ROSEBURG FOREST PRODUCTS CO. (8140-2031:0003)
This is a listed siding assembly. Listing 8140-2031:0003. This site cites OSFM BML. Match the model and orientation.
Can you use it here?
Enter your ZIP to see which local requirement this meets.
Roseburg DuraTemp lap-edge siding is listed for wildfire-area walls as a four-ply panel over CDX plywood sheathing.
OSFM number 8140-2031:0003 describes APA-certified DuraTemp siding 15/32 inch thick, with 8-inch groove spacing and 3/8-inch groove width. The required CDX plywood backing is also 15/32 inch thick. The matching thickness figures belong to separate layers: the siding panel and its sheathing.
The handbook specifies that backing and refers construction details to Roseburg's instructions and product data sheets. It does not offer direct-to-stud attachment as an alternative for this DuraTemp description, and it names no test protocol. When reviewing a wall detail, preserve the four-ply panel, lap edge, groove profile and plywood backing together. Confirm the exact DuraTemp listing in GOVmotus so that a different thickness or edge profile does not enter the specification under the shared product name.