FS550 is a one component, low modulus, odorless, high quality, high quality neutral silicone sealant which provides sealing against external weather conditions of cladding, structural façade and joinery joints. It provides excellent adhesion to porous and non-porous surfaces such as stone walls, bricks, Aluminum, PVC-U, polycarbonate, polyacrylate, wood, glass and polished surfaces.