Choosing a waterproof coating does not mean that the waterproofing of the home is foolproof. As the saying goes, "three-point material, seven-point construction", if there is a mistake in the construction, it will cause a lot of trouble. Therefore, it is necessary to understand the standard process of waterproof coating construction, whether it is self-installation or construction, can minimize the risk of water leakage.
The most important guarantee in the home improvement process is safe work, such as waterproofing, circuit installation, water installation. Home improvement waterproof work must first purchase high-quality waterproof coating, and then carry out construction.
I. Standard construction guarantee quality waterproof coating construction process
Choosing a waterproof coating does not mean that the waterproofing of the home is foolproof. As the saying goes, "three-point material, seven-point construction", if there is a mistake in the construction, it will cause a lot of trouble. Therefore, it is necessary to understand the standard process of waterproof coating construction, whether it is self-installation or construction, can minimize the risk of water leakage.
1. Construction preparation: do a good job at the basic level
Waterproof base layer requirements: Before the waterproof construction, the base layer treatment of the wall and the ground should be done well, and the surface of the base layer should be firm, without cracking, chalking, peeling and drumming. At the same time, the surface of the base layer must be clean, free of dust, release agents and other smudges that affect the adhesion of the paint.
Base treatment method: Generally, the base surface is carefully cleaned to remove floating dust, and cement agglomerates and loose base layers are removed; special treatment is applied to the roots, drainage holes, yin and yang angles, and voids left after the hydropower reform of the wall surface, at the yin and yang corners. It should be smeared in a circular arc (or V shape). Uneven, cracked parts need to be repaired and leveled.
2, construction preparation: proportionally blending waterproof coating
In the past, waterproof materials only needed a simple brushing. Now the new waterproof coatings are mostly two-component or even three-component. Therefore, before construction, you need to know how to allocate, how much is the proportion of the deployment. If it is not proportioned, the formulated waterproof coating may not achieve the original effect.
3, painting method: first wall behind the ground
When the waterproof coating is applied, it is similar to the general liquid paint. From the bottom to the top, the wall is painted first. When using, if there is air bubbles in the slurry, you need to brush the bubbles, and there must be no bubbles. The first pass needs to be applied in only one direction, and the second pass in the opposite direction. The interval between the first pass and the second pass is preferably about 4-8 hours.
4, special treatment: the caisson treatment of the bathroom needs to be backfilled
Many sanitary rooms generally do caisson, so they need to be backfilled. Before backfilling, it is generally necessary to do a waterproofing, and then do backfilling after the water shut-off test. After backfilling, leveling, you need to do another layer of waterproofing.
5, construction standards: waterproof height, thickness indicators
In general, the bathroom waterproof is 180 cm high, and the non-shower wall should not be less than 30 cm in principle. However, in order to enhance the waterproof effect, it is recommended to achieve a uniform height of 180 cm. In addition, for lightweight wall and self-built lightweight wall for toilet room renovation, it is recommended to have a waterproof height to achieve the top. In terms of thickness, the waterproof coating must be brushed to the national acceptance specification of 1.5 mm thick.
Second, the acceptance test is indispensable for waterproof construction acceptance method
Once the waterproof project is leaked and repaired, the amount of work is very large. For example, the bathroom is waterproof and repaired. First, the wall tiles and floor tiles should be knocked off, the water should be re-made, the wall should be re-installed, and the toilet, shower room and ceiling should be reinstalled. It is a two-pass project. Therefore, it is very important to check the quality of the waterproofing project and to do the check.
1. The water shut-off test is indispensable. The closed water test is an important task of waterproof inspection. For the original waterproof layer, through the closed water test, it can be understood whether the waterproof layer is in good condition, whether it needs to be repaired, and whether it is necessary to redo the waterproof layer. For the new waterproof layer, it can be used to check whether the waterproof construction is qualified.
2. The general practice of closed water test. The water-tight test must be done after the waterproof coating has dried out. First, put the prepared sand into a plastic bag, tightly block the floor drain, prevent the stored water from running away; then the door may be filled with water. Block the cement; then release the water, the water should be soaked all the ground of the test water test, usually 10cm is enough, if the water is afraid to evaporate in the next 48 hours, generally put 20cm.
3. Judging criteria for closed water test. The closed water test time, at least 24 hours in summer and at least 48 hours in winter, during this period of time, observe whether there is a significant drop in the water surface, especially whether there is leakage on the roof of the living room downstairs to check whether the waterproof construction is qualified. The light wall shall be tested for water spray, and the water shall be sprayed continuously from the top to the bottom for 3 minutes on the wall. After 4 hours, the other side of the wall will be observed for seepage. If there is no penetration, it can be considered as waterproof construction acceptance. qualified.
4. Operation details of the closed water test. Pay attention to the following points when doing the closed water test: first, the ground leakage must be blocked tightly. If the terrain is the same as blocking the cement at the door, the cement must be drained after the cement is dried. Secondly, when the water is discharged, the water column is directly in contact with the ground. A basin or a lid to prevent the water from being too strong to damage the waterproof layer.
5. Disposal methods for unqualified water closure. If the water shut-off test is not closed, the waterproofing project must be redone as a whole and then re-accepted. Other constructions can only be carried out after acceptance.
6, understand the warranty period of the house waterproof. The waterproofing of general houses is carried out by the decoration company. According to Article 32 of the “Management Measures for Residential Interior Decorationâ€, under the normal use conditions, the minimum warranty period for residential interior decoration works is two years, and the kitchen with waterproof requirements The bathroom and exterior walls and anti-leakage are for five years. Therefore, if the house leaks within 5 years, you can ask the decoration company to ask for responsibility.
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