Like most cladding materials, vinyl siding may be installed directly over and fastened through FPIS to the underlying wall framing or suitable substrate (see STEP 4). However, the vinyl siding wind pressure rating must be properly specified when installed over foam sheathing where the foam sheathing is the sole sheathing material on the exterior side of the wall material. In this specific case, the foam sheathing must also be rated for the required wind pressure resistance (see STEP 5A).
For specification and installation of vinyl siding over FPIS, refer to: