Guide: Waterproofing of bathroom wall usually, the height of waterproof layer should reach more than 25cm. In the shower area, especially the wall with shower, the waterproof layer should be 180cm. In fact, waterproofing and basic treatment are very important. Many people just pay attention to materials, the grass-roots treatment is not good, and even the best materials are empty. The base should be flat and dense, and the moisture content should not be too high (the specification seems to be less than 8%). Where nodes (pipes and flues) are added, an additional layer will be added locally. In fact, it is very useful to find the slope of the floor tile and mark it well. Bian Xiao, the decoration network, collects the waterproof knowledge of the super bathroom wall to share with you!
A, the bathroom wall waterproof height
The national standard for the waterproof height of the toilet is1.8m. The building has been waterproof, and the waterproof layer extends from the ground to the wall, which is 250MM higher than the ground. But the waterproof of the wall is basically not. According to the conventional bathroom, the height of the waterproof layer on the wall near the shower nozzle is not less than 1800MM, and the general thickness is not less than1.5 mm. After the waterproof project, the water storage experiment must be done for 24 hours.
Second, the bathroom wall waterproof practice
Ordinary residential toilets are small in place, and the pipes pass through the floor, so they are often waterproof with paint, and rarely with coiled materials. ? There are two kinds of waterproof coatings: synthetic polymer-polyurethane waterproof coatings (polyester cloth, glass fiber cloth, etc.). The curve needs)-polymer modified asphalt-S? b？ ■ Waterproof coating (polyester cloth, glass fiber cloth, etc.). )? Asphalt-based waterproof coatings are basically not used.
The general practice of polyurethane waterproof coating is as follows:
1. Tilt the ground in the direction of floor drain. Cement mortar or pisolite concrete can be used, but the surface should be smooth. The slope near the door is small, and the slope near the floor drain is large, depending on the specific situation.
2. The pipeline passes through the root of the floor to strengthen waterproofing. After the building sealant at the pipe root is sealed, cement shall be applied to smooth the feet, and glass fiber cloth reinforcement layer 1~2 shall be applied when waterproof coating is applied. The same measures are taken near the floor drain.
3. The wall should be clean and smooth, free of floating ash and small particles, and the junction between the wall and the ground should be painted into the original angle or slope angle. Stick glass fiber cloth reinforcement layer 1~2 when brushing waterproof paint.
4. The total thickness of polyurethane waterproof coating should be greater than 65438 0.5 mm. It cannot be determined by the number of passes. Brush the pipe root and corner strengthening layer first, and then brush and scrape it in a large area after drying at room temperature for 4 hours. There should be no leakage, scratching or blistering. Brush a large area for 24 hours, and then brush the next layer after curing.
5. Brush the facade first and then the plane, and the next brush direction is perpendicular to the previous one. When the coating is semi-solidified, coarse sand particles will be dragged to facilitate the combination with cement mortar in the future.
6. The waterproof layer on the ground outside the bathroom door should be brushed 300 wide. The waterproof layer of waterproof floor should be 200m higher than the ground, and the waterproof layer of bathroom wall with shower should be 1800 (L8m higher than the ground (L8 suggests the whole wall is waterproof).
7. There is also the practice of riser (see L8 old post for the riser method). It is suggested to do riser after waterproofing, and then do local waterproofing. If the waterproof layer on the ground is not destroyed, the closed water experiment can be omitted.
Modern Jian' ou bathroom
Construction of coating waterproof layer
The general thickness of HB waterproof coating for kitchen and bathroom is 1. 1mm, 1.5mm and 2.0 mm, and coating construction can be carried out in two or three times according to different design thicknesses.
1. Open the packaging barrel and mix well first.
2.？ First coat: use plastic or rubber scraper to evenly coat the prepared HB waterproof coating for kitchen and bathroom on the surface of the base coated with primer, with a thickness of 0.6mm and an even coating amount of 0.6 ~ 0.8 kg/m2? It is advisable to operate the wall first and then the ground, and retreat from the inside out.
3. Second coating: When the first coating is cured and not sticky, the second coating waterproof construction shall be carried out according to the first material construction method. In order to make the film thickness uniform, the scraping direction must be perpendicular to the first scraping direction, the scraping amount is slightly smaller than the first scraping, and the thickness is 0.5mm? Suitable.
4. Third coating: After the second coating is cured, the third coating is carried out according to the previous two construction methods, and the coating amount is 0.4 ~ 0.5k/m2? Appropriate (such as design thickness 1.5mm? Above, you can draw for the fourth time).
5. Remove the coarse sand adhesive layer: In order to protect the waterproof layer, the stone slag adhesive layer should not be removed from the ground waterproof layer, and the adhesive layer can be 1: 1? 108? Should brush glue or CMB mucilage. After the construction of waterproof protective layer on the ground, roll-coating waterproof coating on the waterproof layer on the wall. When not solidified, 2 ~ 3 mm should be removed from the surface. Sand to increase its adhesion to the surface.
