Sikasil silicones offer maximum adhesion, durability, and flexibility in most applications in new construction or building restoration. The products can improve the life of any concrete building or structure, especially when water and air tightness are necessary for thermal insulation. Sikasil WS-290 is an ultra-low modulus, netural-cure, and no-bleed silicone sealant used for installing windows, doors, and skylights; EIFS system joints and precast expansion joints; and weather sealing. Sikasil WS-295 can be used for structural glazing and weather sealing applications. Sika Corp. 800-933-7452.