REDOSEAL WS-100 weatherproofing silicone sealant is a one-part neutral cure,RTV, construction grade sealant that easily extrudes in any weather. It quickly curest at room temperature by reaction with moisture in the air to form a durable, flexible weather silicone seal. It has medium modulus characteristics and excellent un primed adhesion to most construction materials like ACP, glass, aluminium, wood, ceramic etc.