Sika Sikaflex-1a - High-Performance, Moisture-Cured Polyurethane Sealant

Sika Sikaflex-1a is a premium-grade, single-component, polyurethane-based, elastomeric sealant designed for versatile applications. With excellent adhesion to most construction materials, Sikaflex-1a is suitable for vertical and horizontal joints, offering superior performance in both interior and exterior environments. This moisture-cured sealant is resistant to weathering, aging, and a wide range of chemicals, making it a durable choice for sealing and bonding applications. Certified for potable water use, Sikaflex-1a is paintable and capable of accommodating ±35% joint movement, making it ideal for dynamic joints and structural sealing.

Key Features:

• Moisture-cured, single-component polyurethane sealant
• Excellent elasticity and tear resistance
• Can be applied to green concrete (after 24 hours) and damp concrete (after 1 hour)
• Resistant to weathering, aging, and UV exposure
• Certified for potable water use (NSF/ANSI Standard 61)
• Paintable with water-, oil-, and rubber-based paints

Applications:

• Sealing vertical and horizontal expansion joints
• Windows, door frames, reglets, and flashing applications
• Elastic adhesive for dissimilar material bonding
• Submerged conditions such as canals and reservoirs

Technical Specifications:

Frequently Asked Questions:

What substrates can Sikaflex-1a adhere to?
Sikaflex-1a adheres to concrete, wood, metal, and other construction materials without the need for a primer.

Can it be used in submerged conditions?
Yes, Sikaflex-1a is suitable for submerged conditions, such as in canals and reservoirs, once fully cured.