Polyurethane Sealants - Sikaflex®-1A

Elastomeric joint sealant / adhesive

Sikaflex®-1A is a premium-grade, high-performance, moisture-cured, 1-component, polyurethane-based, non-sag elastomeric sealant. Sikaflex-1a can be used in green and damp concrete applications. Meets Federal Specification TT-S-00230C, Type II, Class A. Meets ASTM C-920, Type S, Grade NS, Class 35, use T, NT, O, M, G, I, A. Canadian standard CAN/CGSB 19.13-M87.

• Eliminates time, effort, and equipment for mixing, filling cartridges, pre-heating or thawing, and cleaning of equipment.
• Fast tack-free and final cure times.
• High elasticity - cures to a tough, durable, flexible consistency with exceptional cut and tear -resistance.
• Stress relaxation.
• Excellent adhesion - bonds to most construction materials without a primer.
• Excellent resistance to aging, weathering.
• Proven in tough climates around the world.
• Can be applied to green concrete 24 hours after pour
• Can be applied to damp concrete 1 hour after getting wet
• Odorless, non-staining.
• Jet fuel resistant.
• Certified to the NSF/ANSI Standard 61 for potable water.
• Urethane-based; suggested by EPA for radon reduction.
• Paintable with water-, oil- and rubber-based paints.
• Capable of ±35% joint movement.

Usage

• Designed for all types of joints where maximum depth of sealant will not exceed 1/2 in.
• Excellent for small joints and fillets, windows, door frames, reglets, flashing, common roofing detail applictions, and many construction adhesive applications.
• Suitable for vertical and horizontal joints; readily placeable at 40°F
• Has many applications as an elastic adhesive between materials with dissimilar coefficients of expansion.
• Submerged conditions, such as canal and reservoir joints.

Advantages

• Eliminates time, effort, and equipment for mixing, filling cartridges, pre-heating or thawing, and cleaning of equipment.
• Fast tack-free and final cure times.
• High elasticity - cures to a tough, durable, flexible consistency with exceptional cut and tear -resistance.
• Stress relaxation.
• Excellent adhesion - bonds to most construction materials without a primer.
• Excellent resistance to aging, weathering.
• Proven in tough climates around the world.
• Can be applied to green concrete 24 hours after pour
• Can be applied to damp concrete 1 hour after getting wet
• Odorless, non-staining.
• Jet fuel resistant.
• Certified to the NSF/ANSI Standard 61 for potable water.
• Urethane-based; suggested by EPA for radon reduction.
• Paintable with water-, oil- and rubber-based paints.
• Capable of ±35% joint movement.

Packaging

10.1 fl. oz. (300 mL) Cartridge, 20 fl. oz. uni-pac Sausages, 4.5 gal (17 L) in a 5 gal pail, 52 gal (197 L) in a 55 gal drum

Color

White, colonial white, aluminum gray, limestone, black, dark bronze, capitol tan, stone and medium bronze. Special architectural colors on request.

Product Details

Sustainability / Certifications / Approvals

• ASTM C 920, Type S, Grade NS, Class 35, use NT, A, M
• Federal specification TT-S-00230 C Type II, Class A
• Canadian Standard CANICGSB 19.13-M87
• Certified to NSF/ANSI standard 61 for portable water

Product Information

Cartridge and Sausage: 12 months in original, unopened packaging.
Pail and Drum: 6 months in original, unopened packaging.

Store at 40°-95°F (4°-35°C).

Technical Information

Good resistance to water, diluted acids, and diluted alkalines. Consult Technical Service for specific data.

Excellent

−40 °F to +170 °F

Application

Application Information

Final cure: 4 to 7 days

Tack-free time 3 to 6 hours
Tack-free to touch 3 hours

Application Steps

Product Conditioning: Condition material to 65°-75°F before using.

Clean all surfaces. Joint walls must be sound, clean, frost-free, and free of oil and grease. Curing compound residues and any other foreign matter must be thoroughly removed. A roughened surface will also enhance bond. Install bond breaker tape or backer rod to prevent bond at base of joint. Priming is not usually necessary. Most substrates only require priming if testing indicates a need or where sealant will be subjected to water immersion after cure.

For green concrete applications control joints must be cut 8 hours prior to sealant installation and in expansion joint forms must be removed 4 hours prior to sealant installation. For wet concrete applications all excess or standing water must be displaced and concrete must then dry for a minimum of 60 min prior to sealant installation. Consult Sikaflex Primer Technical Data Sheet or Technical Service for additional information on priming.

Clean all tools and application equipment with Sika® Remover-208 immediately after use. Hardened material can only be removed mechanically.

For cleaning skin use Sika® Cleaning Wipes-100.

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