Our waterproof glue contains polydimethylsiloxane and methyl chloroisolinone. It is waterproof and mildew resistant, that is, it can penetrate the broken area and then form a waterproof layer on the surface. Its use method is very simple: clean the construction surface, ensure that the surface is not damp, apply the product directly to the construction area step with a brush, wait for 24 hours to dry, during this period do not touch the water, after the formation of a waterproof layer, water will not penetrate. And waterproof.