At present, the walls of many new houses are new insulation walls with insulation layers. When painting such walls, it is easy to crack the latex paint. Such problems are inevitable. What should be done when such a situation arises?
Latex paint cracking is caused by cracks in the cement of the wall or cracks in the joints of the "insulation board" of the wall. It is not a quality problem of the decoration and is an insurmountable defect in the building. To make up for this architectural flaw, we can choose according to the actual situation of our home and the renovation budget. Specifically, we can start from the following aspects:
1. After the wall substrate is cleaned, first put a layer of good 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. PS: This method is relatively simple and easy, but the effect is average.
2. Remove the insulation board on the wall surface, or remove the cement wall surface. Install a layer of gypsum board or “five PCT board†on the outside of the insulation layer, and then make latex paint on it. This method can remove all the irregular cracks, and the cracks are generally the joints between the plates, which is better to handle. However, this method is costly and difficult to construct.
3. Use decorative materials with elasticity. At present, in the treatment of wall substrate, there is a kind of "elastic putty" which can compensate for the wall crack problem to some extent. However, the "elasticity" of these materials themselves is small and does not work on walls with cracks.
4. Some owners simply remove the insulation layer of the wall. Although this method can be done once and for all, it will reduce the insulation and heat insulation performance of the wall, so it is not recommended.
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