The biggest challenge with wallpapering a cork wall is not the durability, but moisture in any form. For example, if wallpaper is glued with conventional lane on cork, the cork begins to shimmel earlier or later. Not insignificant are also location and thermal loading of cork-covered wall.
Natural enemy of moisture
In general, an old cork wall is suitable as a substrate for wallpapering in the vast majority of cases. It is worked up with a primer and / or sealer and then has all the properties for durable wallpapering. However, the natural product cork is very sensitive to moisture.
- Also read - Gluing a cork wall according to its purpose
- Also read - Removing or covering an old cork wall
- Also Read - Fasten a cork wall with glue, nails or screws
When a wallpaper is applied to the cork wall, it depends first on the type of wallpaper whether the cork is at risk of mold and rot. Paper wallpapers such as woodchip are open to diffusion and thus offer any moisture that may arise a chance to escape. Plastic and non-woven wallpapers seal the cork wall airtight. In this case, it must be possible to exclude residual moisture in the cork and wall moisture.
Do not use any water-based aids
Conventional wallpaper paste cannot be used for wallpapering on cork due to its water-based nature. The same goes for water-based primers. A cork wall must be covered with a "dry " plastic adhesive such as acrylic.
These adhesives are usually applied in a snake shape. Therefore, the wallpapering work changes from hanging up the strips to evenly pressing and sticking them on. A primer or sealant is applied to the cork wall for even holding power.
Note the specific properties of wall and cork
Several questions need to be answered before wallpapering:
- The cork is attached directly and fully glued to the wall?
- Is the cork completely dry??
- Are there any sources of moisture in the room (kitchen, bathroom, ornamental fountain)?
- Is the wall to be wallpapered exposed to greater temperature differences (external wall)
- Is the cork surface "greasy" and cannot be primed?
In general, wallpapering a cork wall is not a long-term solution, even with optimal conditions. When planning, a realistic shelf life target of five years should be taken into account.
For long-term solutions, the cork wall can only be partially removed. A removal to a residual thickness between two and four millimeters reduces the sensitivity to moisture, as the "reaction mass" of the cork decreases significantly.Tips & Tricks There are clear differences in the quality of cork walls. If in doubt, seek the advice of a specialist, as cork used correctly as a wallpaper substrate has some good properties.