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Subfloor Preparation to Receive Finish Flooring

The subfloor is part of a system that includes framing members, connectors and a subfloor adhesive. The final condition of the floor, including flatness and the surface texture of the subfloor, depends on many variables.

This publication is designed for: builders, contractors, designers

This publication addresses common subfloor challenges that arise during construction, including moisture management, surface irregularities, and proper fastening techniques. It covers the differences between structural plywood and OSB subfloors, when sanded underlayment may be required, and how to address issues such as panel ridging, uneven framing, and weather exposure. The publication provides recommendations that can help reduce callbacks, prevent floor squeaks and ensure finish flooring performs as intended.

Published by APA — The Engineered Wood Association.

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