Hello, I would like to ask about the problem of waterproofing the bathroom wall

1.How many walls of the shower area need to be waterproofed? Is it just the shower wall?

No; The walls of the shower stupid brother area should be made of mu yards, and it is best to do 180cm to the roof.

2.The decorating company's statement is incorrect, and you are quite right. But it can no longer be done on the back of the wall, let alone what waterproof paint is used!

Only by doing it on the wall in the bathroom can it effectively prevent the domestic water of the bathroom from seeping into the wall, and avoid mildew and moisture relapse on the back of the wall; Leakage to the lower floors, etc. The waterproofing material used must be cement-based waterproof coating, which is the safest and most effective.

Now that the wall has been pasted with bricks, it is recommended that if the demolition loss is not large, it is best to remove the tiles and redo the waterproofing; If the loss is large, fill the bathroom with water to a height of 30cm and test whether the ground is leaking "closed water test", and do a water spray test on the wall of the shower area (spray water on the wall with a water pipe) If there is no leakage, it means that the waterproof performance of the blank room itself is good, so the outer wall of the bathroom is fully painted with cement-based waterproof paint to the top.

1.How many walls of the shower area need to be waterproofed? Is it just the shower wall?

No; The wall of the shower area should be done, and it is best to make it 180cm to the roof.

2.The decorating company's statement is incorrect, and you are quite right. Not only can it no longer be done on the back of the wall, but it is not what waterproof paint is used!

Only by doing it on the wall in the bathroom can it effectively prevent the domestic water of the bathroom from seeping into the wall, and avoid mildew and moisture relapse on the back of the wall; Leakage to the lower floors, etc. The waterproofing material used must be cement-based waterproof coating, which is the safest and most effective.

Now that the wall has been pasted with bricks, it is recommended that if the demolition loss is not large, it is best to remove the tiles and redo the waterproofing; If the loss is large, fill the bathroom with water to a height of 30cm and test whether the ground is leaking "closed water test", and do a water spray test on the wall of the shower area (spray water on the wall with a water pipe) If there is no leakage, it means that the waterproof performance of the blank room itself is good, so the outer wall of the bathroom is fully painted with cement-based waterproof paint to the top.

1.Theoretically, each wall of the shower area should be waterproof at least one meter, and it makes no sense to make only one wall. 2.

After laying the bricks, I remembered that I had not done waterproofing, and the decoration manager was too unprofessional. There is no point in waterproofing the back of the shower wall, as you said, if it leaks, the water will leak elsewhere. Now that the decoration is complete, do a closed water test for more than 24 hours (how to do a "closed water test" can be done with the following methods and standards).

If it leaks downstairs, knock it off immediately, redo the waterproofing test, and then close the water test, and then put the brick. If the developer did the waterproofing for you when you built the building, and you didn't damage the waterproof layer when you renovated it, then congratulations, you are lucky!

Now the minimum requirement is to make meters from the wall where the shower head is installed and the wall against the bedroom. There are three solutions to your current situation, 1. Make a layer of waterproofing on the bedroom side, and it is best not to choose a membrane type. This everyone said that there will be certain hidden dangers.

2 is to choose a good tile caulk, a good caulk can also be waterproof, I don't know how the quality of your brick is, don't worry about buying a pot of JCDecaux brand Rubic it, transparent waterproofing agent, spray on the surface of the tile on it.

3 is to knock it out and do it again.

Personally, I think the second method is the most practical, but you still need to consider which method is more suitable for you.

The wall is generally waterproof on all sides, and the shower side can be made higher. Waterproofing is mainly done on the ground, to prevent seepage downstairs, the tiles have been paved, it is a pity to smash, it is recommended that you go to the market to buy a special grout, hook a seam, the effect is still good.

The back of the wall is not waterproof, there will be hidden dangers, and it must be done to penetrate crystallization.

Generally, the bathroom is all waterproof, and the waterproof height is 1800mm to ensure the effectiveness of waterproofing.