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EVALASTIC® Waterproofing Membranes Installation Manual

1. driver even after the paving has been laid G without the need for lifting the slab 36 6 Laying methods and fixing of the roof waterproofing On the base plate at the adjusting wheel of every pad serrations are provided behind the spacer Insert a screwdriver through the open joint into the serration and turn the adjusting wheel clockwise rotation of the adjusting wheel will lower the pad anti clockwise rotation will lift the pad If the paving is to be installed with a lower slope than the roof waterproofing the paving slab supports must be placed on stackable 20 mm high alwitra support plates Note The recommended minimum tilt of the paviours amounts 1 gt Roof gardens Between the roof garden build up and the EVALASTIC waterproofing membranes a protection layer or a membrane combination protection drainage filter layer must be installed j nf N why 3 N TI Z NS EN INN y The load from the garden layers depends yY on the material the thickness and the moisture content of the draining filter and vegetation mat For calculating wind uplift the load of the dry roof is to be taken OC Tol ee a O 2 Please ask your roof garden supplier 37 6 Laying methods and fixing of the roof waterproofing 6 2 2 Loose laying with ballast Protection against wind upl
2. 89 13 Flashing of edge trim profiles and integrated details 13 2 Flashing of alwitra rainwater outlets emergency outlets and vents Flashing of alwitra rainwater emergency outlets Flashing of alwitra rainwater outlets emergency outlets and extension pieces is carried out with a custom fit unbacked EVALASTIC connecting flange The connecting flange is fastened to the drainage element using the corresponding screw ring Therefore check integrity and correct position of the oval gasket below the screw ring and prior to installing the connecting flange apply a thin film of lubricant to the gasket including the adjacent waterproofing surfaces at the flange Then the collar fastened with the screw ring is to be fully welded to the flange of the rainwater outlet emergency outlet or the extension element Subsequently the collar is seal welded along the outer edge to the fixed roof sealing Oa ITAA 3 Position stability of integrated details must be secured 90 13 Flashing of edge trim profiles and integrated details Flashing of alwitra vents For easy and reliable flashing to the roof sealing alwitra vent stacks and alwitra cold roof vents are equipped with a factory fitted EVALASTIC flashing strip The factory fitted connecting flange is to be seal welded along its outer edge to the fixed roof waterproofing After fastening the alwitra refurbis
3. SH 76 Coated metal sheets are not clamping profiles 66 7 Perimeter fastening of the roof waterproofing At parapet valleys and valleys along kerbs coated metal angles sheet 5 x 5 cm are fixed to the parapet or the kerbs The bottom fastening of the coated metal angles can be done directly into the substrate or in case of thermal insulation layers into battens which are sufficiently secured in the substrate Coated metals sheets are to be fastened with non corrosive screws or other suitable fastening elements 7 Fastening of coated metal sheets in with e g spacing cm reinforced concrete e SFS Spike 4 8 x 25 mm 20 e SFS RNR 6 3 x 25 mm 20 solid brick e body bound rivet 4 8 26 mm 20 e screws 4 5 6 mm with dowel 20 lightweight concrete SFS IGF S 8 0 x 65 mm 20 steel sheeth steel blind rivets 4 5 mm 10 solid wood or chipboard wood screws 4 5 x 25 mm 20 A coated metal drip edge should be fastened with two rows of fasteners generally screws and if required secured at the gutter bracket with the bracket clamp Fasteners may show through the welded on tape _Seavar nw avaeaearaT ae awatas AAAA 27 Wire and clout nails as well as so called gas concrete nails are not suitable 67 7 Perimeter fastening of the roof waterproofing The joints of the coated metal sheets must be made in such a way that thermal expansion or contraction stresses arising from therma
4. alwitra DIE DACHMARKE EVALASTIC The homogeneously seam welded EPDM membrane alwitra product system EVALASTIC waterproofing membranes are part of the proven alwitra waterproofing system This system comprises Waterproofing membranes NY Roof edge trim profiles NY incl colour coating AAN N G Wall capping profiles incl colour coating G Wall flashing profiles incl colour coating Colour coating Coated metal sheets Snow guard profile Daylight systems O Rainwater outlets membranes EVALASTIC under http alwitra de en videos english or scan the QR Code alwitra flat roof systems With its flat roof systems EVALON and EVALASTIC alwitra offers two technically and technologically aligned product groups for intelligent roof waterproofing solutions with a worldwide record of experience including all flashings cappings and roof penetrations permanently and reliably resisting any impacts and stresses To complement the core system elements i e the waterproofing membranes the comple mentary system components e roof edge trim profiles incl colour coating e wall capping profiles incl colour coating e wall flashing profiles incl colour coating e daylight systems e rainwater outlets e flat roof vents e paving slab supports e snow guard profiles are matched in form colour function jointing techniques and character
5. direction over the whole membrane width onto the substrate observe airing time Roll out the membrane without buckles and folds along the line out or with an overlap of at least 4 cm to the edge of the adjacent membrane onto the adhesive if necessary cut to length Press on the membrane with a broom and remove any blisters Seal weld the overlapping longitudinal edge and form the butt joint 58 6 Laying methods and fixing of the roof waterproofing gt Folding method Line out the exact position of the row of 4 membranes repeat after 4 5 membranes i Roll out the membrane allow to relax and cut to length lt 12 5 m Note the position of the butt joints i Align the membrane without buckles and folds along the line out or with an overlap of min 4 cm to the edge of the adjacent membrane Fold back half of each membrane along its length i Apply the adhesive over the membrane width and the complete length of the membrane onto the substrate Subsequently fold the membrane halves onto the adhesive press them on with a broom and remove any blisters Seal weld the overlapping longitudinal edge and form the butt joint 3 See also 4 1 Tips for installation 59 6 Laying methods and fixing of the roof waterproofing 6 4 5 Bonding with self adhesive membranes EVALASTIC VGSK EVALASTIC VGSK waterproofing membranes have a gla
6. Cl 2 Alp QO O00A 12 2 Installation of a flashing to roof waterproofing made of different material Roof waterproofing consisting of EVALASTIC waterproofing membranes are compatible with all standard waterproofing materials It is not possible however to ensure permanent waterproof connection to these materials except for some liquid plastics 4 Professional flashings to roof waterproofing which are made of different material can be installed only along high points of the slope arris Roof waterproofing which cannot be con nected so as to be water tight should be raised above the water drainage level by approx 15 cm jointly fastened mechani cally and covered so as to be watertight approx 15 cm 34 Producers of liquid sealants on request 88 13 Flashing of edge trim profiles and integrated details 13 1 Flashing of roof edge trim profiles The flashing of alwitra roof edge trim profiles T plus TW 125 plus TA TA 4F TAG art line 1 and other industrially manufactured edge trim profiles is carried out with unbacked EVALASTIC tapes e g 25 cm or 33 cm wide The tapes are kept in place in the profile along one edge and seal welded to the roof waterproofing at the other edge with an overlap Tapes at roof trim edges which are installed at crescent shaped roof perimeters should be cut to fit the curve
7. projection 0 to 2mm Please note the manufacturer s operating instructions especially the connected loads 230 V 4 600 W 20 A 380 V 5 000 W 15 A 24 5 Welding techniques 5 1 3 Manual hot air welding All hot air guns with an angled nozzle approx 40 mm wide which produce the necessary hot air temperature of approx 430 540 C can be used The hot air gun is to be inserted at an angle of e approx 45 to the membrane edge and e approx 30 to the roof area into the seam overlap Membranes are seal welded in one operation by moving backwards where as small tapes up to 33 cm are first tacked and then seal welded When seal welding the nozzle must be inserted between the membranes in a way that the top membrane edge will also be heated and plastified The plastified lap areas will be fused by applying moderate pressure with a silicone pres sure roller following parallel to the opening of the nozzle Due to the backwards movement the nozzle always blows against already seal welded areas of the seam 7 Please note the manufacturer s operating instructions especially the connected loads e g Leister Type Triac 25 5 Welding techniques 5 2 Welding of T joints T joints must be formed very carefully in order to prevent capillary action T joints must be thoroughly welded with hot air hot air gun only 5 2 1 Butt joints of unbacked membranes Unbacked m
8. 55 6 Laying methods and fixing of the roof waterproofing The bituminous hot melt bonding agent with an installation temperature according to the previous table is poured or brushed onto the substrate The EVALASTIC V waterproofing membranes can be rolled or folded onto the hot melt bonding agent directly or later when the bonding agent is remelted by torching In any case keep the upper side of the membranes and the welding edges clean from bituminous hot melt bonding agent do not lay the membranes against the prevailing wind direction On bituminous felts with a sufficiently thick bitumen coating without sand or grit application or on bitumen beds EVALASTIC V waterproofing membranes can be bonded with melt on method The bitumen coating or bitumen bed is melted with a suitable tool over the whole width of the membrane and the EVALASTIC V waterproofing membrane is rolled onto the melted bitumen and pressed on Correcting the position of a waterproofing membrane after it has been rolled or folded onto the bituminous hot melt bonding agent is not possible After partial bonding the bituminous hot melt bonding agent may show through the waterproofing membrane 56 6 Laying methods and fixing of the roof waterproofing 6 4 3 Suitability of cold bonding adhesives With cold bonding adhesives pay special attention to their suitability for contact with the substrate On substrates which have a top separation layer
