APA Performance Rated Panel Subfloors Under Hardwood Flooring

Installing hardwood flooring over wood structural panel subfloors requires careful attention to panel selection, proper installation techniques, and moisture management to ensure long-term performance and prevent common issues like squeaking, buckling, or gaps.

This publication is designed for: builders, contractors

This publication provides comprehensive guidance on using performance-rated plywood and OSB panels as subfloors under 3/4-inch hardwood flooring, addressing the critical factors that contribute to successful installations.

Key sections include:

• Summary of performance of APA-rated panels

• Panel specification and subfloor span requirements

• Installation of subfloors with fastening details

• Preparation of subfloors for hardwood flooring installation

• Hardwood flooring installation recommendations

Published by APA — The Engineered Wood Association.