Wall decoration has a history of nearly one hundred years. People originally used murals and tapestries. By the end of the 19th century, printing and embossing papers began to appear. At the end of the 1950s, PVC plastic coated embossed wallpapers entered the market, followed by embossed wallpapers and circular screens. Wallpaper has also debut.
Nowadays, with the advancement of social science and technology, wallpapers suitable for indoor wall decoration can be described in a variety of ways. The variety of colors is also dazzling. According to a wallpaper sales person, the wallpaper is divided into different types according to its substrate: paper wallpaper, PVC wallpaper, foam wallpaper, non-woven wallpaper, fabric wallpaper, cloth-based wallpaper, gold platinum wallpaper, special wallpaper, and so on.
The appearance of wallpapers has opened up more space for home decor and design. If the interior wall is treated as a gift box to be packaged, then the wallpaper is like a colorful wrapping paper, allowing the owner to fully express his artistic creativity and create a colorful atmosphere in the simple and rough concrete room.
â– wallpaper replacement process
1 Sweep the grass and fill the gap
Gypsum board seams need to be affixed with joints and putty.
2 Putty sanding
When processing at the grassroots level, it must be cleaned, smooth and smooth.
3 Brushing agent
Moisture-proof coatings should be painted evenly, not too thick.
4 Paper cutting and coating
The vertical width of the wallpaper can be marked on the wall by the plumb line. Using a gluing machine to glue on the back of the wallpaper, so that it is more uniform than manual glue, and at the same time using a roller brush to apply glue directly on the wall.
5 on the wall paste, patchwork, lap
Stick the wallpaper on the wall, align the edges, and use a rubber roller to flatten the wall and press the adhesive bubble.
6 Finishing
Use a wallpaper knife to cut off excess wallpaper from ceilings, wall skirts, windows, etc., and clean the glue.
â– Preparation
Paint walls need to be shoveled out of the original grassroots
Today, most families use paint as the wall. If you want to change to wallpaper, can you directly construct it on the original wall? Li Dongsheng, deputy general manager of the Beijing branch of Beijing Hongnai Jiaye Building Material Co., Ltd. introduced that the wallpaper is not suitable to be directly attached to the old wall of the brushed paint, because after a few years, the paint will be easy to blistering, peel off, and stick directly. Wallpaper will produce an unsightly effect.
The specific method of replacement is as follows:
1. First soften the wall base putty with water.
2. Scrap the original grassroots.
3. Inspect the wall for cracks and potholes, treat with size fillers and grind them with sandpaper. Pay attention to whether the yin and yang angles are vertical.
4. Remove the attachments, scrape the putty 1 to 3 times on the base layer, each time the thickness is less than 0.5mm, each time is smoothed with sandpaper, and the surface is cleaned with gauze.
Warm water soaked to remove old wallpaper
If there are wallpapers in the walls of your home, what should you watch out for when replacing new wallpapers? Li Dongsheng said that most of the wallpapers used in the past belonged to PVC wallpapers, also called plastic wallpapers. If new wallpapers are replaced, this old wallpaper must be removed.
Plastic wallpaper is generally divided into two layers, the surface is a plastic layer, the substrate is a paper base layer. The specific method of replacement is as follows: 1. The plastic layer on the surface is scraped off with a toothed scraper so that the water can penetrate into the inner layer smoothly.
2. Use a sprayer to spray warm water onto the paper substrate, soak the wallpaper, soften the adhesive, usually for more than 2 hours.
3. Check whether the wallpaper base and wall can be peeled off smoothly. If it can, remove it.
4. Use sandpaper to remove any remaining debris from the wall.
5. Inspect the wall for cracks, potholes, and remove attachments. The treatment method is the same as the paint wall surface.
Tip: There is a damp spot on the part of the wall. Do not attach the wallpaper. Treat it after removing the root cause of the dampness.
3 ways to determine wallpaper usage
According to professionals, there are roughly three methods for calculating the amount of wallpaper: First, the wall area (length × width) is multiplied by 1.1 times after calculation; second, the door, window, and heating cover are all counted when calculating the wall area; It is calculated as 3 times the floor area.
When estimating the wallpaper used in a room wall, the area of ​​a room in general is used as the area of ​​a roll of 3 ÷ rolls of paper = the number of rolls generally required (a roll of wallpaper is generally 53 cm wide, 10 meters long, and an area of ​​5.3 square meters). For security reasons, add one more volume based on the number of rolls required. However, due to the differences in the structure of individual houses, when the actual required quantity is determined, it is still required to make on-site measurements and confirmation by sales personnel or professionals.
Tips: When buying wallpapers, make sure that each model purchased is a production lot number. Adhesives are best chosen for brands with quality assurance and reputation. Before starting work, be sure to check each roll of wallpaper to see if there are any defects or obvious color differences.
â– Key points
After the renovation project is basically completed, doors and windows closed, the ambient temperature should not be lower than 10 °C, relative humidity should not be greater than 60%. After the paste is complete, doors and windows should be closed for 1 to 3 days, completely dry and open the doors and windows for ventilation.
2. The base layer moisture content should be less than 8%.
3. The wall surface roughness can be checked with a 2 meter ruler, and the height difference cannot exceed 2 mm.
4. When the seam is stitched, first pattern and back seam, make the top and bottom pattern fit. General paint wallpaper does not need to spend.
5. It is forbidden to join seams at the corners of the sun. It is best to wrap the corners at an angle of 20 mm.
6. It is best to have a work clothes or apron so as not to stain the clothes.
7. When constructing, first paste 3-5 pieces of wallpaper to confirm that the product has no quality problems and continue construction. If there are obvious quality problems such as color difference, construction should be suspended, and timely contact with the dealer to avoid blind construction and cause greater losses and disputes.
8. If there is a wallpaper with a base surface phenomenon, a base color or base oil similar to the color of the attached wallpaper should be painted on the base surface to ensure that the surface color of the wallpaper is pure and true.
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