9. length paying special attention to the T joints 28 5 Welding techniques A non destructive test along the seam edges can be done by the roofer with an alwitra seam checker 1 At voids the point of the seam checker can penetrate into the overlap Seal weld voids with hot air hot air gun Welded seams on coated metal angles can be tested only by means of a peeling test therefore the sealing has to be cut 1 Other test methods such as vacuum testing are normally not available to the roofer 29 5 Welding techniques 5 4 Leak test 5 4 1 Leak test by flooding Leak testing of the roof waterproofing by flooding is possible After completion of the roof waterproofing incl seam testing and if necessary sealing the roof area is flooded with coloured water e g fluorescein sodium for several days to an average height of at least 10 cm 1 kN m2 All outlets are to be temporarily closed The water level on the roof must be checked every day and there also have to be visual controls carried out inside the building e g also with UV lamps and the results recorded After completion of the flooding test the roof must be drained be careful when opening the outlets inspection samples of the complete build up structure are taken at the lowest points In case of leakages considerable moisture may intrude into the roof build up A leak test by flooding is only possible if the additional load will not ex
10. H H A H H H H H A H H H H H H H H H H f y f N 4 i 9 i i 4 f f H y H H Y H H y 4 Y H H H H Y H H y H Y y H H H Y ee Penetration diameters Penetration diameters 50 mm 80 mm 110 mm 18 mm 26mm 92 13 Flashing of edge trim profiles and integrated details At roof penetrations with a diameter of approx 8 10 mm e g lightning conductor prior to placing the heat shrink sleeve the spacer included with the parts for sleeves heat shrink sleeve 18 mm must be installed between the roof penetration and the preformed detail according to the illustration spacer performed detail s 3s Penetration diameters 8 10 mm 13 4 Flashing of roof penetrations with cut to size sleeve from unbacked EVALASTIC material 1 5 mm thick Homogeneously weld the collar at a width of min 2 cm all around the outer edge to the roof waterproofing install a stainless steel pipe clamp on the sleeve to make it rainproof 93 13 Flashing of edge trim profiles and integrated details 13 5 Flashing of kerbs of alwitra roof lights and natural smoke vents gt gt Kerbs with collar In the case of kerbs with a factory equipped EVALASTIC collar the collar is directly welded to the roof waterproofing after installing the k
11. e solvent containing synthetic adhesive alwitra L 40 rolled onto the complete surface e moisture curing single component PUR adhesive alwitra PUR D poured in lines beads gt gt hot melt bonding adhesives e bituminous hot melt bonding agent 85 25 100 25 or 115 15 brushed onto the complete surface or poured in lines beads elastomeric bitumen hot melt bonding agent brushed onto the complete surface Bituminous hot melt bonding agent can only be used for black EVALASTIC V waterproofing membranes also at lower temperatures On bituminous felts with a sufficiently thick bitu men coating without sand or grit application e g bituminous welding sheet min 4mm thick or on bitumen beds EVALASTIC V waterproofing membranes can be bonded with melt on method Cold bonding adhesives require an installation temperature of at least 5 C Note the instructions especially with regard to e the substrate conditions e the installation temperature e the quantities to be applied in the field perimeter and corner areas 48 6 Laying methods and fixing of the roof waterproofing If the adhesive is applied in lines the roof waterproofing at the perimeter and at openings must be ensured in order to prevent wind uplift Prior to bonding to weathered substrates refurbishment a test bonding has to be carried out to determine the behaviour of the substrate and the required amounts of adhesive When applying adhesives m
12. 2 kg in lines beads approx 50 60 g m per bead Allow for airing of the adhesive for approx 5 10 minutes then before a film can form on the adhesive bead roll or fold the membrane onto the PUR D adhesive beads and press on with a broom The width of the line under the pressed on waterproofing membrane must be gt 4 cm E g with an orchard sprayer 71 Warming in a water bath will increase flowability 53 6 Laying methods and fixing of the roof waterproofing Minimum quantity of alwitra adhesive PUR D g m number of lines m2 centre area Building height inner perimeter area outer perimeter area corner area up to 8 m 200 4 200 4 300 6 over 8 up to 25 m 200 4 300 6 400 8 over 25 m 1 Buildings in wind zone WZ 1 WZ 2 and terrain category II Ill For fast adhesive application up to 8 beads simultaneously with regular spacing the use of PUR adhesive applicators application trolley is recommended The tools must be cleaned e g with acetone before the adhesive has cured After rolling or folding the waterproofing membrane onto the adhesive beads it must be immediately pressed on with a broom You must not correct the position of waterproofing membranes after they are rolled or folded onto the PUR D adhesive beads as this will significantly impair adhesion Adhesive beads may show through the waterproofing membrane PUR D is only suitable for bonding of EVAL
13. EVALASTIC VSKA membranes must be stored in a dark place or covered with tarpaulin Holes in the lower separation foil must be covered Technical data of the coating Base bitumen and solvent free PSA adhesive Installation temperature from 5 C to 40 C Storage dry cool protected against light Shelf life min 12 months EVALASTIC VSKA tapes are produced with a non coated approx 12 cm wide welding edge on both sides tape width 86 cm 66 cm or on one side tape width 43 cm 33 cm Thus a homogeneous welding of the EVALASTIC VSKA tapes to the roof sealing and the coated metal sheet angle is guaranteed 77 10 Waterproofing of parapets The underside coating of the EVALASTIC VSKA tapes in connection with the alwitra primer SK or SK L see chapter 6 4 5 3 adheres to all standard building substrates at the roof perimeter or wall flashing area e g timber concrete bituminous felt brick work zinc and steel sheets aluminium or synthetic materials Depending on the substrate the coating may show at the membrane surface EVALASTIC VSKA tapes can be installed at temperatures over 5 C Substrates must have a stable plain surface they must be dry and free from grease and oil A bonding facilitator of alwitra primer SK or SK Lis to be applied onto the substrate see application instructions in chapter 6 4 5 3 The primer must be completely dry before ap
14. a esieeee ee eener eeaeee eneren E aeee E e E aera Eae 87 88 12 2 Installation of a flashing to roof waterproofing made of different material 00 88 13 Flashing of edge trim profiles and integrated details sccsssccssssccsssescsssessssscssssessseees 89 1SalklashingofroofedgertrimpprofileSicscc c srccccorsccccecstscocrcescreastscecescorececeetersesecenstserceoessrers 89 13 2 Flashing to alwitra rainwater outlets and flat roof vents ce eeeeeeseeseeeeeseeeeeeeeeeeee 90 91 13 3 Flashing of roof penetrations with EVALASTIC sleeves ssccceseceessceessccssseceneeeeseeees 92 93 13 4 Flashing of roof penetrations with cut to size sleeve of tinbackediEVAPAST Geimaterialenl ksi nini hth Gkessneersstuteesssattesesssarcessssatees yeas tessaeereeeyssntr ea 93 13 5 Flashing of kerbs of alwitra roof lights and smoke Vents ssseccceessreceeseseeceeeeseeeees 94 95 13 6 Flashing of arcade rooflights to the roof waterproofing cesseceeseeesrecesseeenseeeneeeesaeers 95 Contents 14 Securing the position of lightning conductor holders cssccsscssscsssssssssccescsssscsseseeeeees 96 15 Forming of EVALASTIC coated metal Sheets ccssccsscssscessccssccsscesscssccsssccsscesscessceseceeseess 97 15T CUINE eecscee cscs scansseseutesenseecacecussestncescsasdshssassdevevsevened scavstescteessscusavesssndsevatsvascsvascpecasssstses 97 A Bendine AEE S a NRT E E CS roc Ere eri reer er ee
15. and e if line fastening with EVALASTIC coated metal sheets is installed in valleys 3 With loose laid tapes slight buckling cannot be excluded 82 11 Flashing to upstands wall flashing EVALASTIC VSKA tapes see chapter 10 4 are fully bonded to the kerb on suitable substrates and at the upper edge continuously pressed on by alwitra wall flashing profiles or other suitable means The joint between the kerb and the wall flashing profile should be waterproofed with a permanently elastic and weatherproof joint sealant using a suitable primer if necessary The installation of corner waterproofing is to be made according to chapter 10 5 11 3 Protection of the tape On used roofs roof gardens terraces carparks the roof waterproofing at the skirting must be protected against mechanical damage also above the gravel layer the pavement or road surface This can be achieved by the easy to install overhang profile forthe alwitra wall flashing profile WA 1 UK or the profile WA 150 A protection layer consisting of building protection mat or similar must be installed between the pavement and the roof water proofing at the kerb 31 E g KRAITEC protect company Kraiburg Salzwedel Germany or Regupol 9510 BSW Bad Berleburg Germany Use of other building protection mats can possibly lead t
16. e g a PE foil or a talcum coating you cannot use cold bonding adhesives Such separation layers may be applied to bitumi nous felt sand on membrane shaped backings or bituminous adhesive layers of thermal insulation boards to avoid sticking of the material on the roll or transport piles Suitability of alwitra cold bonding adhesives on L40 oe concrete lightweight concrete fist render brick work steel sheet aluminium 41 timber based boards 1 bituminous sheets 2 41 bituminous sheets PE foil polyester fleece on the upper side EPS XPS rigid foam board unbacked EPS rigid foam board backed glass fleece EPS rigid foam board backed bituminous sheets 2 PUR PIR rigid foam board unbacked aluminium laminated PUR PIR rigid foam board mineral fleece backing mineral fibre boards unbacked mineral fibre boards bituminised sai mineral fibre boards 1 with anorganic coating i also vertical surfaces contact bonding sanded gritted or with mineral coated bituminous felt on the upper side Legend especially suitable suitable not suitable 22 Contact manufacturer for further information 57 6 Laying methods and fixing of the roof waterproofing 6 4 4 Installation scheme Rolling method Line out the exact position of the row of membranes 4 repeat after 4 5 membranes A Apply the adhesive in sections in the laying
17. joint gap Roof waterproofing made of bonded EVALASTIC waterproofing membranes may also be installed flat over joints moving up to 5 mm At least 0 2 m wide sliding strips must be placed under the waterproofing With loose laid EVALASTIC waterproofing membranes the roof waterproofing can be installed over joints with a expansion of up to 10 mm provided the membranes are supported in the joint area Waterproofing of type Il joints DIN 18531 Depending on the extent and the frequency of joint expansions the type of waterproof ing is to be decided upon individually e g by installing loops of suitable waterproofing materials with EVALASTIC membranes and round profiles for expansions up to 25 mm and a joint width up to 30 mm Waterproofing of expansion joints with loose laid Installing loops of suitable sealing materials with EVALASTIC waterproofing membranes EVALASTIC membranes and round profile 87 12 Waterproofing of expansion joints and connection to other types of roofing Type II joint waterproofing may be raised over the waterproofing level e g by placing wedge shaped insulation elements or with cants Roof areas separated by raised for mations must have independent drainage If expansion joints in the flashing area to kerbs e g annexes are inevitable appropriate constructive measures like in stallation of support plates min 1 5 mm are required
