Is a WRB on both sides of the foam okay?
I’m re-assembling a wall to change the windows from innies to outies, and to add a rainscreen gap. To do this, I have to remove the 3/4″ polyiso foamboard in order to remove the windows (foamboard is on top of the flanges). The foamboard is glued to asphalt paper with foamboard adhesive, and probably won’t come off without damaging the foamboard. My plan is to reinstall the paper/foamboard combo to the sheathing, then put new housewrap over the foamboard, which will mean I have a WRB on both sides of the foamboard. I presume this is okay, but since it’s unusual, I felt I should check with the experts first. Thank you very much for your help.
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