Hanging Instructions > FAQ
- What does "wallpaper soaking time" mean?
- The process during wallpaper hanging in which the paste applied to the paper backing of the wallcovering causes the fibers to swell. During this process the width of the wallcovering increases by about 2.5%, and the length increases by about 0.5%. It is important to adhere to the stipulated soaking time listed on the label of the wallcovering to avoid hanging errors such as wrinkling or opening of the seams.
- What is a pattern repeat?
- A pattern repeat is measured in cm and shows the horizontal repeat of the pattern on the roll. Repeats are shown on the label, i.e. AF: free match allows hanging the wallcovering without minding the repeat, AV: offset match, GV: straight match.
- What is reverse hanging?
- This means that each length must be hung in the opposite direction from the previous length to achieve a uniform result. With a free match, the lengths must sometimes to reverse hung to avoid slight color variations. If so, this will be clearly indicated on the rolls.
- What do the batch numbers on the wallpaper roll label mean?
- The item number and batch number on the wallcovering are very important. They are given on the front of the label. Only use wallcovering with the same batch number in the same space. If the batch number is the same, there is little risk of color variations. Always check if the wallcovering must be reserve hung. This may depend on the batch number and will be sated, if necessary, on the label or the cellophane packaging on the wallcovering.
- Which glue or paste should be used with which wallpaper?
- We recognize three types:
1. Standard paste: Pure methylcellulose to bond paper-backed wallcoverings.
2. Special paste: Pure methylcellulose with synthetic resin additives for non-woven backing wallcoverings such as vinyl heat-embossed wall paper, structured vinyls and all other natural surface non- woven wallcoverings.
3. Paste for wallpaper machines: Pure methylcellulose reinforced with synthetic resin or dispersion adhesives specifically designed for use in paste machines. - What is the advantage of non-woven wallcoverings?
- Non-woven wallcoverings are dimensionally stable, hairling crack-bridging, and can be removed completely when drying. No soaking time is necessary. Non-woven wallcoverings are easy to hang using the paste- the- wall technique, or the backing may be pasted by hand or pasting machine.
- What is the cause for open seams and how can they be avoided?
- An incorrectly pretreated background, uneven pasting, inadequate soaking times, or inadequately mixed paste may be the cause. Avoiding drafty conditions or excess heating during drying time helps prevent gaping seams. Pasted wallpaper lengths should be folded together to avoid uneven glue or insufficient glue on the edges.
- Can old wallpaper simply be pasted over?
- No. Old wall paper needs to be removed completely and the surface must be prepared for the new hanging before any renovation work.
- How can stubborn remains of wallpaper be removed from the wall?
- A commercially available wallpaper remover may be added to the water that is used to soak the wallpaper to be removed. This may help to dissolve the old paste more rapidly. Wallpaper with a water repellent surface must be carefully perforated, avoiding damage to the wall surface, before the wallpaper removal fluid is applied, allowing for better penetration. After sufficient soaking time, the wallpaper can be easily removed with a spatula.
- What is “double-cutting”?
- Double cut is used to yield a perfect seam, when butt joining is not possible or recommended. Hang two lengths overlapping by about 5 cm in the seam area or on the outer corners, both layers are cut through with a sharp trimming knife. Remove excess strip, yielding a clean, perfect seam.
