Sikalastic®-644 Lo-VOC Waterproofing System...create a seamless membrane and flashing system....

SYSTEM DATA SHEETSikalastic®-644 Lo-VOC Waterproofing Sys-temLIQUID APPLIED ALKALINE-RESISTANT LOW-ODOR SINGLE COMPONENT SATURATING RESIN WITHFIBERGLASS OR POLYESTER REINFORCEMENT

PRODUCT DESCRIPTIONSikalastic®-644 Lo-VOC Waterproofing System combine acold applied, low-odor, aliphatic, single component, al-kali resistant, moisture-triggered polyurethane resinwith fiberglass mat or polyester fleece reinforcement tocreate a seamless membrane and flashing system. Typic-al applications include a separate wearing course (over-layment or overburden), but Sikalastic®-644-Lo-VOC isUV resistant without protection board and is thereforesuitable for direct exposure waterproofing applicationsas well. System components are:System components are:Sika® or Sikalastic® Primer: Select primer per substratematerial in accordance with Priming GuideSikalastic®-644 Lo-VOC: Resin used for all systems withboth Sika Reemat and Sika Fleece reinforcementSikalastic® Reemat Premium: Chopped strand fiberglassmatSika® Fleece 120, 140, 170: Non-woven, needle-punchedpolyester fleece in various weights

USESSikalastic®-644 Lo-VOC Waterproofing System may onlybe used by experienced professionals.

Sikalastic® waterproofing systems, including Sikalastic®Plaza Deck/PMA and Vegetated systems for both newconstruction and refurbishment

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Split-slab waterproofing▪Vegetated deck waterproofing▪Plaza decks with concrete pavers, and asphalt or con-crete paving stones in a sand bed

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Waterproofing under tile in a mortar bed▪

Applications involving cementitious and asphalt pave-ment overlays

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Waterproofing around/beneath mechanical equipment▪

CHARACTERISTICS / ADVANTAGESProven technology with over 30 year track record▪Single component - no mixing and ready to use▪Alkaline resistant - suitable for under tile applications▪Fully reinforced with highly conformable Sika Reemator Sika® Fleece

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Moisture triggered chemistry that is rapidly weather-proof after application

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Low VOC formula - low Odor▪Highly elastic and crack bridging▪Seamless and fully adhered▪Vapor permeable▪UV resistant and non-yellowing▪Abrasion and chemical resistant▪Adheres to most common construction materials whensuitable primer is used

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System Data SheetSikalastic®-644 Lo-VOC Waterproofing SystemAugust 2018, Version 01.03020915909000000014

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SYSTEM INFORMATIONSystem Structure Sikalastic® RoofPro-644 Lo-VOC System Guide

with Sika® Reemat Premium

RoofPro 15* RoofPro 20* RoofPro 25*1. Primer See Priming

GuideSee PrimingGuide

See PrimingGuide

2. Base Layer:Sikalastic®-644-Lo-VOC

45 mils wet35 sf/gal.



3. Reinforcement: Sika® ReematPremium

Sika® ReematPremium

Sika® ReematPremium

4. Top Layer:Sikalastic®-644-Lo-VOC





- - 25 mils wet64 sf/gal.

Sikalastic® RoofPro-644 Lo-VOC System Guide withSika® Fleece

RoofPro 15* RoofPro 20* RoofPro 25*

1. Primer See PrimingGuide

See PrimingGuide

See PrimingGuide

2. Base Layer:Sikalastic®-644-Lo-VOC




3. Reinforcement: Sika® Fleece120 (US)

Sika® Fleece140 (US)

Sika® Fleece170 (US)





* Substrates: Concrete or cementious, metals, woods, single-ply or bituminous, stone. Primer required (seeSubstrate Priming Guide). Detailing: Sika® Flexitape Heavy centered over seams, transitions and properlytreated cracks and joints. Note: Coverage rates provided are optimal and are not guaranteed - cover-age rates will vary depending on temperature, surface roughness and poros-ity, aggregate selection and embedment, and application technique.

