Our transparent waterproof and leak-proof agent (100g) contains silicone and acrylic. It can form a solid film which can be easily and evenly covered with a brush. Its usage method is very simple: Keep the construction surface dry and free of water stains. Apply the waterproof glue evenly on the construction surface with a brush in small amounts and several times. It will heal after 18 to 24 hours of ventilation. And it can retain the natural appearance of the treated surface without any obvious traces of repair.