Removing wallpaper is one of the least fun parts of a remodel. Painting over it is tempting. In some cases it works. In others, you're trapping a problem under new paint and making future removal twice as hard.
When painting over wallpaper works
- The paper is fully adhered with no lifting edges, bubbles, or seams opening up.
- It's a smooth wallpaper (not textured, not fabric, not grasscloth).
- The walls underneath are in good shape.
- You accept that you (or a future owner) will eventually have to deal with it.
When it doesn't
- Any corner or seam lifting. Paint locks the lifting in place.
- Water damage or stains showing through — paint doesn't block the moisture.
- Textured or woven wallpaper. The texture shows through every coat.
- Multiple layers of old paper already stacked on the wall.
The process when we do paint over
Wash the paper with a TSP substitute to cut years of film and fingerprints. Spot-glue any small lifts. Apply an oil-based or shellac primer (Zinsser BIN or Cover Stain) — water-based primer rewets the adhesive and starts a new problem. Then two finish coats.
The removal alternative
Wallpaper removal + skim coat of the walls adds a day or two to an interior project. The finish is indistinguishable from fresh drywall. On bids where we see significant wallpaper, removal is almost always the right call even if it costs more up front.