Cheap Price Spray Transparent Silicone Rubber Waterproof Coating for Concrete Roof. Eco-Friendly & Non-Toxic: Single component water-based coating, non-toxic, non-odor, and no pollution. High Elasticity: 600% elongation and excellent resistance to crack, ensuring durability. Multi-Substrate Application: Suitable for concrete, wood, glass, ceramic, and cement mortar surfaces. Versatile Usage Scenarios: Ideal for roofs, basements, bathrooms, swimming pools, and bridges. Easy Construction: Can be applied via spray, brush, or roller with simple dilution. Customizable Packaging: Available in various sizes from 300g to 2000kg to meet different needs. Certified Quality: Complies with CE, ISO, and MSDS standards for safety and quality. Long Service Life: Good resistance to aging, alkali, and acid for extended protection.