Low-Slope Roof in a Cold Climate
Mostly looking for confirmation/advise on insulating a low slope roof (with a parapet) in cold climates.
I am in Vermont, zone 6, with a rubber membrane roof 1/4″ over 12″
Ive been doing some research on best techniques for insulating (unvented) and feel an 8″-9″ layer of closed cell SPF on the underside of the roof sheathing will best fit my needs. Is this thick enough to halt any potential dew point concerns?
Please reference my detail attached for a visual. I should also note that this is new construction, nothing has been built yet.
Thanks in advance,
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