View Full Version : What R-factor for duct
06-22-2005, 09:25 PM
What R-factor whould your recomend for duct in a Houston, Texas attic?
06-22-2005, 09:39 PM
Sorry, don't have my code book at home with me, or I'd tell you what the minimum code requirement is for your area.
Your contractor should know.
dan sw fl
06-22-2005, 10:17 PM
R-6 should be Standard.
I suspect that R-8 duct would not be in common usage.
06-23-2005, 01:10 AM
R8 or more! the biggest $$ in the labor -- savings from now on --
be sure all joints & seams have mastic first!
06-23-2005, 08:42 AM
The highest you can find, period.
Lowes has foil-wrapped r-8 off the shelf.
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