1. My family's original waterproof layer is ready. Why do I still need waterproof layer?
Generally, the finished product has been waterproofed by the construction unit. Since the waterproof layer is often destroyed after installing the toilet or other equipment, the bathroom wall waterproofing layer used as a bathroom should have a height of 1.8 meters.
Therefore, in the renovation phase, it is recommended to do a waterproof layer.
2. What standard should be reached for waterproof layer construction?
The screeds for the kitchen and toilet shall have a certain slope (about 2%); the waterproof self-leveling screed will return 300mm to the wall; the shower and the septum shall have waterproof requirements; the wall should return 1800mm; the waterproof coating shall be full, without omission, and the grass Bonding is firm, no air bubbles, no cracks, no delamination, smooth surface, brushing height of rolling site is basically uniform, thickness must meet the requirements of the product;
3, after doing a good job of waterproofing, why do we need to close the water experiment?
Closed water test can verify the waterproof layer waterproof function is normal. Closed water test: The highest point of the aquifer depth is not less than 20 mm, and the impoundment time is not less than 24 hours.

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