How to repair the black waterproof layer of the bathroom in the rough room

It is recommended that you do not engage in any destruction, because it is really time-consuming, laborious and costly. It is recommended that you first leave the ground dry for 2 days.

Then use the prepared white cement to fill the leakage between the tiles, after the white cement is dry, directly brush a digging layer CPC leak prevention agent, this thing is very powerful, after the white cement is dry again, your problem will be completely solved, if you have any problems, you can add or ask me.

It is recommended that you do not engage in any destruction, because it is really time-consuming, laborious and costly. It is recommended that you keep the ground dry for 2 days and then fill the leakage between the tiles with prepared white cement, and directly brush a layer of CPC leakage prevention agent after the white cement is dry, this thing is very powerful, after the white cement is dried again, your problem will be completely solved, if you have any questions, you can add or ask me.

Re-do waterproofing The developer's waterproofing is all fooling.

Let's just do waterproofing, the black one is polyurethane, and it doesn't do much.

What's the matter, mix some cement powder and coat it, cover the bricks, fill the grout, and it's good.