Learning Center · Interior
Wallpaper Removal Before Painting
Taking wallpaper down is the easy half. Getting the wall ready for paint afterward is what decides whether the new finish lasts. This guide explains both halves.
Updated October 11, 2026
Read This First
The short version
- The painting industry standard says all wallcovering adhesive must be removed before new finishes go on.
- Sanding adhesive instead of removing it is not acceptable prep under that standard.
- Water based paint can reactivate leftover paste and crack, so residue gets sealed with a primer made for it.
- Torn drywall paper is sealed and patched before paint, or it bubbles.
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Direct Answer
Should wallpaper come off before you paint?
Usually yes, and the old paste has to come off too, or the new paint can crack and peel.
Removal is the reliable path
In most rooms, yes. Paint over wallpaper can loosen the paste and show every seam, so the paper comes off first. Then the leftover paste is washed off and the wall is sealed, patched and primed before any color goes on. The steps below follow the painting industry’s own standard for wallcovering removal.
Process
How wallpaper comes off
Score or peel the face, soak and scrape the backing, then wash off every bit of paste.
Paper off, paste off
Removal has two parts. The printed face is peeled or scored, the backing is soaked and scraped, and then the paste left on the wall is washed off. The Painting Contractors Association’s standard on wallcovering removal says water soluble adhesives are removed by thoroughly washing with clean water and rinsing.
No sanding shortcut
Leftover paste must go. The same standard says all wallcovering adhesive shall be removed from surfaces that will get new finishes, and that sanding the adhesive in place of removing it is not acceptable surface preparation.
Before You Start
Know which kind of wallpaper you have
Strippable, peelable and traditional papers come off in different ways, so test a corner first.
Test a corner
Start small. Lift a corner of the paper with a putty knife and pull slowly. Strippable paper comes off whole and leaves little behind. Peelable paper leaves its paper backing on the wall, which then has to be soaked. Traditional paper tears in small pieces and needs scoring and soaking from the start.
Water near outlets
Soaking a wall puts water near electrical boxes. Cover plates come off, the openings are taped, and power to those outlets is shut off at the breaker before the wall gets wet. Floors and baseboards are covered, because the soaked backing and paste make a slippery, sticky mess.
Before Paint
Why the wall gets sealed before paint
Leftover paste and torn drywall paper get a sealer so water based paint does not crack or bubble.
Paste residue and torn paper
Water and old paste do not mix with new paint. The data sheet for Zinsser GARDZ, a sealer made for this, says water based coatings or texture finishes will reactivate old wallpaper adhesive, which results in cracking and peeling, and that GARDZ seals in residual adhesive and penetrates and seals damaged facing paper. A sealer like it goes on before patching and paint.
Patch, then paint
Torn spots get repaired. Once sealed, gouges and torn areas are patched and sanded, texture is matched where the wall had it, and the wall is primed and painted. Our interior painting guide covers the paint steps.
What We Find
What sometimes turns up under wallpaper
Old paper can hide stains, soft drywall or mold from a past leak, which get fixed first.
Look before you paint
Wallpaper can hide history. Stains, soft spots or mold behind paper in a bathroom or along an outside wall can mean a past or current leak. Those are dealt with at the source before paint. Our interior painting service starts with a look at the bare wall.
Common Questions
Questions homeowners ask
Can you paint over wallpaper?
It is possible on well bonded paper, but water based paint can loosen the paste and show seams, so removal is the more reliable path.
Do you have to remove all the wallpaper glue before painting?
Yes. The painting industry standard on wallcovering removal says all adhesive shall be removed from surfaces that will get new finishes, and that sanding it instead is not acceptable.
Why is my paint cracking after wallpaper removal?
Leftover paste reactivated under water based paint is a common cause. The fix is to remove the paint and residue, seal with a primer made for it, and repaint.
What primer do you use after removing wallpaper?
A sealer made for paste residue and torn drywall paper, such as Zinsser GARDZ, before patching and paint.
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