Sikaflex 1a Kit: polyurethane sealant for concrete & masonry
One-component, moisture-cured polyurethane sealant with non-sag formula for vertical and horizontal surfaces. Strong adhesion to most construction materials without primer; suitable for green and damp concrete. Customer note: easy to use with good adhesion, though durability and flexibility receive mixed feedback
Highlights
- moisture-cured, one-component
- excellent adhesion without primer
- weather and aging resistance
Pros
- one-component polyurethane sealant
- non-sag elastomeric formula
- easy to apply with good adhesion
- resistant to aging and weathering
Cons
- mixed feedback on durability and flexibility
- concerns about shelf life
Best For
Features
- Non-sag elastomeric formulation tolerates about 35% movement for durability
- Suitable for vertical and horizontal joints with depths not exceeding 1/2 inch
- Designed for concrete and masonry, including green and damp concrete applications
- Cures to a flexible, weather-resistant seal suitable for various construction surfaces
