A gypsum plaster wall can be the ideal substrate for wallpaper. Prerequisites are an intact condition of the plaster, cleanliness and freedom from dust. There are a few tricks that make wallpapering on gypsum plaster easier and ensure a good result.
Prepare the walls
Before starting the actual wallpapering work, you should carefully examine the substrate. Paste a new, fresh gypsum plaster with diluted paste. After drying, it is a good base for the wallpaper. Choose the paste depending on the type of wallpaper to be wallpapered. You will also find information on correct pre-pasting in the manufacturer's instructions for use.
Older gypsum plaster must adhere firmly in all places, be dry, clean and free of dust. In the event of moisture damage or mold formation, the plaster must be completely removed from the wall. The only thing that helps here is a new plaster. If you find damage such as small dents and holes, repair them with plaster filler. You can also use it to repair larger flakes. After the repair work, the filler (€ 4.25 at Amazon *) must dry out completely. Only then can the gypsum plaster continue to be prepared for the wallpaper.
- Also read - gypsum plaster for the basement
- Also read - gypsum plaster or lime cement plaster for indoor use
- Also read - felting gypsum plaster
Helpful tools for wallpapering:
- Wallpapering table on which the wallpaper rolls are spread out and measured
- Wallpaper rail and wallpaper knife to cut the wallpaper exactly to size
- Quast for applying paste to large areas on walls and wallpaper
- Pressure spatula or pressure roller for pressing the wallpaper seams on
- Wallpaper brush to smooth the wallpaper
Wrong and correct primer
For the pretreatment of the gypsum plaster no emulsion paint or deep primer (4.81 € on Amazon *) may be used. Both liquids strongly block the subsurface. It is then no longer absorbent and paste does not hold on to it. The wallpaper cannot stick to it either. The areas of the wallpaper seam can pull apart weeks after wallpapering. To rule out such defects, use a special wallpaper primer to be on the safe side. It combines perfectly with the substrate and also compensates for color differences.Tips & Tricks A surface with strong color differences is treated with a pigmented primer. It compensates for different color areas that have resulted from filling work. Modern wallpapers usually do not have a paper backing. Here the colors of the underground can shimmer through. Pigmented primer prevents this.