R-value
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A Fresh Look at R-Value
Marketers of radiant barriers and spray foam have a history of false statements about R-value
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The Ratio Rule for Hybrid Roof Insulation
Ensuring the right combination of R-values above and below a roof deck
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Does Poorly Installed Insulation Decrease R-Value?
Yes, and here's some guidance on just how much R-Value can be impacted by shoddy insulation work
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Understanding Thermal Numbers
Another explanation of R-, U-, K-, and C-values
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Misleading Energy Reports Used to Sell Spray Foam
A company in Pennsylvania is helping spray foam contractors skimp on R-value
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Understanding R- and Other Values
You have to pay attention to the numbers, but first you have to know what the numbers mean
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Five Cathedral Ceilings That Work
As long as you pay attention to minimum code requirements for R-values, these cathedral ceiling details can be used in all climate zones
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5 High-Performance Details
Architect Elizabeth DiSalvo shares a few of her preferred cold-climate construction details for foundations, walls, and roofs
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FAQ: Why Do Some Builders Avoid Foam Insulation?
Its chemical ingredients and embodied carbon are enough to push some builders to make another choice
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Three Code-Approved Tricks for Reducing Insulation Thickness
Savvy builders know that there are several legal ways to install less insulation than the minimum requirements in the prescriptive code table