Chemical base Single component, moisture-triggered, aliphatic polyurethane


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Colour White, Pearl Gray; custom colors available with minimum order quantitiy

Dry film thickness Sikalastic® RoofPro-644 Lo-VOC System Guide with Sika® ReematRoofPro 15 RoofPro 20 RoofPro 2556 mils dry 60 mils dry 76 mils dry

Sikalastic® RoofPro-644 Lo-VOC System Guide with Sika® FleeceRoofPro 15 RoofPro 20 RoofPro 2556 mils dry 60 mils dry 76 mils dry

TECHNICAL INFORMATIONTensile Strength Sikalastic® RoofPro 20 with

Sika® Reemat PremiumSikalastic® RoofPro 20 withSika® Fleece 140

1030 psi 900 psi

(ASTM D-751 Proc. B)

Note: Data for other RoofPro assemblies available upon request

Elongation at Break Sikalastic® RoofPro 20 withSika® Reemat Premium

Sikalastic® RoofPro 20 withSika® Fleece 140

21 % 82 %

(ASTM D-751)


Tear Strength Sikalastic® RoofPro 20 withSika® Reemat Premium


300 lbf/in 200 lbf/in

(ASTM D-624)


Resistance to Static Puncture Sikalastic® RoofPro 20 withSika® Reemat Premium


>55 lbf >55 lbf

(ASTM D-5602)


Chemical Resistance Strong resistance to a wide range of reagents, including paraffin, petrol, fueloil, white spirit, acid rain, detergents and moderate solutions of acids and al-kalis. Some low molecular weight alcohols can soften the material. ContactTechnical Service for specific recomendations. - Salt spray to ASTM B117(1000 hours continuous exposure) and prohesion testing to ASTM G85-94: An-nex A5 (1000 hours cyclic exposure)

Service Temperature -22–176 °F (-30–80 °C) intermittent

APPLICATION INFORMATIONAmbient Air Temperature 41 °F (5 °C) min. / 95 °F (35 °C) max

Relative Air Humidity 80 % R.H. max.

Substrate Temperature 41 °F (5 °C) min. / 140°F (60°C) max.

Dew Point Beware of condensation.The substrate and uncured coating must be ≥ 5 °F (3 °C) above dew point.

Substrate Moisture Content ≤ 4 % moisture content Test method: Sika®-Tramex meterNo rising moisture according to ASTM (Polyethylene-sheet)


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Substrate Pre-Treatment Refer to Priming Guide to select primer for properly evaluated and preparedsubstrate. Refer to separate primer Product Data Sheet for application meth-ods, coverage rates, cure times and recoat windows. Always allow primer tocure thoroughly before applying detail or base resin layer.Sikalastic® RoofPro-641 Lo-VOC Priming GuideSubstrate Primer optionsConcrete1 Sikalastic® Concrete Primer Lo-VOC

Sika® Concrete PrimerSikalastic® DTE PrimerSikalastic® EP Primer/Sealer

Lightweight structural concrete*1 Sikalastic® Concrete Primer Lo-VOCSika® Concrete PrimerSikalastic® DTE Primer

Cement, gypsum based roof boards Sikalastic® Concrete Primer Lo-VOCSika® Concrete PrimerSikalastic® EP Primer/Sealer

Brick, stone*3 Sikalastic® Concrete Primer Lo-VOCSika® Concrete PrimerSikalastic® EP Primer/Sealer

Bituminous substrate-asphalt, bituminous felts, bitumin-ous coatings, granulated or smoothSBS & APP cap sheets2,3

Sikalastic® EP Primer/Sealer

Single ply roofing membranes-hypalon, TPO, EPDM, PVC*3

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Roof tiles (unglazed)*3,4 Sikalastic® EP Primer/SealerFiberglass*3 Sikalastic® EP Primer/SealerPolyurethane foam - sprayed or slabstock


Metal-aluminium, galvanized, cast iron,copper, lead, brass, stainless steel,steel, zinc3


Pre-coated metal*3 -Paints & Coatings-paints & coatings3-aluminized solar reflective coatings3


Wood - Timber & plywood*5 Sikalastic® EP Primer/Sealer* Consult Sika.1 New cementitious substrates must be Portland base and be cured min. 28 days.2 The presence of volatile bitumen may cause discoloration of Sikalastic® if not properly primed.3 Surface evaluation and field adhesion testing.4 Glazed tile consult Sika.5 Pressure treated lumber consult Sika.

