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Foam on roof exterior and blown cellulose in attic?

IronTough | Posted in General Questions on

Hi all,

The price of roxul has me looking at other options, but i already put 6″ of rigid foam on my roof exterior. 

If i blow cellulose into my attic, there will be an air gap between it and the roof rafters… But that’s fine right? The top of the cellulose and the bottom of the foam will be the same temp but it will act as one layer of insulation… Right?

I will keep the right ratio of exterior R value to prevent moisture.

Any issues in not thinking of?

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  1. matthew25 | | #1

    Is this a fully sealed attic without ventilation?

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