Unibond Roof & Gutter Sealant - 300ml, Black This specially formulated waterproof sealant effectively fills gaps and joints in guttering, downpipes, drainpipes and roof tiles. It's easy to apply and you can trim the nozzle to suit the desired joint width. Waterproof Flexible silicone Suitable for exterior use Provides 11sq.m coverage with a 6mm bead Colour: Black
