Insulating Rim Joists
I’m getting ready to insulate my rim joists, but I’m not sure if my preferred approach–eps or xps sealed with spray foam–will work since with a atypical construction. The 2×4 rim joist does not run the full height of the 2×8 floor joists, and those joists have triangular blocking to shape the drip edge of the siding (see attached for illustration). Are there any issues with the air cavity formed if the rim joist is sealed behind foam?
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