u/txmirinyca2

Working on a Passive House in Climate Zone 5A. The plan is to use vinyl lap siding as the cladding, but we are struggling to determine the best way to install this, given that the wall assembly includes 3" of rigid foam board insulation between the sheathing and the siding.

We have been struggling to get installation guidance from vinyl siding manufacturers, as this installation with this thickness of foam is not explicitly called out in their technical materials.

Looking for recommendations on installation (e.g., should we use furring strips, nail directly into sheathing/studs through the foam, etc.) and recommendations on siding brands. Thank you in advance!