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When we paste the wallpaper, it is not necessary to keep the wall level and clean. It is understood that the layout of the wallpaper has a great relationship with the substrate. Different substrates need to be treated differently, and it is necessary to pay attention to many details when processing. It may not be as easy as you think.
Do not paint wall paint in new houses:
For wallpapers, if the materials are different, the processing method will be different. If the wallpaper is laid on the wall of the new house, the substrate processing is the simplest. The procedure is the same as the foundation wall construction, except that it is not painted, that is, the interface agent is normally brushed in the plaster layer, and then the 2-3 times of putty can be scraped. Then you can carry out other bricklayers, oilers and other renovations, and then finish the wallpaper on the wall when you are finished.
Old house paint needs to be tested first:
If the original wall brush is painted and you want to renovate the wall, is it possible to lay the wallpaper directly on it? For this problem, if it is the old wall, some judgment is needed. If the original paint is tight and does not fall off, you can directly brush the base film on it (the necessary materials for wallpaper, strengthen the wall, increase the adhesion of the wallpaper, protect the wall when removed), and directly affix the wallpaper. However, if the original paint is unstable, the original substrate needs to be removed.
How do you determine if you need to remove the original paint? The owner can self-test the paint. Take a wet towel with water (use it without dripping the floor), fix it on the wall in some way, and look up the next morning. If there is no peeling off the wall, then The wall substrate is well treated and the combination is still very tight. You can directly brush the base film and paste any wallpaper.
If the wall surface is blistering or the like, the wall surface is unstable. If the wallpaper is directly laid at this time, the wall adhesion is relatively low, and the wallpaper is easy to fall off. If all the walls are unstable, you need to remove all the walls, shovel the plaster layer, re-apply the interface agent, and scrape the putty.
If only the partial wall substrate is unstable, it is only necessary to remove part of the substrate and re-brush the interface lotion. After completing this part of the process, the entire wall is also marked with a wallpaper knife to form a mesh-shaped table. Generally speaking, the deeper the scratches, the denser the smaller the better. Because the original base is relatively smooth and the adhesion is relatively poor, this method can be used to connect the two types of putty before and after, to ensure the stability of the substrate and reduce the possibility of wallpaper cracking.
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