Basement Wall bitumen membrane waterproof Coating in manapparai. Rvs waterproofing construction chemicals Application Bituminous coating (asphalt coating) is made of bitumen based materials. It is a flexible protective coat based on its formulation and polymerization grade. The flexibility and protection against water can be influenced by the polymer grade and reinforcement of fiber.The most common applications of bituminous coatings include areas that are beneath screed wet. It is an excellent protective coating and waterproofing agent, especially on surfaces such as concrete foundationst is not suitable for exposure to sunlight unless it is modified with a more flexible material such as polyurethane or acrylic-based polymers. tiruchirappalli