Our leakage repair and waterproof adhesive contains pure C emulsion, silicone C emulsion and defoamer. It can be used without deformation or melting at high temperature, without cracking at low temperature, with good weather resistance, and can solve the problem of water leakage repair on roofs, external walls, window sills, bathrooms, basements, drains, parapets and so on. It is simple to use: clean and dry the inside and outside of the crack, take the right amount of glue and apply it evenly to the crack, about 12 hours later, apply it evenly for the second time. And it can prevent leakage.