Causes of moldy wallpaper:

First of all, the reason why most wallpapers become moldy is not the wallpaper itself, but the wall. Many walls are of poor quality and prone to water seepage. PVC wallpaper has poor air permeability, and the wallpaper glue is made of organic matter such as glutinous rice flour, so mold is prone to occur. A good way to solve this kind of problem is to choose a good moisture-proof wallpaper base film.

There is another cause of mold that we tend to overlook. That is, during wallpaper construction, if the glue is not completely dry, there is draft or there is a large temperature difference between indoor and outdoor, which can also easily cause the wallpaper to warp. The bulging may cause mold to appear in the future due to the long-term presence of moisture and air in the wallpaper.

In addition, if there is heavy rain in summer, the ambient humidity will easily cause the wallpaper to become moldy.

How to deal with moldy wallpaper:

First of all, if the moldy area of ????the wallpaper is relatively large or there are many, you also feel that even if you repair it, it will not look good and you want to change the style. , then simply replace it;

If the wallpaper is not very moldy, the quality of your wallpaper is not bad and there is still time to remedy it. It is first recommended to wipe it with soapy water or detergent. If that doesn't work, wipe it with a cloth dipped in disinfectant alcohol. If it's not serious, you can remove the mold by wiping it for two or three times.

Another way to remove mold is to use bleach. But it can easily irritate the skin, so be sure to wear rubber gloves when using it and wash it with water. Some people may be afraid of using bleach, fearing that the original color will be removed. Then use some mildew remover specifically designed to treat mold on walls. You can ask at the store where you buy wallpaper.

How to prevent wallpaper from becoming moldy?

1. Choose breathable materials

There are many wallpaper materials on the market, including non-woven fabrics, wood fiber, and PVC. , fiberglass base material, cloth surface, etc. Relatively speaking, PVC wallpaper is the least breathable and is most likely to trap the water vapor discharged from the wall. Over time, it is easy to form mildew spots.

2. Keep the wall dry

The wall must be kept dry. New cement construction generally requires maintenance for 20 to 40 days before wallpaper can be laid. It is worth noting that when decorating, be careful not to allow irregular construction to mix sea sand that is not suitable for wall painting. Sea sand has a high salt content and can easily absorb water, causing "floods" on the wall later.

Before posting wallpaper, the base surface needs to be processed first. If it is a second-hand house renovation, the gaps in the walls must be filled, otherwise the wallpaper will easily become hollow.

3. Pay attention to the quality of paving.

Three-thirds of the materials are seven-tenths of the project. Pay attention to small details when laying wallpaper on the wall to achieve better results. Wallpapers generally come in various patterns. When laying them, you must pay attention to whether there are large gaps between the two wallpapers and whether the parquets are aligned. In addition, watering during paving will moisten the wallpaper, and it will shrink to a certain extent after it dries, so the expansion space should be reserved. Try not to open the shrinkage joints on the wall facing the windward opening.

4. Insist on use and maintenance

Proper maintenance can extend the life of wallpaper and enhance its moisture-proof function. Do not fully open windows and doors during construction and within 24 hours after construction. Excessive ventilation will cause the wallpaper to dry rapidly, shrink unevenly and cause cracks at the seams. After 3 days of paving, pay attention to adjusting the ventilation. Doors and windows should be opened during the day to maintain ventilation; doors and windows should be closed at night to prevent moisture from entering, thereby affecting the firmness of the paste.

How to deal with other wallpaper problems:

How to deal with wallpaper bubbling

Wallpaper bubbling: Wallpaper bubbling is a common problem, mainly when pasting wallpaper Uneven glue application causes the wallpaper surface to shrink and separate from the base layer due to excessive moisture in the later stage, resulting in the appearance of some built-in bubbles. In fact, the solution is very simple. Just use a normal sewing needle to pierce the bubbles on the surface of the wallpaper to release the gas. Then use a needle to extract an appropriate amount of adhesive and inject it into the pinhole. Finally, flatten the wallpaper again and let it dry. That’s it.

How to deal with wallpaper warping

Wallpaper warping: Wallpaper warping may be caused by unclean treatment of the base layer, the adhesive strength of the adhesive is too low, or the edge of the wallpaper at the sun corner is less than 2mm. Wait for the reason, the solution: Use glue powder for wallpaper (wallpaper decoration renderings), apply it on the curled edges, smooth out the warped areas, blow with a hair dryer for about 10 seconds, and then press firmly with your hands until it is firmly adhered. Use a hair dryer to blow dry.