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Brown ACRE shiplap siding is listed with a wall assembly that includes OSB, Type X gypsum and overlapping roofing felt.
Modern Mill's 8140-2385:0001 listing describes tongue-and-groove siding composed of 40% PVC and 60% upcycled rice hulls. It names boards 1 inch thick in widths of 6, 8 or 10 inches. The listed material and brown color identify the ACRE configuration covered by OSFM.
The backing is part of that configuration: a single layer of 7/16-inch OSB, a single layer of 5/8-inch Type X gypsum wallboard, and 15-lb roofing felt with joints overlapping by 3 inches. Keeping the gypsum layer and the felt joint detail in the wall specification preserves conditions that a board-only description would miss.
OSFM identifies SFM 12-7A-1 as the test protocol. The handbook and retained BML description agree on the material proportions, board sizes and backing components. Before construction, check this exact listing in GOVmotus and use Modern Mill's installation instructions and product data sheets to complete the assembly details. The useful comparison is between complete proposed walls, including their backing, rather than between the siding faces alone.
Documented attributes
Each value below points to its field-level manufacturer, official-listing, test-report, or standard-body evidence.