Removing wallpaper is a nightmare. This includes steam, scraping, chemical removers, and so much drywall damage that it will make you question your life choices. But leave it and paint over it? That sounds like a shortcut that could backfire.
So when does it make sense to paint over wallpaper? And when is that a recipe for disaster?
It’s not just laziness. Sometimes it’s about preservation. Old plaster walls are fragile. When the paper is removed, pieces of the wall may tear off. If the wallpaper is stable, flat and firmly attached, painting can save hours of work and protect the surface below. However, you need to know the difference between a temporary solution and a long-term solution.
Green Light: When You Can Really Do It
Painting over the wallpaper is only possible if the surface is solid. If the paper bubbles, peels, or sticks loosely, do not continue. Paint adds weight and moisture. Moisture moves. If the glue fails, the paper still comes off and now the paint sticks to the wall where it doesn’t belong.
Check for adhesion. Press your thumb against the seam. If it rises, it’s not ready. If it’s firm, you’re in business.
Also, consider the pattern. If you have a vibrant and contrasting design – think bold florals or dark stripes – the color will likely show through with up to two coats. This is where primer becomes your best friend. A high-quality, stain-blocking primer is not negotiable. It seals the glue, prevents the pattern from bleeding through and ensures a smooth surface for your topcoat. Oil- or shellac-based primers are best suited for this. They block stains and stick to shiny surfaces better than latex.
Red light: When you need to strip it
In certain situations, painting over wallpaper is a terrible idea.
First: water damage. If the wallpaper has ever gotten wet, the glue is probably broken. Mold may grow behind it. Paint traps moisture. If you seal wet wallpaper, mold will be trapped in the wall cavity. This is a health-threatening and structural problem. Strip it. Dry wall. Start over.
Second: vinyl coated wallpaper. These papers have a plastic layer that makes them durable and washable. The paint does not adhere well to plastic. In a few months it will peel, blister or crack. If you are not willing to sand the entire surface to create a mechanical bond (which is stressful), you will need to remove it.
Third, multiple layers. When previous homeowners decided to paper over old paper, they ended up with a thick, unstable mass. The weight alone can pull the surface layer off the wall. In addition, the condition of the lower layers cannot be properly assessed. Pull it back onto the drywall or plaster.
This is how you prepare if you’re going through with it
Assuming you’ve passed the red flags and the green lights are on, it’s the prep work that determines success. Rush this and the paint will fail.
- Clean the surface. Wallpaper collects dust, grease and smoke residues. Use a mild cleaning solution and a sponge to wash the walls. Rinse with clean water. Let it dry completely.
- Fix the seams. Use
