Humboldt Sawmill Exterior Class A Fire Retardant Treated Redwood Siding offers the beauty of real redwood and the enhanced safety and fire protection of a Class A rated product. Designed for exterior applications, available in 1×6 and 1×8 siding profiles in a redwood BEE grade, and treated with a clear fire retardant formulation from Hoover Treated Wood Products, EXTERIOR FIRE-X®.
Applicable code references include:
- Surface Burning Test, ASTM E84 / UL 723
- Extended Surface Burning Test, ASTM E2768
- Accelerated Weathering Test, ASTM D2898
- California Building Code Chapter 7A, WUI and IWUIC Compliant
- Kiln Dried After Treatment (KDAT), IBC 2303.2.8
- California Fire Marshal Building Materials Listing, (2520-1701:0100) & (2580-1701:0101)
- Pressure Process, IBC 2303.2.1
EXTERIOR FIRE-X Product Documentation:
For availability, pricing, or to place an order, please contact your Humboldt Sawmill Sales Representative.
