Before applying the wallpaper, the wall treatment must be smooth and clean. If there is any irregularities or cracks on the wall, remove it with a blade and smooth it with a putty. Then dry it with sandpaper and smooth it. When using a large area of ​​wall, it is best to use old powder and cooked powder to make the wall more solid. If the seam can be used gypsum powder add a little oil to do putty. The best practice is to brush the walls up to two passes of varnish to do wall protection and protect against moisture. After drying, lightly sand it again with sandpaper, do not brush more oil, which will cause the wall surface to be too smooth, resulting in the wallpaper being stuck loose and shrinking during the drying process to produce seams!
First, the main process of plasterboard surface wallpaper
Cleaning, filling gaps, sandpaper polishing - seams at the seams - looking for putty, sandpaper polishing - brushing at the end of rubber - wall leveling line - wallpaper brush adhesive - primary brush adhesive - wallpaper paste - Patchwork, lap joints, pairs of flowers - Crush adhesives and air bubbles - Wiping out the extruded glue - Cleaning and trimming
Second, the wall surface treatment before paste wallpaper
1. The wall surface must be treated before pasting the wallpaper. The wall surface treatment is to make the wall surface smooth, clean, dry and crack-free, solid and free of dust.
2. If the wall of the cement brick wall is flat, use a putty to flatten it and apply a thin varnish to dry it. Gypsum boards, plywood, and planks have seams, so they should be patched and then ashed.
3, the function of varnish and sealer is to solidify and protect the surface of putty, but also can strengthen wallpaper anti-alkali function. The paint should be applied after the putty is completely dry.
4, wall treatment paste wallpaper and brush coating wall treatment is roughly the same, so the brush coating wall is suitable for changing wallpaper, but need to do a good sanding.
Third, the wallpaper paste construction requirements
Prior to the application of wallpaper, the quality of grassroots treatment shall meet the following requirements in accordance with the provisions of the National Standard of the People's Republic of China: Quality Acceptance of Building Decoration Engineering (GB50210-2001):
1. The old wall surface should be cleared of loose old decoration layers before painting the wallpaper, and paint the interface agent; the new building's concrete or plaster base wall should be painted with an alkali-resistant sealing primer before scraping the putty.
2, the base surface color should be consistent. The moisture content of the base layer of concrete or renders shall not be greater than 8%; the moisture content of the wood base shall not exceed 12%. The flatness of the grass-roots surface, the verticality of the facade and the angle of the yin and yang should meet the requirements for advanced plastering of the “Code for the Quality Acceptance of Building Decoration Engineeringâ€.
3. Apply a closed lacquer coating brush base before applying wallpaper. The base putty should be flat, strong, firm, non-powdered, and the bond strength of the peeling and putty should be in accordance with the regulations for “Building Interior Puttyâ€.
4. Finally, don’t forget to consider the environmental issues of using glue on wallpaper.
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