How many coats of waterproof coating, and how high should bathroom waterproofing go?
Apply two to three coats with alternating directions, waiting 4–8 hours between coats until each is dry. In bathrooms, take wall waterproofing to about 1.8 m in the shower area and at least 30 cm elsewhere, and cover the whole floor; reinforce wall-floor junctions, corners and pipe roots first. Then run a 24–48 hour ponding test before tiling. Lvkang offers JS polymer cement waterproofing plus K11 general and flexible types.