How to insulate my attic — getting conflicting advice and going crazy!
Climate zone 4a, 1920s house with little insulation, so bills are high, drafts are strong, and humidity is low in winter. I’d prefer a conditioned attic as there is HVAC up there and we might finish it someday. I’ve gotten quotes for open cell and closed cell on the attic roof deck; each guy swears the other guy’s product will ruin my roof. Neither are quoting enough insulation to reach the recommended R value in my area. Batt insulation lady says she can’t insulate the roof deck because there’s no ridge vent and recommends making the envelope at the attic floor and piling insulation over the the ducts up there. It’s about time for a new roof, so I was wondering about rigid foam on top of the roof deck, but a local contractor acted like that was the stupidest thing he’d ever heard. It’s been so hard to figure what’s right— and we’re talking substantial $$ any which way— I’ve just been paralyzed. Any help appreciated!
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