After my bathroom was waterproofed, a layer of sand was laid, and the bricklayer said that he would

After doing waterproofing, after drying, the water should be discharged to a depth of more than 30mm, the water test should be turned off for 48H, and there should be no leakage downstairs to check that there is no leakage before the follow-up construction work can be done.

It is easy to damage the waterproof layer without doing the waterproof protective layer, causing leakage, and the polyurethane waterproof layer should wait for drying, and the membrane should be glued well, put a certain depth of water, and wait for more than 24 hours below to do the waterproof protective layer immediately, and then lay the tiles after completion.

First of all, you have to understand that the waterproof protective layer is cement mortar, not sand!

What material is the waterproof layer, the rigid waterproof layer does not need to be protected.

The elastic waterproof layer should be coated with a layer of cement mortar as a protective layer, which is necessary.

It is certainly not right to do so. Because you will damage the ground waterproof layer during the construction of wall tiles, it is normal to carry out a closed water test after waterproofing, and there is no real estate market doing ground protection layer after at least 24 hours. can be used for tiling construction.

If the wall and floor joints are required, the floor tiles should be laid first, and the wall tiles should be pasted.

It is recommended to do it in this order, after the hydropower renovation is completed, the slotting will be done once, and the waterproofing will be done again after the pipeline is laid. In this way, the double-layer waterproofing ensures that there is no leakage, and then the next set of pavement construction is done.