Jenolite Stop Leak Sealer has been specifically developed to fill & seal joints in leaking guttering, pipework, drains, windows, roofs and other leaking areas. Stop Leak Sealer's gap-filling and waterproof properties make it the perfect sealant for leaking joints that have become loose due to weather and corrosion. The spray creates a completely waterproof and corrosion-resistant surface, that remains flexible and pliable for years, and can be painted once cured. Simple to apply, it instantly creates a long-lasting water-resistant layer that prevents water ingress. This highly flexible and hardwearing waterproof sealant is ideal for repairing a wide variety of roofing, guttering, and window leak issues. Common applications include garages, sheds, extensions, porches, bay windows, downpipes and guttering, soffit and facias, wastepipes caravans, and motorhomes. Stop Leak sealer is effective on materials including felt, GRP, bitumen, metal, concrete, brick, asphalt, fiberglass, tiles,