There are two types of insulation walls, one is an exterior wall insulation layer set up by an opener, and there is no need for the owner to worry about this. Some insulation layers extend into the interior, such as balconies and gifted equipment platforms, and should be considered when decorating. Another kind of insulation layer is the owner's own home decoration, so that the indoor insulation effect is better. Especially to the recent cold weather, if the home is a wall with insulation, it will undoubtedly be much warmer. No need to consume electricity or gas, you can maintain a constant temperature in the house for a long time. No matter what insulation wall is, it is flawed. For example, there is a problem of cracking of latex paint. Today we talk about the cause of cracking insulation wall and solutions.
Reasons for cracking insulation wall
The common cracks in the wall are mainly divided into the following two categories, one is temperature cracks, and the other is cracks caused by uneven settlement of the foundation.
First, temperature cracks:
Temperature cracks are the most common in a wall. Such cracks are common at the junctions of different materials, such as horizontal cracks at the intersection of a ring beam and a brick masonry. The general material has the performance of thermal expansion and contraction, and the structure of the house is deformed due to changes in the ambient temperature. The expansion coefficients of different materials are different, resulting in temperature cracks.
Solution:
1. There is no additional insulation layer on the roof without insulation. The roof panels are subject to more heat absorption by sunlight, and the addition of an air-insulating layer or the use of a heat-conducting material with a low heat-conducting property can effectively control the temperature rise of the panel. When the temperature of the panel is reduced, the temperature difference between the panel and the wall is greatly reduced, which can effectively prevent cracks in the top wall.
2. For existing temperature cracks without affecting the structural safety, after the cracks are stabilized, they can be blocked with mortar.
Second, the uneven crack caused by the foundation:
The crack caused by the uneven settlement of the foundation is that after the house is built, the foundation will generally sink. If the settlement of the foundation is not uniform, relative displacement occurs between the site where the settlement is large and the site where the settlement is small, and shear force and tension are generated in the wall. When the additional internal force exceeds the tensile shear strength of the wall itself, cracks are generated. And these cracks will increase with the uneven settlement of the foundation.
Solution:
1. When settlement settlement develops slowly and tends to weaken after settlement cracks occur, the cracks should be repaired after the cracks have stabilized. Repairs are generally treated with cement mortar, resin mortar caulking, or cement grouting.
2. When the settlement cracks develop rapidly and have an accelerating trend, temporary support measures shall be taken to reduce the basic load and reinforce the foundation and then repair it. Basic reinforcement is commonly used to increase the basic area method, pile foundation underpinning method, and grouting methods to change soil properties.
Three tricks to deal with the cracking of the insulation wall
The cracking of latex paint is caused by cracks in the wall's cement or the cracking of the wall's "insulation board" joints. It is not a matter of quality of the decoration, but an insurmountable defect in the construction. In order to pursue the best decorative effect, using decoration to make up for architectural defects, the decoration company's technicians come up with many ways to deal with the insulation wall cracks. You can choose according to your own actual situation and decoration budget:
1. After the wall surface is cleaned, first apply a layer of Dacron cloth, kraft paper or newspaper on the wall surface, and use the tension of the fiber to ensure the integrity of the latex paint film. This method is relatively simple and easy, but the effect is general.
2. Remove the insulation board on the surface of the wall, or remove the cement wall. Install a layer of gypsum board or “5 PCT board†on the outside of the insulation layer, and then do the latex paint on it. This practice can remove all irregular cracks, cracks are generally the joints between the plates, better handling. However, this method is expensive and difficult to construct.
3. Use a decorative material with elasticity. At present, on the wall surface treatment, there is a kind of “elastic putty†that can make up for the wall crack problem to some extent. Nippon Paint's "three in one" can also play a role in covering the small cracks on the wall. However, these materials have less "elasticity" and do not work on cracked walls.
In addition, some consumers simply remove the wall insulation. Although this method can be used once and for all, it will reduce the insulation and thermal insulation properties of the wall, so it is not recommended.
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