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I recently bought a house and was removing the TV mount from a wall. The wall shows signs that it's paint over wallpaper and the mount was stuck to the wall so I had to use a scrapper to get the mount out. In the process it peeled down beneath the paint. Now I'm trying to figure out how best to fix the wall so I can paint it.

Wall damage

I'm trying to figure out if it's best to cut away anything loose and repair this small piece or try to scrap the wall down and repair the rest of the wall. Thoughts? Any other suggestions?

  • It's hard to tell from the picture, but is that masonite under the paint? Paneling maybe? – Comintern Sep 23 '15 at 2:50
  • Yeah, that's part of my debate :) The dark brown is solid, not fibrous. The lighter brown around the drill holes is the more fibrous material I'd expect if I had removed too much. So I can't tell if that's something that I need to just prime and paint over or something I need to mud. I looked at the pieces of paint again and it looks like two layers of paint (the lighter and darker) then a dark backing, which might be the wallpaper? The dark brown shows some of the pattern of the wallpaper that must have been there. House archaeology ... – Rob Sep 23 '15 at 14:01
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Since the edges of the old paint/wallpaper are loose, you'll have to remove it back to where you get a tight edge. The main problem that you'll run into if you just try to scrape it is that you're likely to remove way to much before you get a suitable edge.

The best way that I've found to deal with paint blowouts like that is to score through the paint/wallpaper with a utility knife around the raised area, and then scrape up to your scoring. A putty knife or drywall knife works pretty well for this. This prevents you from raising more paint than you have to in order to get a decent looking repair, because the scoring will give a nice clean break in the paint.

When you have the area scraped with a clean edge, feather the edges with drywall compound and sand smooth. Since you're dealing with some sort of fiberboard instead of plaster, I'd also skim coat and sand the exposed area too (which you'll have to do anyway in order to fill the holes). After that, it should mostly disappear when re-painted.

Note that fiberboard can leech through paint pretty badly, so I'd hit it with a pretty good stain blocking primer.

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