another insulation dilemma
hi. i’m building a workshop in colorado springs (zone 5b is it?). it’s a 700 sq ft box with a 12 foot tall 2 in 12 roof using i joists. i’m presently framing it and revisiting my insulation plans.
my drawings approved by the building department show exterior foam (4″ xps on the roof and 2″ over 2×6 walls) with r19 batts in 16oc stud bays, but i’m starting to become very skeptical of fiberglass batts. are they really that bad? should i be looking at other alternatives to filling stud/rafter-bays? will canned foam between batts and lumber make things better? this place will be my livelihood, so i’m trying to build for durability and efficiency, but cost is something of an issue.
also, the shop may only be heated to 50 degrees in the winter, but often brought up to 70 for extended work periods. is this temperature cycling a potential moisture issue?
i’m a perfectionist and i’m doing all the work myself, so i’m fine doing lots of detailing. i’m also vehemently anti-air-conditioning. this isn’t phoenix.
regards – ian.
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