Recent Articles
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My First Energy Audit
This old house was so leaky that the blower door couldn’t depressurize it to 50 pascals
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Energy Audits in New England
Here, buildings are both old and cold
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The Worst House I Ever Audited Was Built in 2008
It was a nice home — except for the damp basement, the dripping windows, and the leaky tongue-and-groove ceiling boards
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What is Thermal Bridging?
Why R-19 is never R-19
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Is R-Value Dead as a Dodo?
The R-value of your insulation is just one number — and it’s not enough to tell you everything you need to know about your wall’s thermal performance
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Blower Doors Have Become Essential
Use one to measure a building’s airtightness, to locate leaks, or to comply with a green building program
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Major Thermal Bypasses
Don’t worry about the cracks around your windows until you’ve sealed all of the big holes in your house
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The Flash-and-Batt Method
This oddly illicit-sounding insulation system is becoming more common
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Exterior Insulation Is Like A Sweater For Your House
A layer of rigid foam will keep your wall sheathing warm and dry
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Heat Loss from Air Is No Big Deal, Right?
No — it's a huge deal, especially if your ceiling is peppered with recessed can lights
