Ice Dam
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Henri Fennell’s Advice on Cathedral Ceilings
It’s all about the air barrier
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Solving an Ice Dam Problem With Exterior Rigid Foam
Eight inches of polyiso, a second layer of roof sheathing, and new shingles cost the same as a standing-seam roof without any insulation
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Fixing a Poorly Insulated Roof
A huge air conditioner and roof heating cables can’t overcome basic design flaws
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Just Say No to (Swiss) Cheesy Attic Floors
Ceilings with lots of air leaks are an invitation for moisture problems in winter
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Heading Off Ice Dams
An Ontario homeowner looks for suggestions on how to stop ice damming before another winter sets in
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A Socioeconomic Context for Ice Dams
As another New England winter approaches, a few thoughts on one of the season's scourges
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Ice Dam Basics
How ice dams form, how to prevent ice dams, and what to do if you have an ice dam right now
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Why I Hate, Hate, Hate Skylights
Skylights have a low R-value, provide cold surfaces for condensation, interfere with roof venting, and contribute to ice dams
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The Street-Side Energy Audit
Snow-melt patterns on your roof can reveal where heat is escaping from your home
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All About Attic Venting
We vent attics for four reasons, and all four goals can be better achieved by adopting measures other than attic venting
