Insulation Madness and Confusion Questions
Ok..passed our inspections and ready to insulate. Climate zone 6, two story, balloon frame, vented attic, 6″ ceiling joists.
I have 3″ rigid foam on wall interior between the wall studs. (I bought them cheap and they were cut to 16″ already) Exterior is 1″ Douglas Fir with Typar then Cedar Shingles:
Questions on wall insulation:
1. Can I just shove fiberlass between foam and edges to “air seal”?
2. If not is there a caulk that will work or is spray can foam my only choice?
3. I was planning on blowing cellulose but the budget isn’t going to allow it, I never really factored in the huge cost of insulweb and the budget is pretty tight right now so I’ll go ahead and install fiberglass to fill in the remaining 3-5″ of wall space as we furred out the walls. The code is calling for a vapor/poly barrier. With the (outside to in Foam/fiberglass/gypsum plaster) wall structure is a poly going to cause problems? The concern by the building inspector is moisture migrating to the fiberglass. Thanks I hope to get going on this today or tomorrow.
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