I'm trudging through the woes of my first rental property. The
previous owner had recently installed central air but left 2 old and
dusty AC units in the wall. What is the best way to go about patching
the holes when I remove the units? I need a three or four year fix. I
was thinking about installing two thick pieces of plywood on either
side and them securing them with 4 toggle bolts and then sealing with
silicon and then painting. My other option is to call a professional,
which would make more sense. What type of solutions should I look for.
Drywall on the interior would be nice and smooth, but how would all of
this take place?
Your first concern is excluding water and air.
You don't mention the exterior siding...
Add 2x4 nailers within opening to position sheathing patch.
Patch in a piece of sheathing with outer face matching plane of existing sheathing.
sealant at edges would help.
Patch in a piece of building paper lapped to shed water to complete that system.
Add insulation in cavity.
Patch in interior finish.
I think the first concern should be to make sure the holes in the wall
where done properly in the first place using a header otherwise
removing the units and not filling the gap adequately may lead to more
That would look ugly. You should fix it so that it is undetectable
that the wall A/C unit was never there. On the interior this might
include doing some drywall and painting an entire wall (still no big
deal IMO). On the outside I can't say what that would entail because
you have provided no details.
<< Thanks for the input. The wall is concrete block. >>
You should have mentioned this in your original post. In any event. a bag of
Sakrete mason mix and some concrete blocks spliced into the hole will work just
fine. Rent a diamond blade saw to size the blocks the way you want them. Get a
book on masonry projects to learn some elementary techniques. Some plaster mix
on the interior will finish the job. A pro bricklayer and a helper can do the
pair in day if you find it too frightening. HTH
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