We noticed some moisture on a wall this past winter and I finally got around to having a look at the drywall behind the baseboard. I pulled off the baseboard found a mess.
I peeled the plastic back behind the rotted drywall and looks as though there is missing insulation behind the rotted piece. There is a stud adjacent to the hole. House was built in Winnipeg in 1960s.
Can I spray some foam in there and repair the drywall or is it something more involved that requires a contractor? There rest of the wall is fine.
Looking for advice. Thank you.
You could try the spray foam and see if it is corrected. However I believe there may be something more happening. It sounds as though the workmanship may not be up to par. If you have suspended CIELINGS you could also check between the floor joists to be sure vapour barrier is in place. Warm air may be escaping and frosting up when it hits the cold and melting as conditions warm up. I would try the foam first Nothing to loose.
If all fails I'd be available to inspect.
spraying foam in there is a amateur's fix and will do nothing. You have air egress and/or a actual leak in wall. If there is no vapor barrier or its compromised then hence the issue. You also have the start of mold which just grows. The right way to fix is open area up with one section floor to 1 foot from ceiling then expand out as problem continues. Find if there is a leak and fix. (may involve more demo). Any mold in area .. spray with 100% bleach solution (it kills it dead)..If just a vapor barrier issue then good to go to next stage. RIGHT WAY: replace any rotted or moldy wood framing, all new insulation in damaged area, vapor barrier and caulk joints of overlapping poly on warm side of wall..then drywall...all done, never come back and healthy
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