Blocked corner and walls
New build, mostly being done by contractors but I’m doing some of the easier stuff myself including insulation.
Problem #1: So for the main floor I’m using Rockwool batts, and planning it out I just noticed one of the corners isn’t quite a California corner. They blocked it out as one, but looks like the last board of the adjacent wall stops right in the way.
What’s the best or most reasonable way to insulate that corner?
I’ve thought about pulling the one board, putting Rockwool in, and putting the board back. Or, drill 3-4 3/4” holes in it and fill it with canned closed cell.
Problem #2: Similar to problem 1, they’ve blocked several
spots for the interior walls to fasten to the exterior (see 3rd pic) that have a cavity behind them. Unfortunately I think these are loaded with nails, so the spray foam is probably the easier option there.
Attached sheathing is Zip System if it matters.