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rihal1958 06-28-2012 11:31 AM

Rigid Foam on attic floor?
I need extra insulation in my attic which is a cold space, I was thinking of putting down the rigid foam on the floor surfaces and screwing it into the sub floor to help boost the insulation. Does anyone know if this is a good option..

Windows on Wash 06-28-2012 12:34 PM

I must be covered with a proper thermal barrier in most cases and why use rigid foam where blown in cellulose would work just fine?

AGWhitehouse 06-28-2012 02:01 PM

+1 with WOW...go with a blow-in or batt. product and you can cover it all with a tyvek like material (class III vapor retarder MAX.) to help mitigate air movement through the fibers. It is cheaper too!

Gary in WA 06-29-2012 12:11 AM

1. Where are you located?

2. Is there HVAC in the attic?

3. Do you plan on storing household goods up there?


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