What are the requirements for waterproofing the bathroom? What to look out for?

The bathroom is waterproof, and the surrounding walls need to be painted at a height of not less than 30 cm; If there is a shower, the height of the waterproof paint applied on the installation of the shower faucet and the adjacent wall should not be less than 150 cm, preferably about 180 cm.

After the waterproofing is done, a closed water test should be done. It is to put the water on the floor of the bathroom, so that the ground is completely submerged in water about 3 4 cm, and set a fixed elevation (horizontal plane); After 24 hours, if the water level is below the set elevation, it means that there is a water seepage problem on the ground, that is, the waterproofing is not done well.

1.Before decoration, carefully check whether there is leakage in the kitchen and bathroom on the upper floor, and if there is, you should let the waterproofing project upstairs be done before decoration. If there are no occupants on the upper floor for the time being or for other reasons, the waterproofing works on the upper floor cannot be handled for a while, relevant measures should be taken to remediate the situation.

2.When decorating the kitchen and bathroom, if the original wall and floor tiles are removed and redecorated, regardless of whether the original waterproof layer has been made, the waterproof layer should be redone before the wall and floor tiles are repasted, and the waterproof layer of the side wall is more than 500mm high, and there is a bathtub part, and the waterproof layer should be done to all parts that the shower can spray, generally in 1800-2000mm.

3.Waterproof treatment when the kitchen and bathroom are not decorated: if the waterproof layer is not done before, the waterproof layer is added according to the above method; If the waterproof layer has been made, it should be carefully checked to see whether the waterproof layer is in place and whether it is damaged, otherwise it should be repaired.

After the repair, the water injection test (48 hours) is based on the fact that there is no leakage and no moisture on the downstairs and surrounding walls.

4.After the renovation of the kitchen, bathroom and other watery and damp parts is completed, the elevation of the ground should be lower than the elevation of the floor of the hall or corridor. The kitchen and bathroom door openings should be installed with stones that are not afraid of water, and waterproof treatment should be done at the roots to prevent water from seeping from the door openings to the living room.

5.Special attention should be paid to the threshold of the bathroom and kitchen walkway. Before installing the threshold, it is necessary to fill it with cement mixing, and then place the threshold and door after it dries, so that the daily cleaning of the bathroom and kitchen can be effectively blocked and spaced, and the waterproof and leak-proof effect can be effectively achieved.

First, use cement mortar to level the wall and floor, dry and solidify, and make waterproofing on the wall and the ground at the same time (polyamide waterproof paint is repeatedly painted 2 to 3 times).

Wall part: above the waterproof height; Ground part: pay attention to the dark corner of the wall, sewer pipe and the ground.

Leveling the ground and then waterproofing treatment can avoid leakage caused by uneven thickness of the waterproof coating. Do wall waterproofing: prevent splashing water on the wall when bathing, if there is no protection of the waterproof layer, the wall next door is easy to be damp and mildew.

First of all, choose a waterproof material that is suitable for home decoration. It is recommended to choose the polymer cement-based waterproof coating slurry commonly used in home decoration, that is, the name on the market is: general-purpose, flexible, K11, JS, GS waterproof coating slurry, this kind of product is water-based coating, non-toxic, harmless and pollution-free, simple and fast construction, and cement substrate bonding tightly, long service life, strong waterproof effect, moderate price and other significant characteristics.

Brands with good quality and good reputation, such as: Leibangshi waterproof slurry, JCDecaux waterproof coating, etc.

Clause. Second, the base surface (substrate) of the waterproof position should be treated. The base surface is treated into a firm, flat and clean surface, free of dust, greasy, wax and other debris substances; If there are pores, cracks and unequal defects on the base surface, it must be repaired and smoothed with cement mortar in advance, plastic strips are recommended to be pasted on the expansion joints, a layer of non-woven fabric must be added to the node, and the nozzle is recommended to use plugging king or nozzle grout; The corners of the wall should be plastered into an arc shape (or V-shaped); Make sure the base surface is sufficiently wet, but there is no open water;

Clause. Third, pay attention to the waterproof construction in place. Use a brush or roller brush to apply directly to the base surface, and the strength is used evenly, and the brush should not be missed; Generally, it needs to be brushed twice (according to the requirements of use), and the thickness of each brush should not exceed 1mm; After the previous one is slightly dry, the next one is brushed (just non-sticky, generally at an interval of 1-2 hours), and the front and rear vertical cross brushing, the total thickness of the brush is generally 1-2mm; If the coating has already cured, moisten it with water first when applying another layer. Special attention should be paid to the corner part of the wall to be treated into an arc type and then painted, and the painting can not be too thick (the total thickness does not exceed 2); The pipe through the wall should be sleeved with a casing, and the holes of the casing and the wall should be filled with a plugging king, and the waterproof material should be brushed to the height of the casing 10 and not too thick;

Clause. Fourth, pay attention to the position and height of waterproof painting. Ground; Generally, the wall is repainted and brushed 30 high; Paint the wall around the shower area 180 high or to the top of the wall; There is a bathtub where the upper brush is 30 higher than the bathtub.

Clause. Fifth, do a good job of water test. After the waterproof coating is painted to form a waterproof layer (about 24 hours later), the water storage is 20 high, and after 24 to 48 hours, see if the water is significantly reduced or go downstairs to see if there are wet water spots on the roof, and if not, it means that the waterproof construction is successful.

Clause. Sixth, the later decoration should do a good job of protecting the waterproof layer to avoid damaging the waterproof layer.

If you do the above six points completely, you will definitely be able to achieve the waterproof bathroom without any "wet".

Resurfacing floor tiles should be done to waterproof the floor. If you need to replace the original floor tiles in the bathroom, after chiseling off the original floor tiles, you must first level the ground with cement mortar, and then do waterproof treatment, so as to avoid leakage caused by uneven thickness of the waterproof coating. Before doing waterproofing, be sure to clean the ground and paint it 2 to 3 times with polyamide waterproof paint.

Be sure to do wall waterproofing. When the bathroom is bathed, it will splash water on the adjacent wall, and if there is no waterproof layer to protect it, the adjacent wall and the opposite corner wall are prone to dampness and mildew. Therefore, it is necessary to do a good job of wall waterproofing before laying wall tiles, and the wall should be waterproof with a height of 30 cm in the general waterproof treatment, but for non-load-bearing light walls, the whole wall should be waterproofed, at least to be meters high.

The details I told my dad that the base must be smooth and free of sand Made of polyurethane According to the instructions, the pipe is the key to brush more polyurethane. After the closed water test, it is OK if it does not leak.

Ground + wall, the wall is at least one meter, and the water is stored for 48 hours after the waterproofing is completed, and the owner downstairs is notified for acceptance.

Paint on the wall 1 meter 8 brush 3 times Don't be too thin Every time you have to dry every half a day, just do the next time you finish testing the water.

Prevent leakage. If you use gas, you must also pay attention to gas safety. Good ventilation.