Waiting / Recoat Times Ambient conditions Minimum waiting time overcoating+40 °F / 50 % r.h. 18 hours+50 °F / 50 % r.h. 8 hours+70 °F / 50 % r.h. 6 hours

*After 7days the surface must be cleaned and primed with Sika® Reactiva-tion Primer before continuing.Note: Times are approximate and will be affected by changing ambient condi-tions particularly temperature and relative humidity.


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Applied Product Ready for Use Ambient condi-tions

Rain resistant Touch dry Full cure

+40 °F / 50 % r.h. 1 hour 12 hours 24 hours+50 °F / 50 % r.h. 1 hour 6 hours 18–24 hours+70 °F / 50 % r.h. 1 hour 4 hours 12–18 hours

Note: Times are approximate and will be affected by changing ambient condi-tions particularly temperature and relative humidity.

PRODUCT INFORMATIONPackaging 5 gal. (19 L) pails

Shelf Life 12 months in original, unopened and undamaged sealed containers

Storage Conditions Store dry at 35–77 °F (2–25 °C). Condition material to 50–77 °F (10–25 °C) be-fore using for ease of application

APPLICATION INSTRUCTIONSSUBSTRATE PREPARATION

Substrate Evaluation Concrete and cementitious substratesNew concrete shall be allowed to cure a minimum of 28days. Concrete shall have a minimum compressivestrength of 20.7 MPa (3000 psi) and exhibit a minimumtensile bond strength of 1.4 MPa (200 psi). time. Moistor sheet curing methods should be used, as opposed tothe use of curing compounds, which may interfere withthe bond of the membrane. Inspect the concrete, includ-ing upstands, and all areas should be hammer tested.Concrete must be suitably finished, preferably by woodfloat or steel pan. A power float finish is acceptablewhere the surface is prepared to avoid laitance (atamped finish is not acceptable). The surface finish mustbe uniform and free from defects such as laitance, voidsor honeycombing. Gypsum and Cement based sheathingSheathing boards shall be clean, dry and dust free, andshall be properly secured to the structure. Loose, dam-aged, or contaminated boards shall be removed and re-placed. Brick and stoneMortar joints must be sound and preferably flush poin-ted. AsphaltAsphalt contains volatiles which can cause bleeding andslight non-detrimental staining. The asphalt must becarefully assessed for moisture and/or air entrapment,grade and surface finish. Bituminous feltEnsure that bituminous felt is firmly adhered or mechan-ically fixed to the substrate. Bituminous felt shall not

contain badly degraded areas. Bituminous coatingsBituminous coatings shall not have sticky or mobile sur-faces, volatile mastic coatings, or old coal tar coatings. MetalsMetals must be in sound condition. Wooden substratesPlywood and timber based roof decks must be in goodcondition, firmly adhered and mechanically fixed. All ply-wood should be identified as conforming to PS 1 for con-struction and industrial plywood by grade, APA (Americ-an Plywood Association) trademark, or equivalent. Formaximum smoothness, EXT Type APA, Grade A-C shouldbe used, and the “A” side should be positioned to re-ceive the Sikalastic® resin. Plywood decks to receive res-in directly shall be at least 1/2'' thick and attached andsupported according to APA guidelines, using only non-rusting screw, spiral or coated nail type fasteners. Agood practice would be to recess or counter sink fasten-ers 1/8 to 1/4'' and fill with Sikaflex sealant. Suitableedge support to prevent differential deflection betweenpanels shall be provided. Panel edges shall be tongueand groove or supported on solid blocking. Space panels1/8 to 3/16'' at panel ends. Paints and coatingsEnsure the existing material is sound and firmly adhered. Existing Sikalastic® RoofPro SystemThe existing Sikalastic® RoofPro System shall be soundlyadhered to the substrate. Surface Preparation Concrete and cementitious substratesCementitious or mineral based substrates must be pre-pared mechanically using abrasive blast cleaning or scari-fying equipment to remove cement laitance and to