18. on the required amount of fasteners 1 05 m 1 55 m wide membranes and 0 54 m 0 79 m wide tapes are available e For bonded waterproofing membranes EVALASTIC V depending on the application method rolling folding membrane widths of 1 55 m or 1 05 m or EVALASTIC VGSK with a self adhesive coating and a width of 1 05 m on a Suitable substrate can be used 21 5 Welding techniques The overlap of several EVALASTIC waterproofing membranes or with EVALASTIC coated metal sheets is intended to provide a homogeneous connection of materials or welding which is free from extraneous matter The welding is almost entirely independent of the weather conditions The overlapping areas must be dry and free of dirt and debris The contact areas are heated with hot air to a workable condition or evenly wetted with solvent welding agent and fused with moderate pressure If seam edges are welded over with the next mem brane a tape or a preformed detail they have to be chamfered over the whole width of the welding seam to avoid so called capillary effects e g T joints 5 1 Hot air welding The seams have to be seal welded at least 2 cm from the top edge of the membrane min 2cm AOAOK 5 1 1 Conditions Hot air welding is possible without further measures at ambient temperatures of at least 5 C Depending on the weather conditions and the model of hot air welding machines the hot air tempera
19. plates paving slab min 4 cm thick spacers E g KRAITEC protect company Kraiburg Salzwedel Germany or Regupol 9510 BSW Bad Berle burg Germany Disposal of other building protection mats can possibly lead to slight staining and embossing at the surface of the waterproofing membranes Lower values indicated in admission reports for the insulation system inverted roof refer only to the wind uplift protection of the insulation boards 35 6 Laying methods and fixing of the roof waterproofing It is recommended that installation should commence from outlets towards perimeters cutting slabs at the perimeters as required At the perimeters the paving must be permanently secured against lateral movement An adjacent coarse gravel band is not sufficient The paving slab supports are located beneath the cross joint of four slabs A slab is supported on each corner by one pad of the four supports Along the perimeter of a paved area paving slab supports are cut and no spacers installed min 23 cm The paving slabs have to be protected around the circumference against lateral movement Infinitely and individually height adjustable up to 20 mm pads allow for tolerances in the thickness of paving slabs and substrate so that the top surface is smooth and evenly sloped Individual height adjustment both upwards and downwards can be made with a screw
20. ribs they should be insulated above the roof level with non combustible building materials You must not lay the covering over the crown of the firewall It is recommended to loose lay unbacked EVALASTIC tapes of the required width height min 10 cm along the firewall and weld them to mechanically fastened EVALASTIC coated metal sheets 3 The corresponding national regulations apply 85 11 Flashing to upstands wall flashing At non insulated firewalls made of e g lightweight concrete or other non combustible materials self adhesive EVALASTIC VSKA tapes are fully bonded fixed at the top edge against sliding away and made rainproof With mechanical fixing keep the required edge distance in particular with lightweight concrete min 75 mm min 300 min 500 acc to the industrial building guideline 86 12 Waterproofing of expansion joints and connection to other types of roofing 12 1 Waterproofing of expansion joints Waterproofing of type I joints DIN 18531 Over the joint the roof waterproofing can be laid flat in a single ply The waterproofing over the joint must be supported by applying suitable measures like support plates so as to prevent the covering from sinking into the
21. the water flow due to the homogeneous seam welding When installing with the water flow water may ingress under already laid membranes if it rains while waterproofing works are still in progress water flow water flow ee _ laying order__ laying order Se oe Poz SEES gt gt Separation of the roof waterproofing The field sheet is always separated from the waterproofing membrane of parapet and kerb flashings However membranes of the field area are principally raised approx 5 cm on parapets and kerbs Timber or insulation fillets are not required approx 5cm WS Q L BIASI AAAI IAES SAA 17 4 Waterproofing concept for the roof area gt gt Laying direction Generally the EVALASTIC waterproofing membranes can be laid parallel or perpendicular to the roof slope If using mechanical seam fastening of the waterproofing membranes on corrugated steel or timber decks the membranes have to be laid perpendicularly to the span direction of the steel sheets or the boarding span direction timber boarding E fe f 2 z i n v T E a v ae a am a 2 ce E on 2 WY WU ek w z A NAL e 1 o 2 5 A A on E S Gy span direction steel sheets gt Position of butt joints
22. 0 e for one side bonding g m centre area Aare ene Building height inner perimeter area outer perimeter area corner area up to 8 m 300 350 400 over 8 up to 25 m 350 450 500 over 25 m on request Buildings in wind zone WZ 1 WZ 2 and terrain category II III e for contact bonding e g at parapets and kerbs min 450 g m at rough sheet piles min 600 g m2 e alwitra adhesive L 40 is only suitable for bonding of fleece backed EVALASTIC V waterproofing membranes The above mentioned quantities must be increased depending on the substrate conditions especially for rough and absorbent substrates e g gritted bituminous felt Excessive application of adhesive adhesive clusters on polystyrene rigid foam boards coated with a bituminous felt may lead to funnel shaped destruction of the rigid foam Before the membranes are rolled or folded onto the adhesive allow for sufficient airing of the solvent to reduce the amount of volatile solvent trapped under the waterproofing membrane to a minimum High amounts of solvent under the waterproofing membrane may lead to temporary blisters in the membrane which will again disappear with the volatile solvents diffusing out The airing time depends in particular on the ambient temperature and humidity Minimum quantity according to DIN EN 1991 1 4 51 6 Laying methods and fixing of the roof waterproofing The so called finger test is the most practicable me
23. 3 6 Laying methods and fixing of the roof waterproofing Installation scheme Line out the exact position of the row of lt membranes repeat after 4 5 membranes Align the membrane without buckles and folds along the line out or with an overlap of at least 6 cm to the grid pattern of the corresponding adjacent membrane and if necessary cut to length Tear off the separation foil at one end of the membrane approx 100 150 cm fix the membrane end by bonding pull the separation foil to one side from underneath the membrane and atthe same time press on the membrane with a wide broom over the whole width and remove any blisters Seal weld the overlapping longitudinal edge and form the butt joint Tear off the protective foil Pull protective foil to one side and press on removing any blisters 64 7 Perimeter fastening of the roof waterproofing Perimeter fastening which is also called perimeter fixing is a mechanical fastening of the roof waterproofing along its perimeters and in the field area regardless of the type of wind uplift protection of the roof waterproofing application method It is designed to transmit the horizontal forces that may occur in the roof waterproofing into the supporting substructure Perimeter fastenings can be carried out as line fastening or linear fastening 7 1 Requirements According to e g the Regulations for waterproofed roofs peri
24. ASTIC V waterproofing membranes with a fleece backing on sanded gritted or mineral coated bituminous felts Bonding on unbacked rigid polystyrene foam is not permissible PUR D is not suitable for bonding insulation materials Minimum quantity according to DIN EN 1991 1 4 54 6 Laying methods and fixing of the roof waterproofing 6 4 2 3 Bonding with bituminous hot melt bonding agent and by melt on method Technical data Base oxidized bitumen Softening point 15 AE 0 100 C Ti Ace Penetration depth 0 1 mm 25 25 15 Installation temperature 180 C 200 C 210 C Consistency at installation temperature liquid at roof slopes lt 3 2 at roof slopes gt 3 Substrate conditions e stable plain clean free from dust grease and oil free from separating agents e if necessary with a bituminous priming coat Application one side full or partial brushed brushing method or poured application pouring method Minimum quantity of adhesive g m i centre area Building height inner perimeter area outer perimeter area corner area 400 600 400 600 200 400 C 20 C 40 2 upto 2o m 10 1500 2000 1500 2000 100 100 over 25m on request Buildings in wind zone WZ 1 WZ 2 and terrain category II Ill 2 on mineral fibre insulation boards with bituminous adhesive layer Approval of insulation manufacturer required Minimum quantity according to DIN EN 1991 1 4
25. ASTIC V EVALASTIC VGSK on thermal insulation materials with backing or fire retardant layer depending on the approved roof build up directly on bitumnous waterproofings to be refurbished or self adhesive EVALASTIC VGSK bonded directly on unbacked rigid EPS foam boards EVALASTIC V EVALASTIC VGSK on a non combustible upper layer or fire retardant layer depending on the approved roof build up Contents 1 Subject and range of application sscscsssssssssccsssessssessssscscsssesssssssssessscseessssesssesseeees 10 2 Product range 3 Packaging transportation storage and disposal sccccsssccecescsssccseseceseessssesecesseeseeees 12 3 1 Packaging transportation and storage of the waterproofing membranes and theauxiliary materialS c 10 lt cs csvsccasscsvesccesccsssscsessesensesvasssecsesscccessesesacecsnnsevessessustsssees 12 3 2 Disposal of construction site waste and packaging material sscccssecesseeeseeeeneeeesseees 13 4 Waterproofing concept for the roof area ssccssscccesssssssecsesssccsesssssccescsecscesssssseceseseoecees 14 AAApplicationiprinciplesisterstevse cs sedsecuss voz eere Gasucsdescessesersasvsssivevench idsdaatetuscess dovsvansicateteds 14 20 4 2 Selection ofmembrane tapeiwidthiSivec csreccecescteecesccecevceseeccessencecssvsescerssresecesssteceserssrecee 21 Bre WeldinsitechiniQueSiescccccorccssscrececetecceceseacsesccsteccecesesccesccatss
26. At the end of the membrane i e normally after 25 m the backed EVALASTIC V VGSK waterproofing membranes can be butt jointed or hot air welded at an overlap of approx 2 3 cm and covered with an unbacked tape of at least 16 cm width 18 4 Waterproofing concept for the roof area Unbacked membranes however are laid min 16 cm correspondant to the longitudinal edge with an overlap of at least 4 cm at the end of the membrane Double T joints should be avoided Double T joints are avoided by a staggered arrangement of the membrane ends If membrane ends are arranged withoutstagger the end joints are to be covered with an unbacked tape of at least 16 cm width laying order laying order lt lt i T 7 T l l 3 l l l l l nl l l l Pac HJ I l l i i l ir Ji Positioning of membrane ends with offset Positioning of membrane ends without offset In case of low ambient temperatures small ripples may show on the waterproofing membrane after laying especially when warm weather returns Tips for installation Fix the membranes at one end mechanically then heat the membranes slightly during installation and pull it tight 4 Waterproofing concept for the roof area gt gt Formation of expansion joints Waterproofing of type I joints DIN 18531 Over the joint the roof waterproofin
