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Irresistible beauty.
Unparalleled fire resistance.

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Beauty of Redwood Logo

Beauty of Redwood

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Class A Flame Rating

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Sustainable

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Now even in wildfire-prone communities, builders can feature redwood’s exceptional charm and strength with the reassurance of a Class A flame spread rating.

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Ideal for WUI Communities


Redwood is a highly attractive, premium choice for decking and siding. ExteriorFireX™ treatment finishes clear to preserve redwood’s natural beauty while addressing WUI code requirements that demand fire-retardant treated wood be pressure-impregnated, not merely coated. The Class A flame spread rating means the treated redwood can better withstand direct flame exposure and resist ignition, so it won’t significantly contribute to wildfire spread.

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Exterior materials in WUI zones are required to pass ASTM E84 (UL 723) surface burning testing, typically conducted for 30-minute durations vs. the standard 10 minutes for interior materials. Hoover/Humboldt products are code compliant with the 2025 California Wildland-Urban Interface Code (CWUIC).

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Locally Harvested.
Sustainably Treated.

Humboldt’s Forest Stewardship Council® (FSC® C013133) certified timberlands and sustainable forestry practices ensure long-term forest health and carbon sequestration. Locally harvested and milled redwood reduces environmental impact compared to imported alternatives.

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