ESR-2436 Styrofoam SIS sheathing;
2.0 Uses “may be used as an alternative to the water-resistive barrier specified in IBC Section 1403.2 and IRC Section R703.2”
5.0 CONDITIONS OF USE “the Styrofoam SIS . . . described in this report comply with, or are suitable alternatives to what is specified in, those codes listed in Section 1.0 of this report, subject to the following condition:
5.1 The panel must be installed in accordance with the applicable code, this evaluation report and the manufacturer’s published installation instructions. In the event of a conflict between the manufacturer’s instructions and this report, this report governs.
5.2 The sheathing material must not be used as a nailing base.
5.3 Walls sheathed with the panels must not be used to resist horizontal loads from concrete or masonry walls.
5.4 When the panels are not used as braced wall panels as described in Section 4.2, walls must be braced by other materials in accordance with the applicable code.”
It appears the installation of stone veneer can comply if; all the panels are fastened in place as braced walls panels; the stone veneer is limited to 30 ft. plus an additional 8ft. for gable wall ends; flash as applicable around openings. The lathe is nailed or stapled to the wall studs per manufacturers guide maximum oc .
Mark K, new in 2009 IRC Table 703.4 fn W; references Sections 6.1 and 6.3 of TMS 402/ACI 530/ASCE 5.
Note Virginia amended R703.7; probably for the simplified wall bracing method is limited to a single story.
emphasis bold and italic font where added to address specific questions