27. The selection of the fasteners type length technologically depends on e the thickness of the build up structure e the material of the supporting substructure profiled steel decking timber deck derived timber product cement or lightweight concrete e the strength of the substrate e the corrosion impact from the build up structure especially in the case of refurbishment The instructions of the fastener manufacturer are to be only tread resistant fastening systems must be used 41 6 Laying methods and fixing of the roof waterproofing 6 3 4 Mechanical fastening in the seam area gt gt Installation scheme Line out the exact position of the row of lt q membranes repeat after 4 5 membranes A Roll out the membrane allow to relax and if necessary cut to length Note the position of the butt joints Align the membrane along the line out or with an overlap of min 10 cm to the edge of the adjacent i At the beginning of the membrane set fasteners or membrane join with a coated metal angle and pull the membrane tight to eliminate any buckles or wrinkles Fix the membrane end with at least 2 fasteners i Set fasteners at the free longitudinal edge of the membrane Observe spacing Seal weld the overlapping longitudinal edge and form the butt joint 7 See also 4 1 Tips for installation 42 6 Laying methods and fixing of the roof waterproofing E
28. ace with a brush or a paint roller 2 The airing time to a great extent depends on the quantity applied the materials and the weather conditions 62 6 Laying methods and fixing of the roof waterproofing Min quantity of primer approx 0 2 L m wet depending on the substrate The applied quantities must be increased for rugged and absorbent substrates The primer must be completely dry before applying the EVALASTIC VSKA membranes Note The alwitra primer SK L dries faster in cool weather The condition of the bonding substrates and the necessity for precoating with alwitra primer SK SK L acc to the table may alter depending on the weather and construction site conditions If necessary a test bonding has to be carried out Substrate Bituminous felt Bituminous felt Bituminous felt Existing bitumen Synthetic membranes Concrete Steel zinc sheets Surface condition PE foil fleece fine sand coating talcum coating grit or fine slate coating weathered dirty weathered slightly moist to dry smoothed and well cleaned free from gravel clusters burrs and sharp edges degreased shortly torch with propane until the surface shows through in dark may be necessary depending on the type of material to be tested in individual cases generally consultations with the alwitra Technical Department are obligatory alwitra primer SK SK L yes yes yes yes no yes yes 6
29. ake sure that seam laps welding area and membrane joints in particular are kept clean from adhesive Fillers or other solvent containing adhesive compositions are not suitable for bonding EVALASTIC membranes 49 6 Laying methods and fixing of the roof waterproofing 6 4 2 1 Bonding with alwitra adhesive L 40 Technical data Base styrene butadiene rubber Consistency vicscous rollable brushable Density approx 1 02 g cm3 Shelf life min 24 months Storage dry and cool protected against direct sunlight Substrate temperature from 5 C to 80 C Ambient temperature from 5 C to 40 C Adhesive temperature min 10 C Open time one side bonding approx 10 to 15 min contact bonding approx 15 to 20 min Substrate conditions stable plain dry clean free from dust grease and oil free from separating agents L 40 is suitable for bonding on many standard substrates such as concrete light weight concrete or sanded gritted or mineral coated bituminous felt Bonding on PUR PIR rigid foam boards with L 40 is not permissible Application Thoroughly stir the adhesive in the container 25 kg or 9 5 kg The adhesive is applied onone side rolled onto the complete surface in a grid pattern one side bonding e on two sides rolled onto the complete surface in a grid pattern contact bonding 50 6 Laying methods and fixing of the roof waterproofing Minimum quantity of alwitra adhesive L 4
30. anges in the colour of the membrane surface cannot be excluded 6 4 1 Preparing the substrate for refurbishment The scope of the work necessary to prepare surfaces for refurbishment depends on the existing layers or plies Existing bitumen covering with compressed gravel ballast Cut open or completely scrape off blisters Remove compressed gravel ballast with appropriate tools and level the substrate Apply a compensation layer e g a bituminous felt Existing bitumen covering under loose gravel ballast Remove gravel ballast and bonded tightly adhered pebbles with appropriate tools e g scabbler or roofing plane If necessary even the substrateby additionally torching the sur face Level any depression e g removal of blisters or folds by applying welding tapes Existing bitumen covering with a sand grit coating Cut open or completely scrape off blisters Level any depression e g removal of blisters or folds by applying welding tapes Existing synthetic membrane roof sealing Prior to bonding to existing synthetic membrane roof waterproofing consult with the alwitra Technical Department is obligatory 1 Analysis of the roof build up provided 47 6 Laying methods and fixing of the roof waterproofing 6 4 2 Adhesives Depending on the installation temperature season as well as on the type and character istics of the substrate the following adhesives are used gt cold bonding adhesives
31. ay impair weldability Fully loaded pallets have a weight of 470 kg to 1 500 kg Temporary storage on roofs should be in rolls and evenly spread over the roof deck on lightweight steel decking only in load bearing areas The auxiliary materials are packed in weather proof synthetic tin containers hobbocks or cans Please note the storage conditions and shelf life warnings on the container labels Materials from open containers can be handled only for a short time See also 4 1 Tips for installation 12 3 Packing transportation storage and disposal 3 2 Disposal of construction site waste and packaging material The EVALASTIC waterproofing membranes have also been designed to avoid waste When installing them there does not have to be unnecessary extra material Construction site waste does not need special monitoring 3 Construction site waste waste materials classification 17 09 04 are matters in the form of mixed residuary building materials This includes waterproofing membranes membrane tapes and old waterproofing membranes the corresponding national regulations apply 13 4 Waterproofing concept for the roof area 4 1 Application principles Roof waterproofing design gt gt non used roof areas According to DIN 18531 waterproofing for non used roofs the minimum nominal thicknesses of synthetic waterproofing membranes are to be designed according to requirements and application cat
32. can be done with approved membrane fasteners min 3 fasteners m set in a row A i 8 g it DRS Ba Sew Sap So Re Generally between the individual fasteners the flashing sheet must also be completely welded in the valley 70 7 Perimeter fastening of the roof waterproofing 7 3 2 Linear perimeter fastening with alwitra kerbs If during installation kerbs of alwitra daylight and smoke and heat vents are directly fastened on the roof waterproofing at waterproofing level and to the edge planks around the opening or to an adequately suitable construction perimeter fastening of the roof sealing is ensured l W W W Vi AW Oe P 71 8 Temporary securing of the edge for interruption of work Edges of roof sealing sections have to be secured against water ingress or wind uplift during work breaks or at the end of the working day until the work is resumed This should be considered when determining the laying order On bituminous substrates vapour control layers existing roof sealings securing of the edge canbe done by bonding e g EVALASTIC VSKA if necessary with alwitra primer SK or SK Ljalong the edge and with ballast e g water proofing membrane rolls on timber battens ont he waterproofing membrane The bonding doe
33. ceed the bearing capacity and the safe deflexion of the supporting substructure 5 4 2 Leak test by measuring Specialized organisations like building diagnostics companies provide leak testing of roof waterproofing using appropriate measuring methods The results of the leak test should be included into the Acceptance Report 30 5 Welding techniques 5 5 Welding of weathered membranes Generally weathered EVALASTIC waterproofing membranes may be fused with new material EVALASTIC on site after years Necessary technological changes closing of roof penetrations flashing of new penetrations to the existing roof waterproofing and repairs of damage resulting from inexpert handling can be carried out with the same material e Where it is to overlap with the new material the weathered surface must be thoroughly cleaned with low surface tension water water with dish washing liquid and dried e Precleaned areas must be wiped with a clean cloth soaked with alwitra membrane cleaner to remove dissolved particulate matter e The overlapping areas must be absolutely dry and free of dirt and debris e Weld the EVALASTIC respectively EVALASTIC R tape with hot air Test welds are obligatory Welding is carried out with hot air hot air gun Weathered unbacked membranes ifthe underneath is clean can also be welded to underlying new material Humidity and moisture trapped under the membranes may impair weldability The
34. ceresesercrcetscsescsecerctcssesscesescereceess 22 SAM OU AINWELGIN Stee vevesevsscoveveocscrsivaccustevstecsyccdeyviccstsuss tats scuustiveveverstssecsuencsdtavpatess tous tase EA 22 Sel GON Cit OMSmeectcsris cee ce coe coraceee ter coven eos eee eens eee Cec p nee Tee Sone CNT See eee 22 5 1 2 Hot air welding with welding Machines oooO 23 24 HalsaManvalihotairweldingvcc ccccsccccsssescscsorccceccsseuccceessresevenncee AEAEE A AAE 25 52 Welding of T jolnMtS ccc cs vasteasseess fecaccers tox EE EREE E EE EEAS EErEE E EERS EELEE EET alee ss aeveus 26 5 2 ABu ttjoints of unbackedi membranes seeeseeeeseeernee reesei eererer eerror reese r eneee errereen eree 26 SPL EMU ON E NEE E ENES o A E E A O E 27 28 SS Same Bcoceccsescevecsversscecavecsseessevacecesesnessvvesovcsavencoresstecseees rvesssetasuvcsvenceseastiasssees 28 29 5 4 Leak test 5 Aclieak test bysfloOdiine naseer e eA sceve sire E AE EARE EE EE voce cavers sasveresecverees 30 5 4 leak test DY MEASUMMBE cc ccsvesseccssvesteeesorencesccarncssoessteecevenntee coven sescetenicesetomiessvessiess 30 SpiweldingonweatherecumembraneSeccssssrceseeressesscerectrssttreremececeseeeteeatenceretercettrereterttersees 31 6 Laying methods and repair of the roof waterproofing e sessssossessssseesoosseoeseosseosesosesoessesesese 32 61Windiloadsattheflat roof esere eearri a AEE e EEE EE EEE E E AR 32 6 2 Waterproofing membranes loose laid with ballast esssssesosserseseosoesessossosessoesers
