Basic material selection: new waterproofing materials such as cement mortar type, old type such as acrylic are commonly used bathroom waterproofing materials. We should be in line with the principle of easy construction, environmental protection, good quality to choose. Bathroom waterproofing how to do the first step, the joints should be brushed in place. The joints between the bathroom walls and floors as well as the joints between the water and sewage pipes and the ground are the most problematic places. You in the construction, must urge workers to deal with these edges and corners of the place, so waterproof coating must be painted in place.