What is the cause of cracks in the wall? How to fix it?

After the renovation, the big stones in my heart also landed. However, if the surface is cracked, it is a very annoying thing, which not only seriously affects the aesthetics of the house, but also causes some security uneasiness. So what is the cause of wall cracking? How should the wall cracks be repaired ? Then follow the decoration home network Xiaobian to learn about the relevant content!

First, the main reason for wall cracking:

1. Concrete construction uses waste engine oil as template coating agent

2. The surface of the concrete is not pulled or the quality of the napped is poor.

3, masonry broken bricks on the wall

4, masonry 瞎 false seam

5, masonry hole defects

6, sloping top brick construction defects

7. Poor treatment of concrete and masonry interface

8, pipeline slotting fixed

9, the pipeline slot is not blocked direct painting

10, sintering masonry watering time

11, cracking around the larger box

12, the thickness of the plastering single layer is too thick or use the mortar king 13, dry high temperature season plastering surface is not cured and plastering finish surface slotted pipe

14, after the empty drum repair, secondary cracking, hollow drum

Second, the wall crack repair method

1, wall cleaning

Sprinkle water on the wall first, then wet the wall and then shovel, so that it is more labor-saving when shovel, remove the wall skin to expose the cement mortar wall or putty layer.

2, repair

After the old wall skin is removed, apply the interface agent on the wall surface, and pay attention to evenly. For cracks, special treatment should be carried out to cover the crack with kraft paper tape and white latex to prevent further cracking. In addition, it is necessary to level the uneven wall surface. Generally, the gypsum is commonly used, and the unevenness is not more than 0.5 cm, and then the patch: the non-bearing wall such as the general light body wall and the heat insulating wall needs to be applied.

3, putty putty ready to scrape putty. The quality of the putty is related to the effect of the construction. It is better to use a putty with a higher fineness and a harder texture. It is also possible to add a certain white latex to improve the hardness of the putty. After the putty has dried up, it needs to be polished on the wall. After polishing, you must thoroughly clean the wall to avoid too much dust and affect the adhesion of the paint.

4, the surface treatment should be painted on the wall. You can put a little more water when modulating the primer, which makes it easier to brush evenly. When painting, make sure that every part of the wall is brushed in order to ensure the effect of the construction. After the primer is completely dry, you can brush the topcoat. When brushing the topcoat, do not add excessive water. The rollers should not be too short, but they must be fine. The latex paint will dry 4 hours after painting, but do not scrub or touch the wall within 7-10 days.

The above is a detailed answer to the Xiaobian, I don't know if you are satisfied with the introduction of the decoration home network Xiaobian~ If you want to know more about the exciting content, please continue to pay attention to our decoration encyclopedia!

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