In what respect should wallpapers be checked before starting wallpapering works?
Before commencing wallpapering work, be sure to check:
1. Is the number of wallpaper rolls sufficient??
Ordering extra rolls is a waste of time, and the follow-up delivery is not always from the same production lot, which can be identified by the identification number.
2. Whether all rolls of wallpaper have the same batch identification number?
Only wallpapers from the same production series, recognized by the same identification number, guarantee a completely identical shade of color.
3. Whether the pattern and color shade of all rolls match exactly?
4. Are the wallpapers damaged at the edges??
Check when trimming, that the wallpapers do not have print defects on the edges.
Why most types of wallpaper should be moistened before sticking?
When wet, the wallpaper paper stretches. When the wallpaper on the wall dries, it shrinks, which eliminates the bubbles. Because wallpapers after soaking are more flexible, it is possible to apply them without overlapping. Apart from that, all strips of wallpaper, subjected to soaking, should be the same length.
What types of wallpaper should be used with a backing made of recycled paper?
The backing made of recycled paper is glued before applying expensive high-quality wallpapers. This applies to heavy background wallpapers, embossed wallpapers, velor, textile, from natural fibres, motif.
What adhesive mixtures are used before wallpapering for sticking recycled paper?
Recycled paper from a roll should basically be glued with the same adhesive mixture, which the actual wallpaper will be glued afterwards.
What glue mixes are used for gluing:
a) embossed wallpapers?
b) velvet wallpapers?
c) warp wallpapers?
d) textile wallpapers?
e) cork wallpapers?
f) grass wallpapers
g) metalized wallpapers?
The required adhesive mixtures for different types of wallpaper are as follows:
| Type of wallpaper | Adhesive mixture required | Proportion |
| a) embossed wallpaper | special glue | 1:20 |
| soluble special glue | 1:25 | |
| b) velor wallpapers | special glue | 1:20 |
| soluble special glue | 1:25 | |
| c) warp wallpapers | special glue | 1:20 |
| special adhesive soluble dispersion adhesive for fabrics (apply to the reverse side of the wallpaper) | 1:25 |
| Type of wallpaper | Adhesive mixture required | Proportion |
| d) textile wallpapers | special glue
special adhesive soluble dispersion adhesive for fabrics (apply to the reverse side of the wallpaper) |
1:20
1:25 |
| e) cork wallpapers | special glue
soluble special glue |
1:20
1:25 |
| f) grass wallpapers | special glue
soluble special glue |
1:20
1:25 |
| g) wallpaper
metallised |
thin wallpapers glued with special glue
or on special soluble glue, each time with a supplement 25% special glue |
1:20
1:25 |
| thick wallpapers glued with dispersion adhesive for fabrics with an additive 10+20% special glue | 1:20 | |
| or with addition 10+20% special soluble glue | 1:25 |
Because there can be big differences between different types of wallpaper, instructions must be strictly followed, in which the manufacturer of the wallpaper specifies the exact type of glue.
At what temperature should wallpaper dry?
Wallpapers should dry at room temperature. They dry too quickly, np. due to draft or excessive heating, it causes loosening at the joints (seams), because the top layer is subjected to rapid stresses, while the adhesive is still wet and unable to transfer the required forces. Drying the wallpaper at too low a temperature causes bubbles to form underneath them, as well as discoloration.