â—† Wall surface treatment
The wall surface treatment is to make the wall surface smooth, clean, dry and free of cracks, voids, and solid without dust. The function of the varnish and the sealer primer is to cure and protect the surface of the putty, and also to strengthen the alkali resistance of the wallpaper. The paint should be applied after the putty is completely dry. The wall treatment of the wallpaper-pasted wallpaper is almost the same as the wall treatment of the brush coating. Therefore, the brush coating wall is suitable for changing the wallpaper, but sanding treatment is required.
Cement brick wall: The wall surface is flat, flattened with putty, brushed with a thin varnish to be dried after the wallpaper can be pasted.
Gypsum board, plywood, and wood board: There are joints, so the joints are first patched and then grayed.
â—†The application procedure for wallpapering
First of all, according to the actual situation of the wall, the old wall surface approach is: first shovel the old wall to the bottom (or empty wall is easy to form an empty drum), water and electricity pipelines at the same time, the water and electricity pipeline slot should be bandaged to prevent Cracking, the bottom of the first wall paint (commonly known as the interface agent) to prevent putty and wall hollowing (this is very important), and then scraping putty two or three times (depending on the situation) too much can cause wall cracking (If the walls are too different, you can use gypsum for leveling). After drying, sand flat and brush varnish again.
The practice of the new wall surface is to complete the transformation of the water circuit first, and bandages are to be applied to the water and electricity pipelines to prevent cracking. The bottom of the wall should be first brushed with a wall (commonly referred to as an interface agent) to prevent hollowing of the putty and walls (this is very important). , And then putty to two or three times (depending on the circumstances) too much will cause the wall cracking, dry flat sand after the paint, brush varnish back again. Finally use wallpaper glue to paste wallpaper on the line.
â—† Treatment of damp walls
The wall of the room is damp and even moldy. At this time, anti-seepage liquid can be applied on the wall surface to form a colorless and transparent waterproof film layer on the wall surface, which can prevent the infiltration of foreign moisture, keep the wall dry, and then can decorate the wall surface. If the wall is damp, let the damp wall dry for a period of one to two months. Brush a layer of water-proof slurry mixed with cement on the wall to prevent moisture. Secondly, the wall pits are filled with gypsum putty. After drying, the wall surface is smoothed with sandpaper. Then, the primer can be coated with rollers on a dry clean wall twice, or sprayed.
â—† Wall construction requirements
Prior to wallpapering, the quality of grassroots processing shall meet the following requirements in accordance with the National Standard of the People's Republic of China: "Code for the Quality Acceptance of Building Decoration Engineering" (GB50210-2001):
1. The concrete or plastering wall of the new building should be painted with an alkali-resistant primer before scraping the putty.
2. The old wall surface should be cleared of loose old decoration before painting, and paint the interface agent.
3, concrete or plaster base layer moisture content shall not be greater than 8%; wood base layer moisture content shall not exceed 12%.
4, the base putty should be flat, strong, solid, no powdering, peeling and crack putty bond strength should be in line with "building putty" (JG/T3049) N-type provisions.
5. The flatness of the grass-roots surface, the verticality of the facade and the yin and yang angle shall meet the requirements of Article 4.2.11 Advanced Plastering of “Code for Quality Acceptance of Building Decoration Engineering†(GB50210-2001).
6, the base surface color should be consistent.
7. Apply a closed lacquer-coating base layer before applying the paste.
8. Don't forget to consider the environmental issues of using glue.
Wall construction paint coating cement decoration interior decoration
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