35. ction against wind uplift 10 3 Edge protection of the roof waterproofing cescecessceessesenceesncecececesecesseceseeesseesaeees 76 1OPiInStallationtwithtEVALASTIGSVS KAttapeSmrecssesess scenester sere see tea sear rete eee 77 78 1OSilnstallationioficonenwaterproolinSeesc cterccccessecscrcescicsstsceceecersceceeceeseserensesecereenerers 79 TOS WEXtermal COMMONS ssuss55ccsecc seeescccsceceees ie rE rRe E E EEEE IE AER ESEE EE Ea ES 79 10 5 2 Internal corners inner top Side Of parapets scesceecessceeeceecceecceaceneeetteeseeneeeaee 79 MOIS SA ntemal COMMONS sss eteesi tose cassccevesssetesscessnesssesserucsscseongtavcsstessesosss iatoucs Ta eA inas 80 11 Flashing to upstands wall flashing cssscsssscssssesssessssscsssessessesesssssssncssesesssscsessneees 81 11 1 Required flashing height of the roof waterproofing sesesssesssssssessserseessenssesseesseesseesseesees 81 W2 ayine Of tapes aaaeeeaa rarere ava dstecevecccs ORE eas Ea Ae AEE AEAEE AEAEE S EESE EA eaS 82 83 A13 Protectioniofithe tape srren oeer ENERE O AAEE AER ESES 83 11 4 Wall flashing with EVALASTIC coated metal Sheet sescccssccceercesseeceseceeeeesteeeeseeens 84 A SiFlashinetofinewalllSiec c cescccccccrscscesesescsccetesscsseueccccccvecsecessrccsecesunccssertccsccevuaseccterieceeeys 85 86 12 Waterproofing of expansion joints and connection to other types of roofing sseseee 87 12 1Waterproofing of expansionijointS ere
36. d metal sheets or single fasteners max vertical interval 50 cm The spacing between the individual fasteners must not exceed 30 cm 15 10 Waterproofing of parapets 10 2 Protection against wind uplift The edge of the roof waterproofing at the parapet must be sealed so as to be windproof With loose laid membranes this is accomplished by mechanically fastened EVALASTIC coated metal sheet angles 8 whereas fully bonded membranes depending on the building height and edge details edge trim capping may be additionally mechanically fastened in line 4 CALLED TEED rE ARE TEE LESSEE TTS T SS TERS he gt AD LLLLLLLL LE LL 10 3 Edge protection of the roof waterproofing Inner edges of the parapet must be shaped in such a way that the roof waterproofing can be applied without damage EVALASTIC V VSKA membranes can be applied directly around cut off edges Non cut off sharp edges can be covered with a mechanically fastened EVALASTIC coated metal sheet angle 28 E g by underlaying a strip of permanently elastic materials especially at uneven substrates 76 10 Waterproofing of parapets 10 4 Installation with VSKA tapes EVALASTIC VSKA tapes are membrane tapes with a polyester fleece backing and a synthetic adhesive compound coating The coating is bitumen free and solvent free and covered with a protective foil when delivered Until installation the
37. described pretreatment particularly the drying is essential for the welding area 31 6 Laying methods and fixing of the roof waterproofing The waterproofing membranes can be fixed against wind uplift by e ballast e mechanical fastening or e bonding Ballast and mechanical fastening also fix build up layers under the waterproofing membrane which can thus be loose laid Bonding of the waterproofing membrane is only possible if the build up layers are stationary and on substrates which are suitable for the corresponding adhesive 6 1 Wind loads at the flat roof The required e mass weight of the ballast e amount of mechanical fasteners or e amount of adhesive for the expected wind loads must be calculated with regard to e the location wind zone height building category e the dimensions of the building e the form slope of the roof and e the substrate wall openings and should be differentiated according to e the centre area e the perimeter area e the corner area of the roof The calculation has to be done as a project related individual calculation according to DIN EN 1991 1 4 or to the corresponding national regulations 32 6 Laying methods and fixing of the roof waterproofing 6 2 Waterproofing membrane loose laid with ballast 6 2 1 Types of ballast and ballast calculation gt gt Gravel consisting of washed round pebbles 16 32 mm with max 15 broken stones can be directly appl
38. ding machine It is recommended to install the tiles with a joint spacing of approx 50 mm On older and soiled roof surfaces the welding areas must be cleaned thoroughly with alwitra membrane cleaner No additional fixing measures required 10 Waterproofing of parapets 10 1 Waterproofing concept for the parapet 74 Selection of membranes For the single ply waterproofing of parapets unbacked EVALASTIC waterproofing membranes ortapes of the required width girth min 10 cm are used For full surface bonding you can also use backed EVALASTIC V waterproofing membranes and self adhesive EVALASTIC VSKA tapes The waterproofing of parapets is always carried out separately from the waterproofing of the centre area The waterproofing of the centre area should be raised approx 5 cm up the parapet Protection against wind uplift The edge of the waterproofing at the top of the parapet must be sufficiently ensured against wind uplift The installation method and direction of the waterproofing membranes are to be determined depending on the characteristics of the building height of the parapet width of parapet top building material if necessary perimeter fastening 10 Waterproofing of parapets e For parapets up to 50 cm height membranes can be loose laid without fixing on the wall For parapets over 50 cm height the membranes must be either fully bonded or secured intermediately with EVALASTIC coate
39. egory Application category K1 standard configuration Roof waterproofing to meet standard requirements fall into application category K1 As a precondition the minimum slope of the surface to be waterproofed must not be less than 2 The following applies for EPDM membranes EVALASTIC Minimum nominal thickness 1 2 mm Thickness without backing and self adhesive layer e g EVALASTIC V with polyester fleece backing Marking according to DIN 18531 2 DE E1 EVA BV K PV 1 2 DE roof waterproofing single ply E1 property class 1 EPDM description of synthetic material BV bitumen compatible K backing PV polyester fleece 1 2 membrane thickness in mm without backing For roofs and or roof areas with a slope lt 2 as regards material selection for the roof waterproofing the design rules for application category K2 apply The corresponding national regulations apply 14 4 Waterproofing concept for the roof area Application category K2 enhanced configuration Roof waterproofing to meet higher demands of designers investors e g due to high grade building usage multi storey buildings difficult to access buildings fall into category K2 A slope of at least 2 at waterproofing level and at least 1 in the valley areas must be observed The following applies for EPDM membranes EVALASTIC Minimum nominal thickness 1 5 mm Thickness without backing and self adhesive layer gt Used roo
40. embranes are laid correspondant to the longitudinal edge with an overlap of at least 4 cm at the end of the membrane The top corner of the membrane must be rounded off Before welding the T joint the respective inner middle membrane end must be chamfered over the whole lap width min 4 cm min 4 cm PE ea po E a To Same oa es imei aaa E o a z E E aay x e z i gi ES s 8 a el El SEE re m LA cease eet a aS This can be done with the hot nozzle of a EX ional off hot air gun if necessary with a metal plate serving as an underlay 26 5 Welding techniques 5 2 2 Butt joints of backed membranes Backed membranes EVALASTIC V VGSK at the end of the membrane are tacked or bonded with hot air with an overlap of approx 2 3 cm and covered with an unbacked tape of at least 16 cm width The length of the tape membrane width approx 5 cm At one end of the tape both corners have to be rounded off Place the tape at the centre of the joint with the rounded off end extending approx 5 cm minem onto the previously laid membrane which e is through at the joint The other side of the tape should end level with the membranes to be joined Tack the strip in this position in the middle with hot air and seal itall around min 4 cm the perimeter laying order The longitudinal seam edge
41. erbs gt gt Kerbs without collar The kerbs have to be sealed to the upper edge e g with self adhesive EVALASTIC VSKA tapes incl necessary forming of corners with cut to size EVALASTIC tapes or preformed corners The flashing sheets are to be welded to the roof waterproofing At the upper edge the flashing must be fixed against sliding away and covered to make it rainproof Sealing of kerb 3020 94 13 Flashing of edge trim profiles and integrated details Flashing of other rooflights and natural smoke vents Other kerbs must be coated up to the dome around the circumference with self adhesive EVALASTIC VSKA tapes bonded fixed on the top edge against sliding away and covered to make them rainproof 13 6 Flashing of arcade rooflights to the roof waterproofing Flashings of arcade rooflights are either car ried out like wall flashings see chapter 11 or unbacked EVALASTIC tapes or self adhe sive EVALASTIC VSKA tapes are integrated into the arcade rooflights structure 36 To be confirmed with the manufacturer of the arcade roof light 95 14 Securing the position of
42. ers e continuous membrane folded and welded e e with EVALASTIC preformed detail 80 11 Flashing to upstands wall flashing Flashings to upstands are carried out after laying the field membranes with e unbacked EVALASTIC tapes e self adhesive EVALASTIC VSKA tapes e bent EVALASTIC coated metal sheets 11 1 Required flashing height of the roof waterproofing The required flashing height above the roof waterproofing or the surface paving of non utility or utility roofs respectively e g gravel layer walkway driveway paving or vegetation is 2 15 cm at a roof slope up to 5 8 8 2 10 cm at a roof slope gt 5 At door areas it is possible to reduce the flashing height to a minimum of 5 cm provided that unimpeded water drainage is ensured 2 The corresponding national regulations apply 81 11 Flashing to upstands wall flashing 11 2 Laying of tapes Flashing sheets with a length of up to 25 m are laid at the required flashing height along the upstand and in the valley to the field area and are welded to the roof waterproofing Vapour barriers are to be raised to the top edge of the tape Unbacked EVALASTIC tapes are loose laid e and continuously pressed on along the top edge by alwitra wall flashing profiles e on raised vapour barriers consisting of synthetic membranes e g PE foils e on kerbs which are not rigidly connected to the supporting substrate
43. es e g bituminous membranes eeeseeeseeeeeeees 61 6 4 5 3 Application instructions for alwitra primer SK and SK L eee eeeeseeeeeeeeee 62 64 7 Perimeter fastening of the roof waterproofing ssccssssccsssescscscsssececescsesessssssscesesesseeees 65 PAREGUITEMENES wecseceshccossccosccoeceizecessvsusvecch vacorecssveccrcs susccsessiaserss Ee a e eea EET P E AEE 66 PD ine fastening eea EAEE EAS AE EES ARRATE E EA 66 7 2 1 Line fastening with EVALASTIC coated metal Sheets scseccseseeesceseesreeseeeeees 66 68 7 2 2 Line fastening with clamping bars Peel StOps cescescceeceeeeeeeceseceseeeeeeeeseeeeeenee 69 73 LING ATA ASTEMIN Sieverecsecsecescsvecscovsseevesectouecsuse suvucevaudocccsvesecsucseccsvec issue EEA EAER EAE ASA 70 7 3 1 Linear perimeter fastening using Single fixings sssessesesssesssesseessesssesseesseessessseeseee 70 7 3 2 Line fastening with alwitra rooflight kerbs eneee eree eee aeret eeaeee eeror eoe 71 8 Temporary securing of the edge for interruption of work ssessssesseseesoesesssneessereossoesoseeesesee 72 Contents 9 Installing maintenance walkways on the roof waterproofing ssccccsscscssesesssscscseessseees 73 10 Waterproofing of parapets lt lt lt ccccccscscsscoovconccsescscscscssconecsssoeccoscascosoesescccsseccessncessccessscocecerests 74 1OWaterproofing concept fonthe parapet seere rreren aerae eeaeee eena reae AAEE 74 75 10 2 Prote
