How do I stop wallpaper peeling at the seams?
Fixing a lifting seam, and why it lifted — usually the wall underneath rather than the paper.
- Difficulty
- beginner
- Time
- 30 min
- Read
- 2 min
Short answer
Lift the seam gently, work seam adhesive underneath with a small brush, press it back and roll it flat. If it keeps lifting, the wall behind is damp or was never sealed.
A lifting seam is usually a symptom. Paper peels where the paste never got a grip — an unsealed wall, a damp patch, or paste that was too thin at the edges — and the repair only holds if that is dealt with too.
What you'll need
- Seam adhesive
- Small brush or syringe
- Seam roller
- Damp sponge
- Craft knife (optional)
Step by step
- Find out why it is lifting.Damp behind it, an unsealed wall, or paste that dried out at the edge. If several seams are lifting in the same area, suspect damp and deal with that first.
- Check for damp before repairing.Touch the wall behind. Cold and damp means the repair will fail again in weeks. Find and fix the moisture source before re-sticking anything.
- Lift the seam gently.Ease it back just far enough to work behind. Do not force it — dry paper tears. Dampen it slightly with a sponge if it is brittle.
- Clean out the old paste.Dried paste and dust stop new adhesive gripping. A damp sponge, then let it dry before applying new adhesive.
- Apply seam adhesive, not ordinary paste.It is thicker and grabs faster, which is what a vertical edge needs. A small brush or a syringe gets it right into the seam.
- Press back and roll it flat.A seam roller along the join. Firm, even pressure. Wipe off any adhesive squeezed out immediately with a damp sponge — dried adhesive on the surface shows.
- Hold it if it springs back.Masking tape over the seam for an hour, or a book propped against it. Some papers need holding while the adhesive grabs.
- Seal the wall properly next time.Wallpaper needs a sealed, sound surface. Sizing or a primer before hanging is what stops this happening at all.
Tips
- Seams lift most in bathrooms and kitchens because of humidity. Extra care with the adhesive there, and address the ventilation.
- If a whole strip is lifting rather than a seam, it is usually easier to strip and rehang that piece than to repeatedly re-stick it.
- Keep a leftover roll. Matching wallpaper years later is close to impossible.
Questions people ask
Why does my wallpaper keep peeling at the seams?
Usually the wall was not sealed before hanging, or there is damp behind it. Re-sticking works only if the underlying cause is dealt with.
What glue should I use to fix a wallpaper seam?
Seam adhesive rather than ordinary paste — it is thicker and grabs faster, which is what a vertical edge needs.