Necessary knowledge for wall construction of old h

2022-07-22
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Clean the wall. There is a small white powder on the wall, which means that the salt in the wall is "separated out" during the drying process of cement. At this time, you can brush it off with a nylon brush or an iron brush. After observing for a few days,

1. Clean the wall. There is a small white powder on the wall, which means that the salt in the wall is "precipitated" during the drying process of the cement. At this time, you can brush it off with a nylon brush or an iron brush. After observing for a few days, you can confirm that there is no white powder precipitated anymore, and paint it after the cement wall is dry and polished

second, remove the peeling paint film. Remove the peeled paint film with a knife or iron brush, and then grind the surface with sandpaper

III. remove the wallpaper pasted with paste

IV. finish the surface. Fill the concave holes and cracks with soil knife, and then grind them with sandpaper after they are completely dry

v. treatment of wall lesions

VI. apply primer first. "Primer" coating is specially used for the wall surface that does not need special treatment. As for the wall surface that has problems, we must first select a special "primer" that specializes in this special problem

VII. Paint it again. It is usually painted

VIII. Brush from top to bottom. After the paint is stirred evenly with a wooden stick, the painting procedure starts from the ceiling and then goes down, so as not to cause the paint dripping from the ceiling to flower the finished wall

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