Exterior foam application and window details
Im in Phoenix about 6 months away from starting my build. I was thinking about upgrading my exterior foam from 1.5″ to 3″ EPS. The window detailing is where my question lies. I’ve read the articles here, but we will be using mostly EFIS for our exterior cladding (with some stone veneer). My thought was to nail the window to the exterior after the OSB and Tyvek stucco wrap just like you would without using foam. Then add the 3″ of EPS right up to the edge of the window and just add the EFIS to the 3″ return created. For the stone veneer we will just frame out the window the 3 inches. It adds a little thermal bridging but that should be OK for my Pretty Good Home. Do you see any issues with doing this installation?
I will be using Intus double casement windows which open to the interior so Im not concerned about clearance issues to the exterior.
Thank you for your opinions!
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