Our water-based sealant (300g) contains polydimethylsiloxane and methylchloroisothiazolinone. It can quickly and effectively repair wall cracks and provide a long-lasting sealing repair effect, making your walls look as good as new for years to come. Its usage method is very simple: First, clean the construction surface to ensure it is free of moisture. Then, apply this product directly to the construction area with a brush. Wait for 24 hours to dry. During this period, do not come into contact with water. After curing for a period of time, a waterproof layer can be formed. After use, it can repair damaged walls. After repair, it has strong adhesion and firmly combines with the wall surface, making the wall as durable as new for a long time.