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American Wood Council

Does the Energy UA Calculator have 7/16 OSB?


No, it just has 3/8” because there isn’t a significant difference in R-Value and thus resultant U-factor. At an R-value of 1.25 per inch, the difference between 7/16” OSB and 3/8” OSB is around 0.08 of an R-value. This isn’t enough to make a difference for most walls.


The following FAQ is based on the presentation of BCD600 – Meeting Residential Energy Requirements with Wood-Frame Construction.

 
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