Radiant barrier on Zip R-sheathing
Trying to finalize my exterior wall design. As of right now it’s going to be a 2×6 wall with Rockwool Comfortbatt for an R 23 rating in the cavity. I was then going to use ZipR with 1″ of rigid foam which touches the studs for a thermal break and an additional R6 rating. The ZipR is the main moisture and vapor barrier after it is fully sealed with their Liquid Flash system. I am looking to put a Radiant Barrier on the Zip on the Sun facing sides and perhaps the entire house that has a Perm Rating of 6. This will be under the Hardie Board siding which is attached to 3/4 inch furring strips for a rain screen.
My question is will a Perm 6 Radiant Barrier Wrap allow any moisture that get’s under it to dry fast enough in a climate zone 4, Western Tennessee, area to avoid any damage to the Zip Wall System?
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