6. Protective layer or decorative layer structure
Waterproof layer details:
1. Pipe roots and corners
1-floor,? 2- leveling layer (pipe root and corner radius R= 10mm? Circular arc, the pipe root against the wall shall be leveled with a slope of 5%).
3— Waterproof additional layer (width 150mm, corner height 100mm, pipe root flush with standard ground)? 4- Waterproof layer? 5— Waterproof protective layer? 6- Ground surface layer
2. The specific practice of floor drain
1-template? 2- leveling layer (pipe root and corner radius R= 10mm? Arc) 3— Waterproof additional layer (width 150mm,? The pipe root is flush with the standard ground)? 4- Waterproof layer? 5— Waterproof protective layer? 6- Ground surface layer
3. Details of the door
1-floor? 2- leveling layer (radius R= 10mm corner? Arc) 3— Waterproof additional layer (width 150mm,? Height and ground)? 4— Waterproof layer (250mm outside the wall)? 5— Waterproof protective layer? 6- Ground surface layer
Acceptance of coating waterproof layer
According to the construction technology of waterproof coating, each working procedure should be carefully checked and accepted, and recorded. The construction of the next working procedure can only be carried out after it is qualified. After the waterproof layer is completed and worked hard, the coating quality shall be fully accepted, and the coating shall be full, uniform in thickness, tightly sealed, and the thickness shall meet the design requirements (slice inspection). The waterproof layer has no defects such as bulging, cracking and warping. After inspection and acceptance, the water storage test can be carried out (the water surface is 20mm above the standard ground for hours? There is no leakage, is there? Record well, and the protective layer can be constructed.
Finished product protection
1. When coating waterproof layer, the operator should wear flat shoes, and put on pipe fittings, sleeves, floor drains and fixing clips on the rib surface and wall surface to avoid damage or displacement. When applying waterproof coating, it is not allowed to pollute the electric boxes on the walls, floors, doors and windows and other parts. Heating and sanitary pipes, sanitary appliances, etc.
2. After the construction of each coating waterproof layer is completed, it should be strictly protected, and eye-catching no entry signs should be set at the door of the kitchen and bathroom. Before the construction of protective layer, no one is allowed to enter or pile up sundries on it, so as not to damage the waterproof layer.
3. Before waterproof construction, protective measures should be taken to prevent sundries from entering, ensure smooth drainage and qualified water storage, and clean up the floor drain.
4. During the construction of waterproof protective layer, mortar shall not be mixed on the waterproof layer. When laying mortar, shovel shall not touch the waterproof layer. Care should be taken not to damage the waterproof layer.
Quality problems that should be paid attention to
1. There are bubbles in the coating waterproof layer: the main reason is that the base layer is not cleaned cleanly, the coating is uneven or the leveling layer is wet, and the water content is higher than 9%; The water content test was not carried out before painting, which led to empty drum, and in serious cases, large area bulging. Therefore, before coating the waterproof layer, the base must be cleaned and the moisture content should be appropriate.
2. After the construction of the ground surface, the water storage test was carried out, and leakage occurred: the main reasons were that the pipe fittings and floor drains passing through the ground and wall were loose, the smoke exhaust duct sank, and the waterproof layer was torn; Other parts were not cleaned due to loose pipe root or weak adhesion. Clean up the gap, if the sealing lap length is not enough, and the paste is not tight; Waterproof protective layer may damage the waterproof layer: the first water storage test was not deep enough. Therefore, in the process of construction, we should carefully operate relevant procedures and strengthen our responsibilities? Heart, in strict accordance with the technical standards and construction specifications. After coating waterproof layer construction, conduct the first water storage test, and store water? The depth must be 20mm higher than the standard ground, 24h? Until there is no leakage, if there is leakage, it can be repaired according to the specific part of the leakage, or even completely reworked. After the ground construction, conduct the second water storage test for 24 hours? No leakage is the final qualification. Fill in the water storage inspection record.
3. Poor drainage on the ground: The main reason is that the ground and leveling layer did not find the slope according to the design requirements during construction, resulting in inverted slope or uneven water storage. Therefore, before the construction of coating waterproof layer, check whether the slope at the grass-roots level meets the requirements. If it does not conform to the design, it should be treated before waterproofing, and the slope should be found according to the design requirements during surface construction.
4. After the second water storage test, the ground has passed the acceptance test, but the leakage phenomenon is still found after the completion of use: the main reasons are that the drainage of sanitary ware is not tightly connected with the pipe socket, and it is not tightly sealed with building sealant after the connection, or the fixing screws of sanitary ware pass through the waterproof layer and are not treated. After the installation of sanitary ware, it is necessary to carefully check whether each interface meets the requirements before proceeding to the next process. After installation of sanitary ware, attention should be paid to the protection of finished products.