Knowledge expansion:
1. About wall treatment:
A, joint leveling: If there is a joint on the wall, it needs to be leveled with putty first, and the putty for joint repair should be added with more white glue (vinyl acetate resin), and then leveled after joint repair, and then the basement membrane is brushed, and wallpaper is pasted after the film is formed, such as gypsum board, plywood and joinery board.
B, flat: flat walls, with putty, with putty only need to add a small amount of white glue, and then brush the basement membrane to paste wallpaper, and uneven walls such as cement walls and brick walls need to be leveled with putty;
C, floating ash removal: there is unstable powder or dust on the wall surface, which should be polished and removed. After leveling, the basement membrane can be applied to paste the wallpaper, which is necessary for the lime wall;
D. Sanding: Too smooth walls are not easy to absorb glue, and then the strength will drop. Wallpapers, such as paint and painted walls, can only be pasted after sandpaper is polished.
E. Coating base film (or finishing): The base film can form a protective film between the wall and the wallpaper, which can not only firmly protect the wall, but also prevent moisture, salt and alkali from infiltrating and corroding the wallpaper and wall covering. The product itself also has mildew-proof function, which can effectively protect the decoration materials from mold corrosion;
2. About the preparation of glue for wallpaper:
A. Composition of water: Glue is generally made of wallpaper rubber powder and white glue, with proper viscosity and easy brushing. The viscosity is adjusted by the amount of water added. The wallpaper powder is natural starch, and the white glue is synthetic resin (vinyl acetate resin). In order to ensure a good wallpaper paste effect, different amounts of white glue are often added according to different wallpapers.
B, the wall covering of cloth base glue is thicker, and the glue distribution is thicker than other wallpapers. For products under 65,438+05 ounces, white glue and wall powder are enough. For products over 65,438+05 ounces, wall covering special adhesive can be used, and the construction amount is 5 square meters per kilogram, which can be directly coated on the wall and the back of wall covering with a roller brush.
C, glue reference: add 4 liters of water to a bag of wallpaper powder, stir it into glue, and then add white mucilage to get paper wallpaper (paper base) with sticky surface. Wallpaper powder: white mucilage 1 bag (160g): 1 can (800g). Thick adhesive (paper-based) wallpaper with non-woven wall paper tape gold foil wallpaper rubber powder:.
Wallpaper glue powder: white glue 1 package (160g): 3-4 cans.
3. Use of scraper and short brush:
A. After the wallpaper is pasted on the wall, it must be scraped flat to drive out bubbles.
B. leveling tools: a. plastic scraper B. broad-faced short brush.
C, general adhesive wallpaper is scratch-resistant and washable. You can gently scrape the surface with a "plastic scraper" to drive out bubbles. If a small amount of extra glue is driven out of the surface, it should be wiped clean with a wet sponge immediately, and the scraper should not be too hard, otherwise it will easily scratch the surface, resulting in fading, reflection and obvious seams.
D, the surface of high-grade textile wall covering is easy to be damaged, so it can only be lightly brushed with a short brush, and the glue should be appropriate. Never drive the glue out of the joint and pollute the surface, otherwise it can't be treated.
E, paper wallpaper is very delicate, only short brush can be used to avoid glue touching the surface. If you accidentally touch the surface, you should clean it immediately. Otherwise, the glue will not come off after drying, which will cause the defect of color difference.
F, any wallpaper construction, glue should not pollute the wallpaper surface, is the most perfect construction technology.
4. Before construction, brush the basement membrane on the wall. Three advantages:
A, convenient to change the wallpaper in the future!
B, improve the waterproof and mildew-proof effect!
C, acid and alkali substances oozing in the wall! The wallpaper construction seems simple, but the actual operation is not so easy, which involves practical problems such as seams, collocation and loss.