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achieve an open textured surface (CSP 3-5 per ICRIguidelines). Loose friable material and weak concretemust be completely removed and surface defects suchas blowholes and voids must be fully exposed. Theamount of embedment coat required may increase overrough or highly porous surfaces.Repairs to the substrate, filling of joints, blowholes/voidsand surface levelling must be carried out. Consult Sikafor product recommendations based on project require-ments. High spots must be removed by grinding or simil-ar method. Outgassing is a naturally occurring phe-nomenon of concrete that can produce pinholes in li-quid applied materials. The concrete must be carefullyassessed for moisture content, air entrapment, and sur-face finish prior to any roofing work. Particular require-ments for priming must also be considered. Installing theprimer and membrane either when the concrete tem-perature is falling or stable can reduce outgassing. It isgenerally beneficial, therefore, to apply the primer andembedment coat in the late afternoon or evening. Gypsum and Cement based sheathingSheathing boards shall be clean, dry and dust free. Se-cure loose boards if in sound condition. Damaged or con-taminated boards shall be removed and replaced.Brick and stonePower wash and use biodegradeable non-sudsing deter-gent with clean water rinse as required. AsphaltPower wash and use biodegradeable non-sudsing deter-gent with clean water rinse as required. All major cracksshould be sealed to allow continuity of the Sikalastic®RoofPro system. Bituminous feltPower wash and use biodegradeable non-sudsing deter-gent with clean water rinse as required. Treat blisters bystar cutting and removing any underlying water. Allow todry and re-adhere using suitable adhesive. Bituminous coatingsRemove any loose or degraded coatings. MetalsFerrous metals should be thoroughly cleaned by grind-ing or blast cleaning prior to priming (SSPC-SP3 to near-white metal). Non-ferrous metals are prepared by re-moving any deposits of dust and oxidation and abradingto bright metal. Wire brushing can be used for soft met-al such as lead. The surface must be clean and free fromgrease which, if present, must be removed with asolvent wipe or wash with detergent, rinse and dry.

Wooden substratesTimber and timber based roof decks require additionalreinforcement such as the installation of plywood, ap-proved insulation or cover board. Small timber protru-sions and suitable decks may be treated directly,provided that the timber is of exterior quality, e.g. ply-wood. Fill joints flush with Sikaflex® sealant. Paints/CoatingsRemove any loose or degraded coatings. Ensure the sur-face is clean and free from grease. Sikaplan®/Sarnafil® membranesClean membranes with Sarna® Cleaner (PVC mem-branes) and Sarnafil® T Clean (TPO membranes) prior toapplication of primer. Existing Sikalastic® RoofPro SystemsClean the membrane using a water jet at approximately140bar (2000 psi) and biodegradeable non-sudsing de-tergent with clean water rinse. Allow todry.

MIXING

No mixing necessary.

APPLICATION

Concrete and cementitious substrates: New concreteshall be allowed to cure a minimum of 28 days. Con-crete shall have a minimum compressive strength of 20.7MPa (3000 psi) and exhibit a minimum tensile bondstrength of 1.4 MPa (200 psi). time. Moist or sheet cur-ing methods should be used, as opposed to the use ofcuring compounds, which may interfere with the bond ofthe membrane. Inspect the concrete, including upstands,and all areas should be hammer tested. Concrete mustbe suitably finished, preferably by wood float or steelpan. A power float finish is acceptable where the sur-face is prepared to avoid laitance (a tamped finish is notacceptable). The surface finish must be uniform and freefrom defects such as laitance, voids or honeycombing. Gypsum and Cement based sheathing: Sheathing boardsshall be clean, dry and dust free, and shall be properlysecured to the structure. Loose, damaged, or contamin-ated boards shall be removed and replaced. Brick and stone: Mortar joints must be sound andpreferably flush pointed. Asphalt: Asphalt contains volatiles which can causebleeding and slight non-detrimental staining. The as-phalt must be carefully assessed for moisture and/or airentrapment, grade and surface finish. Bituminous felt: Ensure that bituminous felt is firmly ad-hered or mechanically fixed to the substrate. Bitumin-ous felt shall not contain badly degraded areas.


