1. First, clean and dry the surface. Measure and cut the wet room floor waterproof layer to the length you need. Tear off the red tape and paste it on a flat surface. Fill the edges of the waterproof layer and let it dry for 24 hours until the sealant hardens (Silicone sealant is not included in the package)!!! 2. The wet room floor waterproof layer is made of food - grade silicone, which is corrosion - resistant, high - temperature resistant, and wear - resistant. It is thick and elastic. Just wipe it with a wet towel, and it will be as clean as new. 3. The shower stopper is very suitable for water - free showers and other places that need water storage: under the shower curtain, next to the shower tray, on the bathtub windowsill, on the billiard table, next to the washing machine, in the sink, on the closed chair, and on the bathtub edge. 4. It is flexible enough to create various curved shapes. It can be applied to flat and smooth tiles, glass, or ceramics. It is very suitable for the outer edge of the shower tray. It is a home flood - prevention barrier that can prevent water from accumulating during a shower and stop water from overflowing. 5. The silicone waterproof layer is 16 mm wide x 30 mm high and is flexible enough to be cut into the size you need.