Seams that open and corners that lift are almost never the paper's fault. What preparation and pattern matching actually involve.
Wallpaper is unforgiving in a way paint is not. Paint follows the wall; paper is a flat sheet laid onto a surface that may not be flat, in rooms whose corners are rarely square. Everything that goes wrong later — open seams, lifting edges, a pattern that drifts — traces back to what happened before the first length went up.
The wall has to be smooth, sound and sealed
- Old paper comes off properly, along with the old adhesive. Papering over the top borrows a problem rather than solving it.
- Holes and dents are filled and sanded — every bump reads through a flat paper, and worse through a shiny one.
- Fresh plaster or bare filler is sealed first. Otherwise it drinks the paste unevenly and the paper grips in some places and not others.
- Glossy paint is dulled so there is something for the paste to hold on to.
Pattern, repeat and why the first length matters most
A patterned paper has a repeat, and the way the pattern steps across from one length to the next is set by how it is hung. The first length is plumbed with a level, not aligned to a corner — because corners lean. Get that first drop truly vertical and the pattern stays honest across the whole wall. Start off a leaning corner and the drift compounds until it is obvious.
Corners, and where the pattern should break
Paper is not usually wrapped around an internal corner in one piece; it is cut and overlapped slightly, because a corner that is out of square will crease and bubble a wrapped sheet. Part of planning a room is choosing where the least conspicuous break lands — behind a door, above a doorway, in the corner least seen from the entrance — rather than in the middle of the wall you look at from the sofa.
How much to order
A big pattern repeat means more waste, because each length has to start at the right point in the pattern. Order it all in one go with matching batch numbers: dye lots differ between print runs, and a roll bought later to finish a wall can be visibly off against the rest. Keeping the offcuts is worth it too — a damaged panel can be patched from spare paper, and cannot be patched from a discontinued one.
Questions about your own project?
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