44. essary The cutting clearance should be 0 03 mm to 0 04 mm au ee protective lacquer 97 15 Forming of EVALASTIC coated metal sheets 15 2 Bending EVALASTIC coated metal sheets can be bent on any standard bending machine The bending radius should be 1 2 mm 1 8 mm Attention Ensure that the EVALASTIC coating is in the correct position Coated metal angles for valleys are to be bent with an angle which is approx 10 15 wider than the required angle This will guarantee that the coated metal angles will fit closely to the substrate when fastened SU SULTS Leer SI Se Se ieee ei With coated metal strips the same effect will be reached by reverse bending Ok D 98 99 z alwitra DIE DACHMARKE alwitra GmbH amp Co aE w al J PO Box 3950 D 54229 Trier Germany ne eyn Phone 49 651 9102 0 Fax 49 651 9102 248 export alwitra de www alwitra de f ISO 9001 2008 ISO 14001 2004 ISO 50001 2011 p TUVRheinland ZERTIFIZIERT wwwa tuy com 1D 9108614897 04 2015 Technical changes reserved
45. f areas For used roofs DIN 18195 with high loads e g terraces intensive roof gardens the minimum nominal thickness is 1 5 mm Thickness without backing and self adhesive layer e g EVALASTIC V with polyester fleece backing Marking according to DIN 18195 2 BA EVA BV K PV 1 5 BA waterproofing for foundations EPDM description of synthetic material BV bitumen compatible K backing PV polyester fleece 1 5 membrane thickness in mm without backing 15 4 Waterproofing concept for the roof area gt Seam overlap EVALASTIC waterproofing membranes are marked with several dashed lines along one longitudinal edge These markings can be used as guiding lines for the corresponding lap width and are 12cm e approx 5 cm for bonding and loose laying under ballast min overlap 4 cm e approx 11cm for load distribution plates 40 x 82 mm approx 12 cm for load distribution plates 50 mm For application on unbacked rigid polystyrene foam e g EVALASTIC V loose laid under ballast the lap width should be at least 6 cm If necessary the insulation boards have to be protected from hot air ingress or spilt solvent agent in the membrane lap area to avoid damage to the insulation material 16 4 Waterproofing concept for the roof area gt Laying order Regardless of the type and the laying method of the membranes the seam laps can be arranged both with or against
46. g can be laid flat in a single ply For roof waterproofing with EVALASTIC waterproofing membranes over joints they e can be laid flat in bonded build ups with expansions up to5mm e in case of loose laid EVALASTIC mem branes can be laid over joints up to 10 mm provided the membranes are supported at the joint area Waterproofing of type II joints DIN 18531 Depending on the extent and the frequency of expansion joints the type of sealing is to be decided upon individually e g e by installing loops of EVALASTIC tapes including suitable support profile e g round PE foam cord for expansions up to 25 mm joint width up to 30 mm Type II joint sealing may be raised over the waterproofing level e g by placing wedge shaped insulation elements or cants fillets Parts of the field area separated by elevations have to have independent drainage 20 4 Waterproofing concept for the roof area 4 2 Selection of membrane tape widths The manufacturing of different membrane and tape widths allows for a quick and almost faultless laying regardless of the roof geometry and the laying method see chapter 6 e For loose laid waterproofing membranes EVALASTIC V with ballast membrane widths up to 1 55 m can be used e For loose laid and mechanically seam fastened waterproofing membranes usually EVALASTIC V membranes are used according to the fastening plan Depending
47. hment vent to the supporting construction the ring shaped unbacked EVALASTIC connecting flange which fits the corresponding vent type is seal welded along the inner edge to the foamed in EVALASTIC flashing strip of the alwitra refurbishment vent and along the outer edge to the fixed roof waterproofing musa alwitra vent stack 2 parts alwitra refurbishment vent alwitra cold roof vent 91 13 Flashing of edge trim profiles and integrated details 13 3 Flashing of roof penetrations with EVALASTIC sleeves Flashing of roof penetrations to the roof waterproofing e g cable or lightning conductor inlets safety barriers and other round penetrations is carried out with preformed EVALASTIC sleeves Place the EVALASTIC sleeves on the roof penetration so that the collar will bear on the EVALASTIC waterproofing membrane Then homogeneously weld the collar with hot air at a width of at least 2 cm around the outer edge to the roof waterproofing Put a heat shrink sleeve approx 5 cm on the preformed detail EVALASTIC sleeve and heat it with hot air until it solidly seats adheres to the integrated detail and the preformed detail heat shrink sleeve heat shrink sleeve performed detail performed detail H H A i i i H H H H H H H H H H H H H H H
48. ied as ballast on EVALASTIC V waterproofing membranes without a protection layer For higher percentages of broken stones a protection layer must be installed e g for pneumatic gravel feeding The thickness of the gravel layer must be at least 5 cm ere Ge Se Bees Be n 5cm mi E on SKA oe Se Se oe ee ee ee MMMM The weight of gravel 16 32 is approx 18 kg m 0 18 kN m per 1 cm fill height In perimeter and corner areas as well as on sloped surfaces the gravel layer can be consolidated with a suitable adhesive to prevent whirling up 33 6 Laying methods and fixing of the roof waterproofing gt Concrete slabs hollow grid tiles A loose laid protection layer e g rot proof fleece building protection mat The compati bility of materials needs to be considered or similar must be placed between the roof sealing and the concrete slabs or hollow grid tiles Concrete slabs laid closely together e g 100 x 25 x5 cm have a weight of approx 22 24 kg m 0 22 0 24 kN m per 1 cm thickness and hollow grid tiles 60 x 40 x 8 10 cm filled with gravel 16 32 mm a weight of approx 20 kg m 0 2 kN m per 1 cm thickness The longer edge of rectangular slabs must be laid parallel to the roof edge gt gt Inverted roof The thermal insulation made of extruded polystyrene boards with a rebated edge is laid ina single layer directly onto the EVALASTIC waterp
49. ift with ballast is permissible only if the bearing capacity of the roof construction and if necessary the maximum deflexion for these loads have been proven Installation scheme Line out the exact position of the row of membranes 4 repeat after 4 5 membranes A Roll out the membrane allow to relax and if necessary cut to length Note the position of the butt joints Align the membrane without buckles and wrinkles along the line out or with an overlap of approx 4 or 6 cm to the edge of the adjacent membrane Seal weld the overlapping parallel edge and form the butt joint The ballast including protective layer must be applied immediately after laying the water proofing membranes seam testing if necessary in sections Also for noise control 38 6 Laying methods and fixing of the roof waterproofing 6 3 Waterproofing membranes loose laid and mechanically fastened 6 3 1 Fastening methods and determination of the required quantity of fasteners Loose laid EVALASTIC V waterproofing membranes can be secured against wind uplift linear in the seam overlaps by mechanical fastening with any approved fastener The fastening method as well as the required quantity of fasteners has to be indicated in the specification The required quantity of fasteners will be determined in a project related individual calculation In case of refurbishment an individual calcu
50. istics All flat roof system products can be installed safely and quickly they provide maximum creative freedom and are particularly economic due to their durability alwitra installation tool set alwitra 2 consisting of silicone roller brass roller seam checker membrane scissors membrane cutter brush bottle for solvent welding agent flat brush squeeze bottle for EVALON liquid folding ruler ballpen installation manual protective gloves service bag Fields of application Flat roofs non ventilated roofs warm deck roofs ventilated two layer roofs cold deck roofs inverted roofs DUO roofs te a NTN WATERPROOFING MEMBRANES loose laid with ballast gravel roof gardens concrete paving slabs EVALASTIC V depending on the purpose and the conditions especially unevenness of the substrate EVALASTIC V depending on the conditions especially unevenness of the substrate EVALASTIC V depending on the conditions especially unevenness of the substrate Installation method WATERPROOFING MEMBRANES mechanically fastened in seam overlap EVALASTIC V depending on the building material class of the insulation material and on the approved roof build up EVALASTIC V depending on the building material class of the upper layer and on the approved roof build up WATERPROOFING MEMBRANES bonded with cold or hot melt adhesives EVAL
51. lap on both sides Tape widths cm Standard length m Specified lenghts Standard colours Special colours Accessories EVALASTIC tape widths cm unbacked EVALASTIC preformed details internal external corners flange lightning conductor and cable penetrations EVALASTIC coated metal sheets sheets 1mx2m Adhesives alwitra L 40 alwitra PUR D alwitra membrane cleaner EVALASTIC VSKA tapes self adhesive cm with welding lap on one side with welding lap on both sides alwitra primer SK alwitra primer SK L 1 For alwitra flat roof rainwater outlets and vents 2 Primer for EVALASTIC VSKA tapes self adhesive coating TONENS 25 1 05 1 55 1 05 1 09 1 59 54 79 25 on request light grey on request 16202533506675 105155 light grey 5 5 33 43 66 86 e2 e23 e2 e23 3 Primer for various substrates e g bituminous membranes 3 Packing transportation storage and disposal 3 1 Packaging transportation and storage of the waterproofing membranes and the auxiliary materials At the factory the waterproofing membrane rolls are individually wrapped and laid horizontally on pallets of up to 15 units for transportation After long term storage small buckles may show at the roof membrane after laying The membrane rolls must be stored horizontally on a dry and clear area They must be stored in a sheltered area or covered with tarpaulin Moisture on the membranes m
