First, be prepared
Before painting waterproof material, check the wall surface. The surface of the grass-roots level should be flat and there should be no defects such as emptying, sanding, and cracking.
Second, choose the right material
Waterproof construction is suitable for coating film waterproof material, and its performance must meet the requirements of the current national relevant standards, and there is a product qualification certificate.
Third, standard construction
1, the waterproof layer should extend from the ground to the wall, 30cm above the ground. The height of the waterproof layer on the bathroom wall should not be less than 180cm.
2, waterproof coating is not as thick as possible, but must ensure that brushing more than 2 times.
3, waterproof cement mortar leveling layer and the base combination of dense, no hollowing, the surface smooth and smooth, no cracks, sand, yin and yang angle made of rounded shape.
4, the coating waterproof layer brushing uniform, thickness to meet the requirements of product specifications, the general thickness of not less than 1.5mm, not exposed at the end.
5, the use of construction joints should be lapped in the direction of water, lap width of not less than 100mm, the use of more than two layers of glass fiber cloth when the upper and lower overlapping lap width should be one-half.
6, the film surface is not blistering, no runny, flat without bumps, and pipe fittings, sanitary fittings, floor drains, drainage joints tightly closed round head does not leak.
7, the thickness of the protective layer of cement mortar, strength must meet the design requirements, the operation is strictly prohibited damage to the waterproof layer, according to the design requirements to do a good ground flooding slope, drainage should be smooth, there must be no backwater slope phenomenon.
Fourth, closed water test
After brushing the waterproof material, it is necessary to conduct a water-sealing experiment for 24 hours. Close the door and the water outlet, the water at the highest point of the indoor water storage ground can not be less than 2cm, save at least 24 hours, observe no leakage phenomenon to be qualified. Instead, it must be redone, and you must not neglect it.
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