Very often in the walls of multi -apartment or private houses there are cracks. This is due to their precipitation, and it does not depend on whether the new house or long-built, as well as because of the incorrect construction technology. Before you close the crack, it is necessary to carefully examine its length and depth. After all, the way of sealing will depend on its size.
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To repair the vertical crack, you first need to knit the corners, then clean the crack well and treat it with a primer. After that, it is blown out with mounting foam and sealed with cement mortar.
If a deep horizontal crack has formed, then the use of foam here will not help. In order to prevent subsistence at home, it is necessary to crack the support in the crack. For this, cement is usually used, which after setting becomes a strong basis. Experts advise using special glue on a cement basis. It is quite reliable and is well fastened with the walls.
A small thin gap after processing with a primer can be sealed with a sealant. Then a reinforced tape is superimposed on top and covered with putty. When the gap is formed in the plaster, it is covered with a small amount of putty, and rubbed with grouting.