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Old 05-25-2011, 02:07 PM   #26
Pilotdave
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Location: Grafton, MA
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Default Re: Sound Insulation

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Here's a quote from a website devoted to log homes:

"The R-value for wood ranges between 1.41 per inch (2.54 cm) for most softwoods and 0.71 for most hardwoods."

So 0.75" plywood would have an R-value of just over 1.
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