Cedar Breather under metal roofing?
Hello helpful people,
We have been mulling over our unvented vaulted roof assembly and wondered if using cedar breather is redundant. The assembly is Huber Zip sheathing, three inches of polyiso above deck, 2″ wide furring made from ripped Avantech spaced 12″ apart over the foam and a metal standing seam roof. Do we need cedar breather between the metal roof and furring as well or will there be sufficient circulation between the furring strips to prevent issues with condensation? We are aware of the 40/60 insulation above and below deck recommendation for this kind of roof assembly and have planned accordingly.
This is a home in Virginia.
Lisa and Paul
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