Sikaflex 15LM is a premium, one-component, low-modulus polyurethane sealant designed for durable, long-lasting joints in concrete and masonry construction. It is moisture-cured, non-sag, and easy to apply, making it ideal for vertical and horizontal applications where flexibility and movement capability are essential. Ideal Applications Expansion and control joints Precast concrete panels Masonry joints Window and door perimeters General building envelope sealing Each 300ml cartridge is designed for easy use with a standard caulking gun, delivering smooth tooling and consistent results.