Sikaflex® SL 1
Short Description
Sikaflex® SL 1 is a one-component, self-leveling polyurethane sealant designed for horizontal expansion joints in concrete floors, decks, driveways, sidewalks, and parking structures. With ±35% movement capability, superior weather resistance, and no tooling required, it provides long-lasting, flexible seals for commercial and residential applications.
Sikaflex® SL 1 is a high-performance, self-leveling polyurethane sealant engineered for horizontal expansion and control joints in concrete surfaces. Its one-component, moisture-curing formulation allows for easy application without the need for priming or tooling, reducing labor costs and installation time.
With ±35% movement capability, Sikaflex® SL 1 accommodates expansion and contraction in joints, ensuring long-term flexibility and weather resistance. It adheres strongly to concrete, metal, and other common substrates, providing a durable, watertight seal that withstands traffic, weather exposure, and temperature fluctuations.
Key Benefits of Sikaflex® SL 1:
- Self-leveling formula—no tooling required for smooth application
- ±35% movement capability—absorbs expansion and contraction
- Abrasion and puncture-resistant—ideal for high-traffic areas
- No priming needed on most surfaces—reduces installation time
- Excellent weatherability—UV and water-resistant for long-term performance
- Wide application temperature range—suitable for all climates
- Meets ASTM C 920 and Federal Specifications—ensuring industry compliance
Common Applications:
- Concrete expansion and control joints
- Driveways and sidewalks
- Parking structures and industrial floors
- Plaza decks and pavers
- Balconies and stadiums
- Horizontal pitch pans and joint sealing
💡 Available in 300 ml and 825 ml cartridges, as well as 2-gallon and 5-gallon pails, with a 6-month shelf life for bulk and 1-year shelf life for cartridges when stored properly.