52. lation should be done if necessary based on pullout tests by the fastener manufacturer On non ventilated roofs fastening of the water proofing membrane at the same time as fastening the thermal insulation If the insulation boards are not sufficiently secured this way min 2 fasteners m2 they must be additionally fixed prior to installing the waterproofing membrane 3 On request as a service of the fastener manufacturer 39 6 Laying methods and fixing of the roof waterproofing 6 3 2 Fastening plan If required project related individual calculations will be produced including installation instructions material requirements and fastening plan The fastening plan contains e the dimensions of the field perimeter and corner areas as well as e the required quantity of fastening elements per roof area With mechanical seam fastening the membrane width s the chord width top chord spacing of the metal sheets and the position of movement joints and large roof penetra tions arcade and single rooflights natural smoke vents are taken into consideration In order to draw up an individual calculation and a fastening plan a Data Sheet confirmed by the roofing contractor will be necessary 6 By the individual calculation of the respective manufacturer 40 6 Laying methods and fixing of the roof waterproofing 6 3 3 Fasteners Prior to any application fastening systems must be tested and certified
53. lightning conductor holders EVALASTIC waterproofing membranes have a very smooth surface so that holders must be secured against sliding away or shifting e onroof slopes of approx 5 and more or e ifthe membranes are loose laid and mechanically fastened The following methods for securing are available e EVALASTIC tapes with rounded off corners arranged in direction of the slope which are conducted through the holder and welded at their ends to the roof waterproofing with an overlap On mechanically fastened waterproofing membranes the lightning conductor holders are positioned directly next to the membrane fasteners 37 E g type KF from DEHN SOHNE in 92306 Neumarkt Opf Germany 96 15 Forming of EVALASTIC coated metal sheets EVALASTIC coated metal sheets e steel sheets 0 6 mm thick galvanised e coated with a light grey protective lacquer 10 um thick on the back side e laminated on the top side with 0 6 mm EVALASTIC e sheets 1mx2m e overall thickness 1 2 mm Coated metal sheets are packed in the factory and transported on pallets They must be stored horizontally on a dry and plain area The forming cutting bending of coated metal sheets should be done at room temperature approx 18 C 15 1 Cutting The coated metal sheets should be cut with sharp tools with the protective lacquer _ 0 03 0 04 mm coating up This makes a deburring of the sheets unnec
54. lly induced changes are absorbed without causing damage In order to prevent welding in the joint area all joints prior to the welding on of the tape which must have a width of at least 16 cm will be covered with adhesive tape with a width of at least 2 cm e g crepe tape 68 7 Perimeter fastening of the roof waterproofing 7 2 2 Line fastening with clamping bars Peel Stops If line fastening with rigid clamping bars the bars must be waterproofed using an unbacked tape Fasten the clamping bars with at least 5 suitable fastening elements per metre onto the substrate or an auxiliary supporting substructure At roof perimeters with alwitra edge trim profiles T plus TW 125 plus TA TA 4F TAG art line 1 the protection of the roof sealing against wind uplift is achieved by line fastening using the mechanically fastened supporting flange or the fillet plate of the roof edge trim IIL Mt ee ee Se ee ee SS Se Se Se Se Oe OS Oe OS OS oe l SavaratavaTaravavatacan 69 7 Perimeter fastening of the roof waterproofing 7 3 Linear fastening 7 3 1 Linear perimeter fastening using single fixings The perimeter fastening can also be carried out by using single fixings in a row linear fastening Z The perimeter fastening of EVALASTIC waterproofing membranes
55. loads up to 2 5 kN m W___ according to DIN 1991 1 4 res 60 6 Laying methods and fixing of the roof waterproofing 6 4 5 2 Bonding on other substrates e g bituminous sheets The underside coating of the EVALASTIC VGSK membranes adheres in connection with alwitra primer SK or SK L up to rated wind loads of 3 5 kN m to various standard substrates e g bituminous felt concrete zinc and steel sheets aluminium and synthetic materials 61 6 Laying methods and fixing of the roof waterproofing 6 4 5 3 Application instructions for alwitra primer SK and SK L alwitra primer SK Technical data Base Consistency Colour Installation temperature Airing time Storage Shelf life alwitra primer SK L Technical data Base Consistency Colour Installation temperature Airing time Storage Shelf life solvent free emulsion bitumen free liquid rollable brushable blue min 5 C approx 30 min after that the roof area can be walked on dry cool frost protected min 12 months SBS rubber solvent containing liquid rollable brushable red min 5 C approx 15 min after that the roof area can be walked on dry cool frost protected min 12 months Substrate conditions stable plain clean free from dust grease and oil free from separating agents Application Thoroughly stir the alwitra primer SK SK Lin the container 25 L 10 L Apply evenly to the complete surf
56. meter fastening is necessary for e loose laid single ply coverings e profiled steel decks and e roof build ups with light surface protection and rigid foam thermal insulation bonded with cold bonding adhesives with after tacking effect Perimeter fastening is generally recommended especially in cases of drainage to bracket mounted gutters on outer walls Perimeter fastenings must be installed e at roof perimeters e at flashings of kerbs with an edge length over 25 cm e at structural expansion joints e at roof penetrations for single and arcade rooflights as well as e atvalleys ifthe sum of the roof slopes is higher than 5 3 Regulations for Flat Roofs section 2 6 1 national regulations 65 7 Perimeter fastening of the roof waterproofing 7 2 Line fastening 7 2 1 Line fastening with EVALASTIC coated metal sheets Line fastening of backed EVALASTIC waterproofing membranes is primarily carried out with EVALASTIC coated metal sheets To do this the edge of the membrane must be welded constantly to a mechanically fixed coated metal angle steel edge of the roof waterproofing to ensure a non positive connection For backed waterproofing membranes EVALASTIC V VGSK the non positive connection is achieved by using an unbacked EVALASTIC tape which is welded to both the waterproofing membrane and at least the horizontal flange of the coated metal angle up to the valley line
57. o slight staining and embossing at the surface of the waterproofing membranes 83 11 Flashing to upstands wall flashing 11 4 Wall flashing with EVALASTIC coated metal sheet Flashings to upstands can be carried out at low cost using mechanically fastened EVALASTIC coated metal sheets approx 20 cm girth 2 bends if line fastening is required in the valley see chapter 7 1 Also at door areas the flashing can be carried out best with coated metal sheets The connections at the joints and the fixings at the upstand must be watertight allowing the sheets to expand and contract without damage The fixings with a spacing of e lt 20 cm at the upstand must be either self sealing or must be covered with a seal weld EVALASTIC tape i J m4 The joint between the upstand and the coated metal sheet should be sealed with a perma nently elastic and weatherproof joint sealant using a suitable primer if necessary To do this the sheets must be bent at the top edge with a side of at least 10 mm width aes 32 E g self sealing stainless steel screw washer assemblies plumber screws 84 11 Flashing to upstands wall flashing 11 5 Flashing to firewalls 2 Walls for the separation or segregation of fire sectors firewalls must consist of non combustible building materials class A In order to avoid thermal bridges cooling
58. ossossesosse 33 C ypes Of ballast ad balla CaO E E rsa 33 37 622 Looseilayine with DallaSt cwecccssesesscecesscosseccisecestretscccessccnccceusscesur ceetecnecoeessveracetecees 38 Contents 6 3 Waterproofing membranes loose laid and mechanically fastened cesseceeseeesreeeeneees 39 6 3 1 Fastening methods and calculation of the required quantity of fasteners 66 39 6 32 Fastening Pla N sereoo ieee e EEE OEE ER EN E A A R E 40 6 3 3 Fasteners 6 3 4 Mechanical fastening in the seam area sssesssesssssseessesseerseesseessessseeseesseesseeseeee 42 45 6 4 EVALASTIC waterproofing membranes Oe 46 6 4 1 Preparing the substrate for refUrbiShMent m e e 47 GEA DIADNOSIVGS assessoires asee aeae eae s E E S EEEE EES EE ER EEEE EERE 48 49 6 4 2 1 Bonding with alwitra adhesive L40 eeer eenn eerorr erener aeee 50 52 642 P Rondina Wi a MV ma aeS Ve PUR E eer 53 54 6 4 2 3 Bonding with bituminous hot melt bonding agent and by melt onimethOdss ccsscccsssoresccesseceesecernesencecscctesorsserccesesvecesessesessuse 55 56 E SUM Von Mayol Golo en WCINSSINVES coscecdacscccococssooccuoscconcoosNocccecccacocosoncacoNEeI 5000000000 57 Grae alnstallatlonesGlicnl e e A A A ater menae ter 58 59 6 4 5 Bonding with self adhesive membranes EVALASTIC VGSK eseeccesceeeeeeeeeeeeeneens 60 6 4 5 1 Bonding on unbacked EPS rigid foam boards eeseceeseeceseeesseeeesneeeseeeseee 60 6 4 5 2 Bonding to other substrat
59. plying the EVALASTIC VSKA tapes Test bonding is obligatory Place the EVALASTIC VSKA tapes in the correct position Make sure that the non coated welding edge is aligned so as to be homogeneously welded to the roof waterproofing after applying the tape Remove the lower protective foil Slightly press on the tape to remove any blisters Then press on thoroughly to ensure reliable adhesive bonding Cross joints must be welded over with an unbacked tape Appropriate measures must be taken to make the upper end of the EVALASTIC VSKA tapes rainproof 2o bt bhi bhi itt y bonded rex 3 continuously E o Q AN welded Ne 78 10 Waterproofing of parapets 10 5 Installation of corner waterproofing The membranes must be laid so as to have as little covering layers lying on top of each other as possible at the parapet corners Membranes laid parallel to the parapet are butt together at the corner areas or laid around corners The lap width at the butt joint should be approx 10 cm If corners are formed with EVALASTIC preformed details they are to be welded with hand held hot air guns 10 5 1 External corners parapet upstand valley area e with EVALASTIC preformed detail 10 5 2 Internal corner inner top side of the parapet e with EVALASTIC performed detail A Dw 79 10 Waterproofing of parapets 10 5 3 Internal corn
60. rc E 98 1 Subject and range of application This installation manual contains basic rules and serves as a guideline for roof waterproofing with EVALASTIC waterproofing membranes for new building and refurbishment They are the manufacturer s instructions and guidelines for roofers and construction site managers They are the result of decades of practical experience in the laying of alwitra waterproofing membranes on millions of square metres of roof areas Adherence to the relevant technical rules as published in standards and regulations as well as to the workers protection and safety regulations is obligatory The handling instructions and notes on container labels and safety data sheets for alwitra adhesives and auxiliary materials are to be observed Drawings included in these instructions are not true to scale and are schematic As of March 2015 Technical changes reserved 1 This manual replaces all former alwitra installation manuals for EVALASTIC waterproofing membranes 10 2 Product range EVALASTIC waterproofing membranes are high quality synthetic membranes which come in 2 different types complete with preformed details coated metal sheets and auxiliary materials EVALASTIC VGSK with glass EVALASTIC V with polyester fleece backing polyester fleece backing and effective thickness of waterproofing layer mm Membrane widths m with welding lap on one side with welding
