Wall surface requirements when wallpaper is pasted
Today, wallpaper is widely used in home decoration. Before applying the wallpaper, it's important to properly prepare the walls. If the wall has been exposed for too long, it's recommended to use a special fungicide to eliminate any mold. Additionally, if the adjacent room is a bathroom, the interior walls must be treated with a waterproofing agent. Otherwise, prolonged moisture can cause the wallpaper adhesive to lose its effectiveness. Before pasting the wallpaper, the wall surface needs to be smooth and clean. Any irregularities or cracks should be removed using a blade, and then filled with putty. After the putty dries, sand it down. For large areas, it’s best to mix old powder with cooked rubber powder to strengthen the wall. For small gaps, use gypsum powder mixed with a bit of oil to create a suitable filler. It’s also advisable to apply two coats of varnish to protect the wall from moisture. Once dry, gently sand the surface again. Avoid over-applying oil, as this may make the wall too smooth, leading to poor adhesion and potential seams when the wallpaper dries. The main steps for applying wallpaper on a plasterboard surface include: cleaning, filling gaps, sanding, sealing seams, applying joint compound, sanding again, brushing the base adhesive, marking lines, applying the wallpaper adhesive, smoothing the paper, matching patterns, pressing out air bubbles, wiping off excess glue, and trimming any excess. Before pasting the wallpaper, the wall treatment must meet certain standards. The wall surface should be smooth, dry, crack-free, and free of dust. For cement brick walls that are relatively flat, you can apply putty and then brush on a thin layer of varnish before pasting the wallpaper. For gypsum board walls, which often have seams, these should be filled first before applying the joint compound. Varnish and primer serve to cure and protect the putty, while also improving the anti-alkali properties of the wallpaper. Painting should only be done once the putty is completely dry. The wall preparation for wallpaper is similar to that for painting, so a painted wall can be converted into a wallpapered one, but it should be sanded first. When pasting wallpaper, the base treatment must comply with the national standard GB50210-2001 for the acceptance of quality in building decoration. This includes removing loose old layers from old walls and applying an interface agent. New concrete or plaster walls should be coated with an alkali-resistant primer before applying putty. The base surface should have uniform color, with moisture content not exceeding 8% for concrete or plaster, and 12% for wood. The wall should also be flat, vertical, and have proper angles. A seal coat should be applied before pasting the wallpaper, ensuring the putty is firm, non-powdery, and free from peeling or cracking. Lastly, always consider the environmental impact of the wallpaper adhesive used. Led Strip Lights,Led Phyto Lamp Strip Light,Led Plant Grow Strip Lights,Led Light Strips Non-Waterproof Shenzhen You&My Electronic Technology Co., Ltd , https://www.szyoumylighting.com