External wall waterproof and moisture proof method, external wall waterproof and moisture proof
During the renovation or building of the house, we must pay attention to the waterproof and moistureproof of our outer wall. What is the waterproof and moistureproof of the outer wall ? I will introduce it to you. I have some good methods for waterproofing the outer wall. Friends We can refer to it, then how to do a good job of waterproofing and dampproofing the exterior wall, as well as paying attention to the techniques of waterproofing and moisture-proofing of the external wall and the precautions for waterproofing and moisture-proofing of the external wall.
First, the external wall waterproof and moisture-proof method
1. The inner wall should be waterproof first. After the outer wall is seamed, the outer wall waterproof material is painted, so that the outer wall does not seep, and the inner wall will be protected from moisture.
2, the family should pay attention to the use of water sources, do not always soak water, the house can be dampened with air conditioning.
3, the outer wall waterproofing must first clean the base layer, the surface should be compacted and flat, no loose, sanding, peeling phenomenon, so as not to affect the bonding strength, the base layer should be dry when applying waterproof coating.
4. After the completion of the grassroots cleaning process, the next step is to clean up the dead corners, which are the so-called yin and yang angles, construction joints, expansion joints and other important parts for treatment. In particular, the drain holes should be strengthened and need to be painted. 3 times waterproof primer.
5. In order to improve the adhesion between the waterproof membrane and the base layer, the primer can be repeatedly painted, uniformly coated, completely covered, and fully penetrated into the concrete base layer to improve the bond strength and shear strength. When bonding the coil, wait until the second coating is completely solidified before construction.
6. At present, the external wall structure has a block structure, a brick-concrete structure, and a cast-in-place reinforced concrete structure. The wall structure includes exterior wall external insulation and external wall insulation. When the exterior wall is waterproof, the waterproofing and moisture-proof treatment can be carried out from the inner structural surface of the wall. Since the vertical wall is a structure without water, the seepage is carried out from the back surface. Moisture proof is completely solveable, but it must be done on the structural surface. If it is internal insulation, the insulation layer must be removed and waterproofed.
7. Apply the first moisture-proof resin coating on the clean, smooth, firm and dry wall mortar surface. After about 3 hours, apply the second time. After the second moisture-proof resin is completely dried, it can be carried out. Construction of interior wall decorative layers such as wall paint and wallpaper. The specific number of coating passes and coating amount will depend on the actual conditions of the project.
Second, the external wall waterproof and moisture-proof precautions
1. The general owner is very easy to confuse the concept of moisture and waterproof. He often treats moisture and water as the same. He thinks that waterproofing is done with moisture. This is a relatively wrong understanding. We are protected from moisture (ie water vapor), and water is mainly protected against liquid water. The molecular density of the waterproof layer is that there is no way to prevent moisture.
2. The waterproof material selected should be a rigid waterproof coating product, because the rigid waterproof material can be tightly combined with the structural wall to withstand the penetration of the wall and the pressure of the external airflow.
The above is a good way to waterproof and damp our exterior wall, and the key points that we should do to prevent the external wall from moisture and moisture. There are also small series here to remind everyone to pay attention to the external wall waterproof and moisture proof which are easy to neglect. Attention, our decoration home network also has decorative information on the one hand, and everyone continues to pay attention to learn more.
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