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Materials & Specificationsaka: PT lumberaka: FRTWaka: fire retardant treated wood

Treated Lumber

In Plain English

Lumber treated with chemicals to resist specific hazards like rot, insects, or fire.

Definition

Treated lumber is wood that has been processed with preservative chemicals, fire retardants, or other treatments to enhance its performance in specific applications. Pressure treated lumber resists decay and insects. Fire-retardant treated lumber (FRTW) is used where the building code requires non-combustible construction but wood is permitted.

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