Door opening on slab with FPSF
I’m building an insulated shed in New Hampshire on a frost protected shallow foundation, and I’m trying to figure out the best way to install my exterior doors.
The framing studs are flush with the outside of the foundation, so the zip sheathing is 7/16″ proud. I’m about to mount some standard exterior doors into the rough openings using third-party PVC sill pans. What’s the best way to bring the foundation face plane flush with the sheathing? My first stab at a solution is to rip about 3 inches of 1/2″ pressure treated plywood and tap-con it to the foundation, providing a nice stable support to the leading edge of the sill pan and threshold. I’d lower the top of the 2″ rigid foam insulation in that area.
Is there a better solution I’ve overlooked? I can’t find any illustrated details of door openings on FPSFs online. Thanks for your input!
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