air leaks

Why Adding Attic Insulation Didn’t Fix Your Cold Rooms

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Why Adding Attic Insulation Didn't Fix Your Cold Rooms

Last Tuesday, I got a call from a homeowner in South Minneapolis who’d just spent $3,200 having a contractor blow R-60 cellulose into his attic. He was frustrated. His master bedroom was still cold. His energy bill barely budged. And when I climbed into his attic with a thermal camera on a 15-degree January night, … Read more

Duct Mastic vs. Tape: Why One Fails and One Lasts

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Duct Mastic vs. Tape: Why One Fails and One Lasts

Last month, I was called out to a home in the suburbs for a comfort complaint—the upstairs bedrooms were 8 degrees warmer than the downstairs in summer, and the homeowner’s energy bill had jumped $40 a month. When I opened the attic to inspect the ductwork, I found something I see at least twice a … Read more