Fire-Retardant-Treated (FRT) Plywood

Fire-retardant-treated (FRT) plywood offers fire safety advantages that allow it to be used in building applications where standard combustible materials are not permitted. While building codes classify FRT plywood as combustible, its low flame-spread characteristics and smoke development ratings enable safe use in structures that would otherwise require noncombustible construction.

This publication is designed for: architects, engineers, designers, building code officials, builders

This publication provides comprehensive guidance on FRT plywood specifications, treatment standards, and reference tables with code locations and applicable standards.

Key sections include:

• Construction types and building applications

• Fire-retardant treated plywood definition and flame spread testing

• Fasteners for fire-retardant-treated plywood

• Burn-through resistance and design capacities of FRT wood

• Treating process and test standards

• Code-approved applications for FRT plywood

• Identification requirements for fire-retardant-treated plywood

• Reference tables for code locations and applicable standards

Published by APA — The Engineered Wood Association.