The Bostik Waterproofer is a 5L bitumen coating designed to effectively waterproof surfaces. Made by the trusted brand Bostik in the UK, this product is perfect for various building materials to keep them protected from moisture. Ideal for use in various industrial and commercial settings, this damp-proofer paint is a reliable solution for keeping your surfaces dry and secure. Whether you're looking to waterproof roofs, walls, or floors, the Bostik Waterproofer is a high-quality choice for your building needs.