Stormdry One Coat Liquid Rubber Leak Seal (500ml, Black) | Quick-Dry Waterproof Leak Sealer for Emergency Roof and Gutter Repair on Brick, Concrete, Metal, Roof Felt | Self-Levelling FOR GUTTERS, ROOFS & MORE | Quick leak repair for roofs, gutters, gutter joints and downpipes in damp or dry conditions. Bonds to brick, concrete, roof felt, tiles, fibreglass and more. ALL-WEATHER WATERPROOFING | Moisture-curing, so suitable for damp substrates. Use as roof leak sealant for flat and felt roofs, as flashing sealant for lead flashing repair and for gutter leak repair. SEALS & SELF-LEVELS | Self-levelling leak sealer fills and bridges cracks up to 5 mm. Pour or brush to self-level, then apply extra coats for full coverage water leak repair and leak prevention. UV-RESISTANT AND FLEXIBLE | Forms a durable elastomeric coating that resists UV exposure and stays permanently flexible for long-lasting protection and peace of mind. Solvent-free and isocyanate-free. VERSATILE TO USE | Compatible with most paints and coatings. Overpaintable after 48 hrs. Suitable for convenient general-purpose leak prevention. Don’t use below-ground, or on pipes/surfaces under pressure.