Sikaflex 1A 20 Oz. White Sausage Pack Polyurethane Sealant Excellent for small joints and fillets, windows, door frames, reglets, flashing, common roofing detail applications, and many construction adhesive applications. Has many applications as an elastic adhesive between materials with dissimilar coefficients of expansion. Fast tack-free and final cure times. High elasticity - cures to a tough, durable, flexible consistency with exceptional cut and tear-resistance. Excellent adhesion - bonds to most construction materials without a primer. Capable of 35% joint movement.