Sikaflex 1A is a premium-grade, high-performance, polyurethane-based, non-sag elastomeric sealant. Sikaflex 1A can be used in green and damp concrete applications and is readily placeable at 40°F.
Sikaflex-1A is a one-component, moisture-cured polyurethane sealant used in a wide range of construction joints. This high-performance, non-sag sealant adheres to most substrates without primer and can be used on green or damp concrete. It’s designed for both vertical and horizontal joints and can handle movement of ±35%. Sikaflex-1A is ideal for applications where durability, weather resistance, and elasticity are essential.
Property | Value |
---|---|
Movement Capability | ±35% |
Tack-Free Time | 3 to 6 hours |
Final Cure | 4 to 7 days |
Tensile Stress (21 day) | 175 psi |
Elongation at Break | 550% |
Shore A Hardness | 45 ±5 |
Tear Strength | 55 lb/in |
Service Temperature Range | -40°F to 170°F |
Shelf Life (Cartridge) | 12 months |
Where can Sikaflex-1A be used?
It’s suitable for vertical and horizontal joints, small gaps, windows, door frames, flashing, and construction adhesive tasks.
Can I use Sikaflex-1A on green concrete?
Yes. It can be used 24 hours after pouring green concrete or 1 hour after wet concrete has been dried off.
Is primer required?
Not usually. Most surfaces do not need primer unless testing shows it's needed or if sealant will be submerged after curing.
Can it be painted?
Yes. It can be painted with water-, oil-, or rubber-based paints after full cure. Test for compatibility before painting.
Brand | Sika |
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Color | Aluminum Gray |
Size | 10oz |
Manufacturer | Sika |