What is the best way to repair cracks in the wall?
Paint the wall: this method is more suitable for small cracks and falls off.
Plastering scraping: suitable for small cracks and peeling walls. First, the cracked part can be scraped off and cleaned, and then the plaster can be scraped with a putty knife. After plastering is dry, apply latex paint.
Putty: Before repairing, it is necessary to clean up the cracked and protruding places and their surroundings, then fill the gaps with putty and smooth them out, and then paint the walls one and a half days later.
Professional treatment: this method is suitable for large cracks or large areas, and professionals need to use special tools for operation and treatment.
Paint or wallpaper: If there are cracks in the wall, you can cover them with paint or wallpaper.
Causes of wall cracks:
1, cracks caused by different temperature differences
Generally, the splayed and horizontal cracks we see are mainly caused by different temperature differences, because many houses are now built by combining reinforced concrete and brick walls, and their respective expansion coefficients are different, resulting in different tensile stresses under the same temperature change, resulting in wall cracking. This problem will not occur when setting expansion joints in general construction.
2. Cracks caused by uneven settlement
In the process of long-term use, if the foundation is not uniform or the bottom structure is unstable, there will be some settlement under the downward force of the house. The uneven settlement in different areas will destroy the rigidity of the house and produce problems such as ground, level and inclined cracks.
3. Cracks caused by insufficient durability of brick masonry
Brick-concrete structure of the house is not very strong, so this structure is generally not used in high-rise buildings. In buildings with high floors, cracks are easy to occur in weak parts of wall brick masonry under the condition of excessive load.
4. Cracks caused by decoration materials
Decoration materials will also cause cracks in the wall under the condition of improper construction, but such cracks generally exist in the wall, which is also the cold and hot deformation caused by temperature difference, and such cracks generally do not have a safety impact.
5. Cracks caused by comprehensive reasons
Cracks in the wall are sometimes caused not only by one factor, but also by several problems. In this case, if we want to remedy them, we must investigate the problems one by one and implement remedial measures according to the situation. Of course, the most important thing is that the house should be well constructed in the early stage of construction in order to better avoid cracks.