FILLCOAT® WATERPROOFING is a waterproofing product that immediately closes leaks in roofs. The products can be used for gutters, ridges, on sides and drains. Unique to this product is that you can use them in all kinds of weather. FILLCOAT® WATERPROOFING can be applied to most materials: Roofing, Roofing felt, Bitumen, Asphalt, Hard PVC, Polyester, Zinc, Aluminum, Glass, Tiles.