Find the certification marks, APA Product Reports®, standards, and technical resources you need to verify engineered wood products and code compliance.
APA Product Certification helps you verify that engineered wood products have been manufactured under a rigorous quality assurance program that includes ongoing testing, facility audits and manufacturing oversight. The APA trademark is a globally recognized mark of product quality and compliance.
APA Product Evaluation Services provide authoritative documentation that engineered wood products comply with applicable building codes and industry standards. APA Product Reports® are backed by rigorous testing, inspection and technical expertise.
Find standards, technical guides, system reports, code references and other publications that support product evaluation and code compliance.
Questions about product certification, APA Product Reports®, standards or code compliance? The APA Help Desk provides expert guidance to help you interpret requirements and verify engineered wood products with confidence.
Technical Guides - E30
This publication provides a comprehensive overview of engineered wood construction systems for residential, commercial and industrial buildings
Standards - L870
This publication is the national standard for performance requirements and marking plywood for construction and industrial uses.
Standards - S350
Performance requirements, adhesive bond performance, panel construction and workmanship, dimensions and tolerances, marking and moisture content of wood structural panels.
Construction Guide - Z725
This publication discusses span ratings, installation details, cantilever designs, architectural specifications and engineering design properties for APA Performance Rated I-Joists
Technical Topic - TT-100
This publication describes the use of portal-frame design in engineered applications and as bracing in conventional light-frame construction
System Report - SR-405
This system report provides guidance on fire protection of floors constructed with prefabricated wood I-joist assemblies that comply with 2015, 2018, 2021 and 2024 IRC updates
Technical Guides - W305
This publication is a guide to cost-effective fire-rated wood and wood structural panel systems that meet code requirements
Data File - D350
This publication provides recommendations for the use of APA rim board in conjunction with fire-rated wall/floor assemblies, based on the US Forest Product Laboratory testing