Does the bathroom need to be waterproofed? How high to do?

The height is determined according to the need, generally speaking, the bathroom is waterproof 180 cm high, and the non-shower wall waterproof coating cannot be less than 35 cm in principle. However, in order to strengthen the waterproof effect, it is recommended to achieve a uniform height of 180 cm. In addition, for the light wall of the toilet and bathroom renovation and the self-built light wall, it is recommended that the waterproof height should be at the top.

Waterproofing paint must be brushed to the millimeter thickness of the national acceptance specification.

What needs to be done. The specification is that the shower room is not less than a meter high, and other parts are not less than a meter high.

Toilet waterproofing practices:

The toilet space of ordinary residential buildings is narrow, and there are pipelines passing through the floor slab, so the coating is commonly used for waterproofing and the membrane is rarely used for waterproofing.

There are 2 common types of paint waterproofing:

Synthetic polymer - polyurethane waterproof coating (polyester cloth, glass fiber cloth, etc. are required for corners, etc.).

Polymer modified asphalt - SBS waterproof coating (need to add carcass reinforcement materials, polyester cloth, glass fiber cloth, etc.).

Asphalt-based waterproofing coatings are basically gone.

Polyurethane waterproof coating is generally practiced as follows:

1. The ground is oriented to the slope of the floor drain, cement mortar or bean stone concrete, but the surface should be smooth. The slope near the door is small, and the slope near the floor drain is large, so you can grasp it according to the specific situation.

2. The pipeline passes through the root of the floor slab to strengthen the waterproofing. After the pipe root building sealing paste is sealed tightly, and the cement is smoothed and the foot pads are smoothed, the glass wire cloth reinforcement layer is 1 or 2 layers when brushing the waterproof coating. The same measures are taken near the floor drain.

3. The wall is clean and flat, without floating ash and small particles, and the small original corner or slope angle is wiped at the junction of the wall and ground. When brushing waterproof coating, paste 1 2 layers of glass wire cloth reinforcement.

4. The total thickness of the polyurethane waterproof coating film is required to be more than millimeters. It can't be decided by the number of passes. The pipe root and the corner of the reinforcing layer are brushed first, and after the surface is dried at room temperature for 4h, then a large area is brushed and scraped. There shall be no leakage and bubbling. Brush a large area for 24 hours and then apply the next layer after curing.

6. The waterproof layer on the ground should be painted 300 wide outside the door of the bathroom. The waterproof floor waterproof layer should be 200 meters higher than the ground, and the wall waterproof layer of the bathroom with shower should be 1800 meters higher than the ground (L8 recommends waterproofing the full wall).

The waterproof height of the wall around the bathroom is generally 30cm high, and you can consider whether to increase the height according to the frequency of your use. If it's a public place, you don't have to be that tall, 30-40cm is fine (because no one will take a shower here). For the sake of cost, in order to avoid unnecessary material waste, it can be adjusted according to the actual situation.

It is recommended that the kitchen is next door; facades; The walls of the bathroom are only 30 cm, and the rest are all over the wall. Because after a long time (three or five years), the moisture in the bathroom will pass through the walls and affect the wood or paint next door, and other things. After the waterproofing is done, the threshold should be made a water retaining line (for water testing).

After two days, the entire bathroom should be drained, the floor should be completely submerged, and then after 48 hours, go downstairs to see if there is any leakage or water infiltration. If not, you can put bricks.

The bathroom should generally be 1800mm, and the kitchen and balcony should be 300mm.

Not only the floor, but also the wall should be made 30cm high.

It needs to be waterproofed. About a meter, it doesn't matter how high or low.