61. roofing is only recommended if loose laying with ballast or mechanical fastening is not possible Bonding of the roof waterproofing is only possible provided that all underlying functional layers are permanently stationary Testing before refurbishment For bonding use fleece backed waterproofing membranes EVALASTIC V or EVALASTIC VGSK with a self adhesive coating The laying of EVALASTIC V waterproofing membranes is done either by rolling or folding after applying the adhesive onto the substrate generally bituminous felt After removal of the separation foil EVALASTIC VGSK is laid as described in chapter 6 4 5 The limited mobility of the roof waterproofing resulting from the bonding makes it necessary to be especially careful when forming dilatation joints flashings and cappings Dilatation stresses deriving from the roof and the layer build up must be absorbed without causing any damage Overlaps of membrane type backings at not bonded the joints of thermal insulation layers must not be bonded 18 In flashing areas EVALASTIC VSKA waterproofing membranes can be bonded to suitable substrates 46 6 Laying methods and fixing of the roof waterproofing Prior to expansion the roof waterproofing non specially designed movement joints with a width of up to 5 mm are to be covered with a tape sliding strip with a width of 25 cm fastened at one side After bonding subsequent ch
62. roofing membranes without a separation layer Between the thermal insulation boards and the ballast a filter layer made of synthetic fleece min 140 g m2 or a draining fleece layer must be placed The required thickness of the ballast with loose laid waterproofing membranes is calculated for wind loads according to the Guidelines for flat roofs Appendix I or in an individual calculation If gravel is used as ballast the gravel layer must have a thickness of at least 5 cm Z a C wenn ASSN AIS i o T a 2 TEEN Concrete slabs hollow grid tiles Inverted roof 34 Paving flags can be installed on alwitra paving slab supports in an underlayer of gravel or chalk free grit or in a bed of mortar on a draining layer Between the paving slab supports or the gravel or grit underlayer and the EVALASTIC waterproofing membranes a protection layer of building protection mat or similar should be installed Screed or mortar layers are to be separated from the roof sealing with a double ply PE membrane as sliding layer Laying accessible paviours onto alwitra paving slab supports secured against reverse rotation and over tightening is simple and largely unaffected by weather conditions Once the waterproofing is completed the following is applied one after the other protection layer paving slab supports if necessary with support
63. s not need to be removed when resuming the work and may serve as an insulation of individual roof areas On substrates such as vapour barriers consisting of foils on which bonding is not permis sible the temporary securing of the edge can be done with a folded back membrane tape and additional ballast pat 72 9 Installing maintenance walkways on the roof waterproofing EVALASTIC waterproofing membranes have a smooth surface to ensure fast drainage of rainwater and washing away of pollutants If maintenance walkways are necessary on non used roofs without ballast they can be carried out by installing EVALASTIC mainte nance walkway tiles 800 x 600 x9 mm The textured surface provides a strong grip even on sloped and wet areas Moreover the maintenance walkway tiles also provide for load distribution Shifting of the maintenance walkway tiles even with increased wind loads is prevented by hot air welding the tiles to the EVALASTIC waterproofing membranes Product design dimensions Colour dark grey slight differences in colour possible Surface textured Underside even Length x width approx 800 x 600 mm Overall thickness approx 9 mm Texture height 4mm Weight approx 8 kg m or approx 3 7 kg tile Application The maintenance walkway tiles are welded to clean and dry roof areas covered with fleece backed EVALASTIC waterproofing membranes by hot air only e g hot air wel
64. s of the mem l branes to be joined which are under the min 16 cm rounded off end of the tape must be cham 8 ll ca eae fered at a width of approx 5 cm or 10 cm ous Ee each As must the longitudinal seam edges at the other end of the tape itself at the width of the lap After chamfering the strip will be seal welded at its longitudinal edges and at the rounded off end Be especially careful when welding the chamfered areas with hot air 8 Advantageous at low temperatures 16 cm tape width for mechanically fastened waterproofing membranes e g if fasteners are placed at the butt joint 27 5 Welding techniques The welding edge of the following membrane overlaps another longitudinal edge of the joined membranes and the tape in the chamfered area by at least 4 cm Again be especially careful when welding the chamfered areas with hot air F z le a amp 4 g chamfered areas E ll mmmn 5 3 Seam checking After the seam has cooled down to the ambient temperature the sealing layer from the seam edge min 2 cm must be cohesive without any foreign matter over the complete welding width and the seam has to be permanently waterproof and highly resistant The performance of the roof sealing depends to a great extent on the quality of the seam In order to detect possible voids the welding seams must be tested over the complete
65. specially in corner areas fasteners may be necessary outside the seam overlap for example in the middle of the membrane The fasteners outside the overlap area are covered by seal welding either in a row with unbacked tapes 16 cm wide or individually with round unbacked details 43 6 Laying methods and fixing of the roof waterproofing gt Position of the fasteners Load distribution plates must be installed at least 1 cm from the edge of the backing rectangular load distribution plates with the longer edge being parallel to the membrane edge 11cm F H E 7 min fastener min Ss I 1cm width 1cm KEA ce F I tl Retest ee al if Glin vial o i io I it an x I 5 7 I l er z Baa a SSS SSS SS The fasteners must be driven in only so far as to permanently prevent rotation of the load distribution plates and to ensure that the latter press the waterproofing membranes against the substrate without wrinkles 44 6 Laying methods and fixing of the roof waterproofing gt Use of setting tools For an efficient and highly safe fastening in an ergonomical working position setting tools may be used Use only setting tools with a bit stop or a dynamometric clutch 45 6 Laying methods and fixing of the roof waterproofing 6 4 EVALASTIC waterproofing membranes bonded Bonding of the roof waterp
66. ss polyester fleece backing and a synthetic adhesive compound coating They are 25 m long and are produced with an approx 5 cm wide unbacked welding edge on one side The self adhesive layer is bitumen and solvent free and covered with a protective foil when delivered Until installation the EVALASTIC VGSK membranes must be stored in a dark place or covered with tarpaulin Holes in the lower separation foil must be covered to preserve the high adhesiveness of the self adhesive layer Technical data of the self adhesive layer Base PSA adhesive bitumen free solvent free Installation temperature from 5 C bis 40 C Storage In a dry cool and dark place Shelf life min 12 months The EVALASTIC VGSK membranes are not suitable for the waterproofing of flashings or roof penetrations Perimeter fastening see chapter 7 is obligatory 6 4 5 1 Bonding on unbacked EPS rigid foam boards EVALASTIC VGSK membranes can be directly bonded to stable unbacked polystyrene EPS rigid foam boards The substrate must be clean dry and free from dust The membranes are bonded directly to the thermal insulation without any primer The lap width should be at least 6 cm the self adhesive layer will adhere to the overlapped membrane at a width of approx 1cm in the rear area to avoid damage to the insulation material by hot air ingress EVALASTIC VGSK membranes can be applied as described above without any additional precautions at rated wind
67. thod for determining the right moment If the finger test produces adhesive threads bonding is still possible After rolling or folding the waterproofing membrane onto the adhesive it must be immediately pressed on tightly with a broom The position of the waterproofing mem brane can be adjusted immediately after it has been rolled or folded onto the adhesive alwitra L 40 without impairing the adhesion Again press on tightly Always check the adhesiveness The equipment is cleaned with alwitra cleaner L 40 this must also be done before longer work breaks 52 6 Laying methods and fixing of the roof waterproofing 6 4 2 2 Bonding with alwitra adhesive PUR D Technical data Base 1 component polyurethane prepolymer moisture curing Consistency liquid pourable Density approx 1 10 g cm Shelf life min 12 months Storage dry and cool protected against direct sunlight Substrate temperature from 5 C to 60 C Ambient temperature from 5 C to 40 C Adhesive temperature min 10 C Open time approx 20 min Substrate conditions stable plain clean free from dust grease and oil free from separating agents slightly moist to dry If the substrate is dry air humidity is low and temperatures are high moisten the substrate by spraying water fog max 15 g m 2 2 Sanded gritted or mineral coated bituminous felt Application one side bonding poured directly out of the container 5 5 kg
68. ture should be approx 430 540 C By preheating the seam areas welding is also possible at lower ambient temperatures Test welds are obligatory 22 5 Welding techniques 5 1 2 Hot air welding with welding machines For the hot air welding of EVALASTIC waterproofing membranes all approved self propelled hot air welding machines for synthetic membranes can be used With hot air welding machines 1 7 m to 3 5 m of seam per minute can be welded The seams are welded in one operation gt For further information please contact alwitra 23 5 Welding techniques Depending on o e the ambient temperature and possible wind e the temperature of the substrate and e the temperature of the waterproofing membranes at the machine e the speed ON OFF e ifnecessary the volume of air and e the hot air temperature have to be adjusted to ensure an even and homogeneous fusing in the weld Test welds are obligatory For welding machines without crawler drive and depending on the weather conditions and the roof slope a welding aid may be necessary to ensure a weld seam without wrinkles The alwitra welding aid made of non welding elastomeric material 150 mm wide and approx 25 m long is loosely placed onto the membrane immediately infront of the welding machine level with the upper edge and is removed after welding for further use pressure roller welding aid

EVALASTIC® Waterproofing Membranes Installation Manual

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EVALASTIC&reg; Waterproofing Membranes Installation Manual

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EVALASTIC® Waterproofing Membranes Installation Manual