FAQ

Here are some of our most frequently asked questions. 

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How do I calculate the number of rolls I need?

Most of Duro's wallpaper rolls are 53 cm wide and 10 m long. For a ceiling height of 2.40 m, you'll get about 4 lengths per roll and about 3 lengths if the wallpaper needs to be pattern-matched (one length is from floor to ceiling and the width of the roll). The amount of wallpaper used depends on the width and height of the wall, and whether the room has doors or windows. It is always a good idea to order an extra roll to be on the safe side, as this is an estimated calculation of wallpaper consumption (please note that we do not take into account windows, doors etc.).

Example calculation: if the room is 3×4 m, the perimeter is 14 m (3+3+4+4) and about 7 rolls are needed. In case of pattern-matching, more rolls of wallpaper are needed. 

Are all wallpaper adhesives equally good and work with all your wallpapers?

Both yes and no. The most important thing is that you use a wallpaper adhesive that is designed for your wallpaper. The recommended adhesive type is always printed on the packaging of the roll. If in doubt, the staff in your local store will be happy to help you find the right one.

What is the fire rating of Duro wallpapers?

All of Duro's wallpapers are fire tested and rated according to the current European standard, EN 13501-1:2002. The results show that all wallpapers possess properties that give them the best possible rating for combustible materials, which wallpapers are.

This means that Duro’s non-woven wallpapers may be used in escape routes, public meeting rooms etc. on surfaces with a minimum rating of A2-s1, d0 (plaster).

Why does the wallpaper blister?

It is normal for wallpaper to blister after it has been hung. It usually takes about a day for the blisters to settle. If they remain after that time, there could be several reasons.

- Recommended drying time has not been followed.
- The adhesive has dried in patches.
- The surface of the wallpaper is very dense (a longer drying time is required).
- The underlying surface is slow absorbing, resulting in a longer drying time.
- The new adhesive dissolves the underlying wallpaper layer.
- The temperature in the room is too low for the adhesive to dry properly, or the wall may be too cold and damp.

Why are the joints slipping apart?

Either because the wrong adhesive has been used or someone may have tried to pull the wallpaper into place.

Why do the wallpaper joints lift?

Probably because too little adhesive was used. The wallpaper joint dried before the wallpaper was hung.

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