Is an air space between a ceiling and SIPs a problem?
I have a timber roof system that goes like this.
plywood with a flooring glued to it and fastened down on top of the timber rafters
suredeck membrane (to protect the plywood) and double as vapour barrier
2×6 strapping on top of the plywood to facilitate electrical
8 1/8″ sips
synthetic membrane and peel stick for eaves protection
Should I be concerned about the 1.5″ space between the top of plywood and bottom of sips.
We are going to be extra ornery about air sealing the sips.
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