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DaVinci Handsplit Shake Siding is listed for wildfire-area walls with specified shake exposure, fire-retardant plywood, barrier, and fasteners.
Although the company name says Roofscapes, listing 8140-2272:0501 covers siding. Each shake is described as 8–10 inches wide and 18 inches long, with a 5/8-inch butt thickness. Maximum exposure is 8 inches. The supporting assembly uses 1/2-inch pressure-treated fire-retardant plywood and an ASTM D226 Type 1 water-resistive barrier, with 6d, 1.75-inch siding nails spaced 7–10 inches apart.
The September 2025 OSFM WUI handbook assigns this wall product to category 8140 and records SFM 12-7A-1 as its test protocol. A siding detail therefore needs to show more than the shake's appearance: exposure, backing, barrier, and nail schedule all appear in the listed design. Confirm current listing status and follow DaVinci's installation, maintenance, and operations guide for the complete product details.
Documented attributes
Each value below points to its field-level manufacturer, official-listing, test-report, or standard-body evidence.