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R-factors of Wood, Brick, Fg per inch

Posted by Harold Kestenholz on August 12th, 2000 06:36 PM
In reply to You already see some discretionary comments.. by Steve Jones on August 12th, 2000 09:44 AM [Go to top of thread]

22 of 23 people found this post helpful

Sorry to interfere with your love of wood to bother you with facts from the National Bureau of Standards, Steve; but think about it - If wood was the best insulator known to man, all houses would be insulated with wood.

The R-factor of 1 inch of pine wood is 0.85
1 inch of brick is 0.42
1 inch of fiberglass is 3.0
The bigger the resistance number, the greater the resistance. that is why an 8-inch thick log is equal to the resistance of 3 inches of fiberglass and that is why the building codes require equivalent insulation.

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