Wallpaper Care

How to Repair Wallpaper: Fixing Tears, Bubbles, and Lifting Seams

Most wallpaper damage is local — a torn corner, a bubble that never flattened, a seam that has curled away from the wall — and none of it usually requires stripping and rehanging the whole wall. Each fault has a specific, fairly quick fix. Here is how to repair the three most common problems, and when a patch is the better call than trying to save the original strip.

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Small tears: glue the flap back down rather than patching over it

For a clean tear where the torn flap is still attached and intact, lift the flap gently, apply a small amount of wallpaper seam adhesive or clear PVA to the underside with a fine brush, and press it back into place with a seam roller. Wipe away any excess glue immediately with a damp sponge before it dries, since dried glue on the paper face leaves a visible sheen. Let it dry fully under light pressure — a strip of tape over baking paper for a few hours works well — before removing the tape.

Larger tears or missing pieces need a patch, not a repair

If a piece is missing or the tear is too ragged to realign, cut a patch from a leftover offcut of the same paper, matching the pattern to the surrounding wall exactly. Tear the patch's edges by hand rather than cutting them with scissors — a torn edge feathers thinner than a straight-cut edge and blends into the surrounding paper almost invisibly, while a cut edge shows as a hard rectangle. Paste the patch and press it into place, aligning the pattern first before pressing the edges down.

Bubbles: slit them, not stab them, then work the paste in from the slit

A trapped air bubble usually means paste dried before it fully bonded to the wall. Make a small slit along the bubble with a sharp craft knife, following the pattern's grain line if there is one so the cut is disguised. Using a fine syringe or the tip of a small brush, work a little wallpaper seam adhesive into the slit and under the surrounding paper, then press flat from the centre outward with a seam roller, pushing any excess glue and trapped air out through the slit. Wipe clean immediately.

Lifting seams: re-paste under the edge before it curls further

A seam that has started to lift usually gets worse over time as the exposed edge dries and curls more. Lift the loose edge carefully, apply a thin line of seam adhesive underneath with a fine applicator, then press the edge back down firmly with a seam roller, working from the top of the wall downward. Wipe off any adhesive that squeezes out before it dries. Catching a lifting seam early, before the edge has fully curled and become brittle, makes this fix far more reliable.

When to stop patching and replace the whole strip

If more than roughly a third of a single strip is damaged, or if the damage sits at eye level in a very visible spot with a bold pattern that is hard to match seamlessly, replacing the whole strip usually gives a better result than a patch. Keep offcuts from the original hang specifically for this reason — a strip cut from the same batch and roll will match in colour and pattern exactly, which a newly bought roll years later often will not.

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Common questions

Can you fix a bubble in wallpaper without redoing the whole strip?

Yes. Slit the bubble along a pattern line with a craft knife, work a little seam adhesive into the slit with a fine brush or syringe, then press flat from the centre outward with a seam roller. Wipe off excess glue immediately before it dries.

How do you patch a wallpaper tear so it does not show?

Tear the patch edges by hand rather than cutting them — a torn edge feathers thin and blends into the wall, while a scissor-cut edge shows as a hard line. Match the pattern exactly before pasting the patch down, aligning the design first and pressing the edges last.

Why do wallpaper seams lift over time?

Usually because the seam did not fully bond when originally hung, or because a change in humidity has caused the paper to shrink slightly at the edge. Re-paste under the lifted edge with seam adhesive as soon as you notice it — catching it early, before the edge dries and curls, makes the repair far more reliable.

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