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Forum: Conservation

01-08-13, 06:10 PM

Replies: 22

8" insulation in a 6" wall

Views: 15,738

Posted By Ryland

I can't find anything for 8" cavities, but...

I can't find anything for 8" cavities, but compressing R15 insulation by 1/2" it's Rvalue drops by R2 for each and every 1/2 that you compress it.

Forum: Conservation

01-08-13, 08:31 AM

Replies: 22

8" insulation in a 6" wall

Views: 15,738

Posted By Ryland

Compressing fiberglass insulation reduces it's...

Compressing fiberglass insulation reduces it's insulation value, so you will have a lower R-value if you use 8" of fiberglass in a 6" space.

What you can do is seal the stud spaces at the top,...

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