Sikasil WS-290 FPS is a one-component field pigmentable silicone building sealant. Color packs are sold separately and custom colors are available. It is non-sag, neutral cure silicone sealant. Used for sealing expansion and control joints in precast concrete panels and metal curtain walls, weathersealing glass to glass butt joints, weathersealing nonstructural glazing, and sealing EIFS.