Dowsil™ 781 is a one-part silicone sealant which has excellent adhesion to a wide range of non-porous surfaces including glass aluminium painted surfaces and composite boards Excellent resistance to ageing shrinkage cracking and discolouring Suitable for glazing applications weather sealing of sheet cladding and general internal sealing applications Tack-free in one hour with a working time of 5-10 minutes Skin over time is 14 minutes WRAS approved for use in contact with potable water once cured Conforms to ISO 11600-F&G-20LM