R-value
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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, U, K, and C Values
You have to pay attention to the numbers, but first you have to know what the numbers mean
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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
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R-Value Advice from Building Science Corporation
Are the recommendations from a paper published in 2010 still valid?
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All About U-Factor
It’s not a simple topic, so get ready to untangle a few knotted threads
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What’s the R-value of Cedar Shingle Siding?
First, measure the siding thickness, taking into account the fact that cedar shingles are usually lapped
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Comparing the Properties of Insulation Materials
It’s time to update our summaries of insulation R-values and permeance ratings in light of researchers’ recent findings
