Relevant national legal basis:
1, according to Article 7 of the Measures for Quality Assurance of Housing Construction Projects:
Under normal use, the minimum warranty period of building construction works is: roof waterproofing works, leakage prevention of bathrooms, rooms and external walls with waterproof requirements, which is 5 years.
2. According to the second paragraph of Article 40 of the Regulations on Quality Management of Construction Projects:
Under normal use conditions, the minimum warranty period of construction projects is: roof waterproofing works, leakage prevention of toilets, rooms and external walls with waterproof requirements, which is 5 years.
Waterproofing in engineering mainly refers to water prevention and visible running water. A small amount is waterproof, protecting the building from water vapor and moisture. The main materials in this respect are coiled materials, polyurethane and so on. The construction requirements are high and the technology is complex.
Waterproofing in home decoration refers to common sense, waterproof materials and waterproof technology related to family life. Including but not limited to waterproof and moisture-proof treatment of roofs, bathrooms, balconies, external walls, kitchens, basements and swimming pools. This subdivision is taking shape, with relatively low construction requirements, popularization and strong practicability.
Extended data:
1, waterproof precautions:
Waterproofing is a very important link in family decoration. Like other concealed works, it is easy to be ignored by the owners when decorating. Under normal circumstances, the floors of bathrooms, bathrooms and kitchens in buildings are waterproof layers, which are easy to be damaged when redecorating the floors. If it is not repaired in time, it will leak water in the future and endanger the neighborhood.
Therefore, attention should be paid to protecting the waterproof layer when decorating. If it is damaged carelessly, it should be repaired in time to avoid leaving hidden dangers.
2. There are two main waterproof materials for home decoration in the market:
One is JS waterproof latex, which has high grade and good effect. This coating is simple in construction, low in price, more suitable for home decoration and will not be wasted. Another advantage is that you can directly lay tiles or spray paint on the waterproof layer after waterproofing, and you don't need to be a protective layer of cement mortar, which saves time and labor and costs.
The other is nano-silicon waterproof agent, which belongs to nano-silicon series waterproof coating. This kind of coating has good waterproof effect, but its price is higher.
3, do waterproof construction:
The first step: treat the grassroots first. Remove the original decorative materials, clean up the eluvial soil and cement, and require the surface to be flat and dry.
Step 2: Brush waterproof paint. Brush it once on the waterproof base, and repeat it after drying (about 2-4 hours) to complete the waterproof treatment. Waterproof coating should be painted evenly, and there should be no brush leakage, bulging and falling off, otherwise the waterproof effect will be affected.
A layer of glass fiber cloth can be laid at the corner of yin and yang and the root of the pipeline for reinforcement. If you choose polyurethane as waterproof coating, you can brush it for 2-3 times repeatedly. Polyurethane coating itself can form elastic protective film and has certain tensile properties. In order to improve the waterproof effect, a layer of glass fiber cloth can be laid, but the cost will increase.
Step 3: Do closed water test, which is an important means to test indoor waterproof quality. After the waterproof project is completed, seal the door and drain, and fill the room with water to a certain level. If the liquid level does not drop significantly within 24 hours, it is qualified.
After the closed water test is completed, a protective layer of cement mortar should be coated on the waterproof coating, and care should be taken not to destroy the waterproof coating. After the cement mortar protective layer is dry, it can be decorated normally by laying wall bricks or painting.
References:
Baidu Encyclopedia-Housing Construction Quality Warranty Measures Baidu Encyclopedia-Construction Engineering Quality Management Regulations Baidu Encyclopedia-Waterproofing