I am remodeling an older home (1958) and when I removed a large mirror, I discovered a bowed in section of drywall. It is about 3 feet wide 4 feet tall and 1/2 inch at the deepest. The rest of the wall is reasonably flat. I am trying to keep the wainscoting and I don’t want to remove the drywall section to repair it. Can I use drywall plaster to fill in the gaps? Will that much plaster stick to the wall unsupported or should I use drywall screws? Any recommendations would be appreciated.
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First I'd give it a few weeks, to see how much it's going to flatten out.
(Is this in a bathroom, an interior wall, an exterior wall?)
fuzz
If the bowed in part is above the wainscot, I'd cut it out and add a nailer / nailers to flatten out the frame, then replace the drywall.
But if you want to just fill it in, I'd get some qtr inch drywall and glue a pc/pcs into the depression to "almost' bring it to plane with the rest of the wall. Next, I'd durabond the fill to bring it further to right with the rest. For the second and or last coat, use a sandable mud, either mix or bucket.
I'm a little curious as to how it could be 3 feet wide. Sounds like an area that lacks normal stud support.
Thanks for the input. This is an exterior wall in a dining room. I haven't opened it up at all to know why the bow is there. The rest of the house is in good shape with reasonably flat walls for an older home. I'm almost afraid to look for fear of adding to the work load.
I have the impression that this in not a new occurance and that it was there in the wall when it was last remodeled. The wainscot hides the lower part and the upper had a large mirror that covered the entire wall. We wanted to go back with just a textured wall with paint and this depression will be very visible. I'll probably try and fill it in and texture for now and address the cause in the next major remodel.
Check the siding on the outside and other clues -- there may have been a window here that was removed and not properly framed in afterwards.
In any event, the mirror would have caused that area to stay damper than the rest of the wall, causing the drywall to swell and warp.