Unibond general purpose silicone is an acetoxy curing silicone sealant which forms a permanent flexible seal movement capacity 125 the sealant provides a weatherproof seal and has excellent adhesion to most construction materials including many plastics vitreous enamel glass metal alumunium brickwork glazed ceramic and porcelain tiles also suitable for draughtproofing windows and doors and for sealing gutters and downpipes coverage approx 106m using a 6mm bead not suitable for polycarbonate sh