The first layer of the bathroom is waterproof, and then the compartment is made waterproof, and the

1. Hello all, when the commercial housing blank is closed, there is a waterproof layer in the bathroom that is done by the developer, which is called a waterproof. After receiving, it is necessary to do a second waterproofing before decoration. >>>More

The waterproofing of the bathroom is to ensure that after moving in, the water will not leak downstairs and will not penetrate into the wall, so as to ensure that the wall does not become moldy and the neighborhood is in harmony. >>>More

The reason why you do this waterproof and reverse the water is this, the reason is that the ground is not completely dry, because the moisture inside is reversed after brushing the waterproof, this has no effect on the quality, you can wait for the first waterproof to be completely dry in the second brush, I hope it will help you.

The bathroom roof does not need to be waterproofed, even if it is waterproof, if the waterproof layer of the upstairs bathroom is bad and leaking, the waterproof and waterproof of the back water surface is useless, if it is really an upstairs leak, ask the upstairs neighbor to do waterproof treatment this morning.

The bathroom ceiling is not waterproof, only the floor and the lower part of the wall are done. The aim is to prevent water from leaking under walls and floors.