SIKA Sikaflex 1a 20 oz Sausage, Limestone, 1 Unit, One Component, Elastomeric, Non Sag, Polyurethane Concrete and Masonry Joint Sealant for Vertical and Horizontal Joints (20 Pack)

Sikaflex 1A is a high-performance, professional-grade polyurethane sealant designed for demanding construction and architectural applications. This single-component, moisture-cured elastomeric sealant delivers long-lasting flexibility, strong adhesion, and exceptional durability in both interior and exterior environments. Engineered for movement joints and general construction sealing, Sikaflex 1A cures to a tough yet flexible rubber-like material that accommodates structural movement while maintaining a weatherproof, watertight seal. It bonds effectively to most common building materials without the need for a primer, making application faster and more efficient.