Do you have to remove the old tiles to do bathroom waterproofing, is it dirty?

Bathroom waterproofing needs to be done on the cement-based surface, so it is necessary to remove the tiles first, expose the flat, firm, oil-free dust, etc., and then use the kitchen and bathroom waterproof slurry to do waterproofing. Bathroom waterproof, the ground needs to be done all, the wall should be at least meters recommended to do full height, if it is a light wall, then it must be done full height, the following is a detailed construction method:

1. Chisel the cracks and parts that need to be repaired such as the root of the pipe and the floor drain into a "V" shape, clean them, and sprinkle them with water to moisten them;

2. Add water (water-cement weight ratio 1:2 3) to the [permeable crystalline repair mortar] and mix it evenly, and carry out repair construction before the initial setting (within 5 minutes), and the root of the pipe, the perimeter of the floor drain, the yin and yang corners, and the root of the wall should be made into r angles;

3. After the final setting of the repair mortar, stir the powder and liquid material of [durable waterproof slurry] evenly, let it stand for 3 minutes, stir it again and evenly brush it on the base surface, and it should be cross-brushed twice, and only after the first surface is dry can the second construction be carried out;

4. Anti-stampede after completion, closed water inspection can be carried out after 48 hours.

You don't need to remove the old tiles, you can use the interface agent to construct, and then do waterproofing on the interface agent, after the waterproof layer is dry, directly use the special adhesive for ceramic tiles to construct, and pave the new tiles.

No need to remove there is a transparent waterproof made on the tile surface.