I.Anti-mold wall fabricWill it change color?
To achieve a luxurious, sophisticated, and radiant appearance, wallpaper manufacturers use special production processes, applying metal inks to the wallpaper surface. However, these inks are particularly sensitive to acids and alkalis, and are prone to discoloration after exposure to such substances. This is one of the reasons. Some wallpapers applied to walls may fade naturally over time. However, it is important to understand that wallpaper discoloration does not typically cause localized bubbling. If bubbling does occur, it is likely due to the application of adhesive during wallpaper installation.
Two. What are the causes of discoloration in wall coverings?
1、The selected adhesive product is substandard.
Adhesive products are typically alkaline or weakly alkaline and weakly acidic. Substandard products exhibit greater corrosion towards wall coverings, and can also cause discoloration of special inks, affecting their service life and leading to yellowing and discoloration.
2、Excessive moisture content in the wall
After the membrane application, moisture continuously permeates the wall, and during the drying process, the continuous moisture penetration creates numerous capillary pores in the membrane, leading to discoloration of the wall fabric.
3. High alkalinity in the wall surface, resulting in poor surface treatment.
If the primer or varnish is applied too thinly or unevenly, it cannot form a protective layer on the wall surface, preventing the outward leakage of alkaline substances from the wall. This can corrode the wall fabric, causing discoloration.
4、Causes related to wall materials
The wall treatment material has not fully dried, preventing the formation of a dense protective layer. When the wall covering is applied, the adhesive and moisture can penetrate due to pressure.
5、Improper construction methods.
During construction, excessive pressure with a hard scraper damages the waterproof protective layer on the wall fabric, causing detachment and discoloration, particularly at the seams.
6、Liquid leakage
Excessive wiping with liquid. When applying wall coverings, if the adhesive is not properly controlled, resulting in overspray, many workers handle this by wiping away the excess or even completely wiping it down. Some workers may also habitually wipe along the edges with a sponge. This will inevitably leave some adhesive residue on the surface of the wall covering. Over time, this can lead to noticeable discoloration.