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Bituminous coatings: Bituminous coatings shall not havesticky or mobile surfaces, volatile mastic coatings, or oldcoal tar coatings. Metals: Metals must be in sound condition. Wooden substrates: Plywood and timber based decksmust be in good condition, firmly adhered and mechan-ically fixed. All plywood should be identified as conform-ing to PS 1 for construction and industrial plywood bygrade, APA (American Plywood Association) trademark,or equivalent. For maximum smoothness, EXT Type APA,Grade A-C should be used, and the “A” side should bepositioned to receive the Sikalastic® resin. Plywooddecks to receive resin directly shall be at least 1/2'' thickand attached and supported according to APAguidelines, using only non-rusting screw, spiral or coatednail type fasteners. A good practice would be to recessor counter sink fasteners 1/8 to 1/4'' and fill withSikaflex® sealant. Suitable edge support to prevent dif-ferential deflection between panels shall be provided.Panel edges shall be tongue and groove or supported onsolid blocking. Space panels 1/8 to 3/16'' at panel ends.Paints and coatings: Ensure the existing material issound and firmly adhered. Existing Sikalastic® system: The existing Sikalastic® sys-tem shall be soundly adhered to the substrate. DetailingNon-structural cracks up to 1/16'': Detail application notnecessary. Apply embedment/base resin layer per be-low. Non-structural cracks between 1/16'' and 1/4'': Routand seal with Sikaflex® sealant. Apply 40-45 mil resin lay-er embedded with 3 inch Sika® Flexitape Heavy centeredover crack. Alternativly Sika® Joint Tape SA can be ap-plied. Apply embedment/base resin layer per below. Cracks and joints between 1/4'' and 1'': Rout and sealwith Sikaflex® sealant. Apply bond breaker tape suffi-cient to span width of crack or joint followed by 40-45mil resin layer embedded with 6'' Sika® Flexitape Heavycentered over crack or joint. Apply embedment/ baseresin layer by terminating Sika® Reemat/Fleece at edgesof crack or joint overlapping Sika® Flexitape Heavy a min-imum of 2'' on both sides. Joints greater than 1'': Treat as expansion joint. ConsultSika for recommendations. Metal seams and plywood/coverboard joints - Apply40–45 mil resin layer embedded with 3 or 6'' Sika® Flex-itape Heavy centered over seam. Alternativly Sika® JointTape SA can be applied centered over seam. Apply em-bedment resin layer per below. Transitions between dissimilar materials: Apply 40-45mil resin layer embedded with Sika® Flexitape Heavy

