Sikaflex SL 1 is one component, non-priming, self-leveling elastomeric polyurethane designed for expansion joints in concrete floors and decks. Use it where flexibility as well as abrasion and puncture resistance are required.
Sikaflex SL 1 is a single-component, self-leveling polyurethane sealant designed for horizontal joints in concrete floors, decks, and other high-traffic surfaces. It cures by reacting with atmospheric moisture to form a durable, flexible elastomeric seal. With ±35% movement capability and excellent adhesion to concrete and metal, this non-priming sealant installs easily and resists abrasion, puncture, and weather exposure. Its smooth finish and ability to self-level make it ideal for expansion and control joints where clean appearance and performance are both essential.
Property | Value |
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Chemical Base | Polyurethane, moisture-cured |
Movement Capability | ±35% |
Shore A Hardness | 25 |
Tensile Strength | 300 psi |
Elongation at Break | 800% |
Service Temperature | -40°F to 180°F |
Low-Temp Flexibility | -15°F |
Weather Resistance | Excellent (ASTM G26) |
Skin Time | Overnight to 24 hours |
Full Cure | Approx. 7 days |
Shrinkage | None |
Packaging | 30oz cartridge |
Color | Limestone |
Does Sikaflex SL 1 require tooling?
No, it is self-leveling and flows to create a smooth finish on its own.
Can this product be used outdoors?
Yes, it is suitable for both interior and exterior horizontal applications.
What is the cure time?
Full cure is approximately one week, depending on temperature and humidity.
Brand | Sika |
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Color | Limestone |
Size | 30oz |
Manufacturer | Sika |