Some things we need to know about how to shovel the old wall skin to be qualified

Shovel work is one of the concealed works in decoration, and its purpose is to lay the foundation for the upcoming decoration. So how to shovel the old wall is qualified? This should be distinguished according to the actual situation of the wall. The standards for shoveling out wall skins made of different materials in different years are different, and only when the wall skins are shoveled out according to the corresponding standards can they be considered qualified. Next, let's learn about the different standards of shoveling wall skin!

If the wall has been brushed with putty powder, how to shovel the old wall skin? The first step is to shovel putty, which is a very important substrate. Inferior putty lacks viscosity and poor water resistance, which will make the paint film peel off, so shovel it to the original bottom level. Then check whether there are cracks, uneven pits or other sundries. If there are, level the sundries and uneven positions. If the wall is not painted, how to shovel the old wall skin? It is necessary to sweep away the sand and gravel falling from the cement surface to see if there are cracks or other irregularities or sundries.

If it is an old house that has lived for a long time, how to shovel the old wall skin? In the wall decoration of some old houses, it is difficult to shovel off the old wall skin. How to shovel the old wall? First of all, check whether the phenomenon of wall hollowing and falling off is serious. Don't shovel if it's not serious. Water the old wall when the shovel can't move. If you can't shovel, don't shovel, because the waterproof layer of the wall is still very good at this time. There is also a second-hand house with a long history. The interior wall is yellow mud on red bricks. In this case, how to shovel the old wall skin? If the water resistance of the red brick is acceptable after the putty powder on the surface is shoveled off, it is suggested to remove the yellow mud layer and reinforce the inner wall with cement again. If the red brick is of poor quality and easy to absorb water, it is not recommended to dismantle it. Therefore, in the process of repainting, it is easy to cause the wall of the neighbor's house to be moldy, which in turn leads to greater subsequent contradictions.

So how to shovel the old wall skin is qualified. There is really no uniform standard. It is necessary to repair the wall according to the actual situation of the house, and refer to the corresponding standards according to different actual conditions to avoid the worries of the wall!

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