centered over edge. Apply embedment/ base resin layerper below. Embedment/Base Resin Layer with Sika® Reemat Rein-forcement: Mixing not required. Apply Sikalastic®-644Lo-VOC at the coverage rate in the RoofPro SystemGuide with a 1/2'' nap phenolic resin core roller. Materi-al can also be squeegee or spray applied, in which case itshould be backrolled prior to embedding Sika® Reemat.Place Sika® Reemat in wet base resin layer overlappingseams a minimum of 2'' (place frayed edge over cut edgeof roll) and apply wet roller to topside to saturate com-pletely. After approximately 5 minutes the binder willbegin to dissolve allowing the fiber strands to conform toirregular surfaces.Do not over work once the fibers have conformed to thesubstrate. Allow to cure 12 hours at 70 °F and 50 % R.H.or until tack free before top resin layer. Keep clean anddry and apply top resin layer within 7 days. If window isexceeded clean with non-sudsing detergent and cleanwater rinse, and allow to dry prior to application of Sika®Reactivation Primer. Top Resin Layer with Sika® Reemat Reinforcement: Mix-ing not required. Apply Sikalastic®-644 Lo-VOC at thecoverage rate in the RoofPro System Guide with a 1/2''nap phenolic resin core roller. Material can also besqueegee or spray applied, in which case it should alsobe backrolled. In the case of RoofPro 25 allow the firsttop resin layer to cure 12 hours at 70 degrees F and 50 %R.H. or until tack free before applying second top resinlayer. On top of the complete RoofPro system additionalresin layers may be applied with aggregate for slip resist-ance - consult Sika for recommendations. Keep clean anddry and apply additional resin layers within 7 days. Ifwindow is exceeded clean with non-sudsing detergentand clean water rinse, and allow to dry prior to applica-tion of Sika® Reactivation Primer. Wet on Wet Application with Sika® Fleece Reinforce-ment: Mixing not required. To primed substrate applytwo-thirds of the Sikalastic®-644 Lo-VOC specified in theRoofPro System Guide with a 1/2'' nap phenolic resincore roller. Immediately place specified Sika Fleece intowet resin overlapping seams a minimum of 3” along theedge and 6” end-to-end. Apply wet roller to topside withlight pressure to saturate fleece from bottom and en-sure air pockets are completely removed. Immediatelyapply all of remaining one-third of Sikalastic®-644 Lo-VOC resin specified in the RoofPro System Guide to en-sure even and complete fleece saturation from topsideand uniform texture.

CLEANING OF TOOLS

Clean all tools and application equipment with appropri-ate solvent immediately after use. Hardened and/orcured material can only be removed mechanically


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LIMITATIONSMinimum age of concrete must be 28 days dependingon curing and drying conditions.

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Do not thin with solvents.▪Do not store materials outdoors directly exposed tosunlight and moisture. Cover and protect material withbreathable type covers such as canvas tarpaulins to al-low venting and protection from weather and mois-ture. Observe temperature storage and conditioningrequirements.

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Do not apply to substrate surfaces where moisture va-por transmission will occur during application andcure.This condition may be checked using ASTM D 4263(Polyethylene sheet method).

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Substrate must be dry prior to application. Do not ap-ply to a frosted, wet or damp surface. Allow sufficienttime for the substrate to dry after rain or inclementweather, as there is the potential for bonding prob-lems.

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On substrates likely to exhibit outgassing apply duringfalling ambient and substrate temperature. If appliedduring rising temperature pinholing or blistering mayoccur.

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Use sunglasses with UV filter when applying highly re-flective Sikalastic®- 644 Lo-VOC White (RAL 9016).

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Do not use for indoor applications unless sufficient airflow and ventilation are provided to prevent odorsand/or vapors from leaving the immediate work area.

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Precautions should be taken to prevent odors and/orvapors from entering the building/structure, includingbut not limited to turning off and sealing air intakevents or other means of ingress for odors and/or va-pors into the building/structure during product applica-tion and cure.

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For areas with direct exposure to heavy or frequentfoot traffic, an additional wear coat protection with slipresistant aggregate is required. Opening to traffic priorto cure may result in loss of aggregate or permanentstaining and subsequent premature failure.

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Any repairs required to achieve a level surface must beperformed prior to application (consult a Sika repres-entative for guidance on various product solutions).Surface irregularities may reflect through the cured sys-tem.

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When applying over existing coatings or membranescompatibility and adhesion testing and subsequent ap-proval by Technical Services is required.

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Opening to traffic prior to cure may result in loss of ag-gregate or permanent staining and subsequent prema-ture failure.

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On grade concrete decks should not be covered withSikalastic® RoofPro membrane systems.

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Unvented metal pan, split/sandwich slab with encapsu-lated membrane and/or insulation, cinder fill decks,and lightweight insulating concrete deck overlaysshould not be covered with Sikalastic® RoofPro sys-tems without additional deck evaluation and sub-sequent approval by Technical Services.

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Do not subject to continuous immersion, i.e., fountains,▪

ponds, pools, or interior of tanks.Not recommended for use over ceramic tile.▪

BASIS OF PRODUCT DATAResults may differ based upon statistical variations de-pending upon mixing methods and equipment, temper-ature, application methods, test methods, actual siteconditions and curing conditions.

LOCAL RESTRICTIONSNote that as a result of specific local regulations the de-clared data and recommended uses for this product mayvary from country to country. Consult the local ProductData Sheet for the exact product data and uses.

ECOLOGY, HEALTH AND SAFETYKeep container tightly closed. Keep out of reach of chil-dren. Not for internal consumption. For industrial useonly. For professional use only. For further informationand advice regarding transportation, handling, storageand disposal of chemical products, users should refer tothe actual Safety Data Sheets containing physical, ecolo-gical, toxicological and other safety related data. Readthe current actual Safety Data Sheet before using theproduct. In case of emergency, call CHEMTREC at 1-800-424-9300, International 703-527-3887.


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LEGAL DISCLAIMERKEEP CONTAINER TIGHTLY CLOSED •KEEP OUT OFREACH OF CHILDREN •NOT FOR INTERNAL CONSUMP-TION •FOR INDUSTRIAL USE ONLY •FOR PROFESSION-AL USE ONLY

Prior to each use of any product of Sika Corporation, itssubsidiaries or affiliates (“SIKA”), the user must alwaysread and follow the warnings and instructions on theproduct’s most current product label, Product DataSheet and Safety Data Sheet which are available atusa.sika.com or by calling SIKA’s Technical Service De-partment at 800-933-7452. Nothing contained in anySIKA literature or materials relieves the user of the oblig-ation to read and follow the warnings and instructionsfor each SIKA product as set forth in the current productlabel, Product Data Sheet and Safety Data Sheet prior touse of the SIKA product.

For further information and advice regarding transporta-tion, handling, storage and disposal of chemicalproducts, user should refer to the actual Safety DataSheets containing physical, ecological, toxicological andother safety related data. User must read the current ac-tual Safety Data Sheets before using any products. Incase of an emergency, call CHEMTREC at 1-800-424-9300, International 703-527-3887.

SIKA warrants this product for one year from date of in-stallation to be free from manufacturing defects and tomeet the technical properties on the current ProductData Sheet if used as directed within the product’s shelflife. User determines suitability of product for intendeduse and assumes all risks. User’s and/or buyer’s soleremedy shall be limited to the purchase price or replace-ment of this product exclusive of any labor costs. NOOTHER WARRANTIES EXPRESS OR IMPLIED SHALL AP-PLY INCLUDING ANY WARRANTY OF MERCHANTABIL-ITY OR FITNESS FOR A PARTICULAR PURPOSE. SIKASHALL NOT BE LIABLE UNDER ANY LEGAL THEORY FORSPECIAL OR CONSEQUENTIAL DAMAGES. SIKA SHALLNOT BE RESPONSIBLE FOR THE USE OF THIS PRODUCTIN A MANNER TO INFRINGE ON ANY PATENT OR ANYOTHER INTELLECTUAL PROPERTY RIGHTS HELD BY OTH-ERS. Sale of SIKA products are subject to the Terms andConditions of Sale which are available athttps://usa.sika.com/en/group/SikaCorp/termsandcon-ditions.html or by calling 201-933-8300.

Sikalastic-644Lo-VOCWaterproofingSystem-en-US-(08-2018)-1-3.pdf

Sika Corporation201 Polito AvenueLyndhurst, NJ 07071Phone: 800-933-7452Fax: 201-933-6225

Sika Mexicana S.A. de C.V.Carretera Libre Celaya Km. 8.5Fracc. Industrial BalvaneraCorregidora, QueretaroC.P. 76920Phone: 52 442 2385800Fax: 52 442 2250537

Sika Canada Inc.601 Delmar AvenuePointe ClaireQuebec H9R 4A9Phone: 514-697-2610Fax: 514-694-2792

SIKA CORPORATION – ROOFING100 Dan RoadCanton, MA 02021Phone: 800-451-2504Fax: 781-828-5365


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Sikalastic®-644 Lo-VOC Waterproofing System...create a seamless membrane and flashing system....

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