Data File: Selection, Installation and Preparation of Plywood Underlayment

Underlayment provides a smooth base for carpet, tile, sheet flooring and other types of finish flooring. This publication provides recommendations for the installation and preparation of underlayment under finish flooring in residential and light commercial applications. Recommendations are also provided for the selection of APA plywood Underlayment, a plywood panel grade in accordance with PS 1.

This publication is designed for: builders, contractors

This publication describes APA plywood Underlayment and contains several tables, figures and installation tips.

Key sections include:

• Installation of APA plywood Underlayment

• Recommended plywood grades for underlayment applications

• Selecting underlayment

• Typical panel floor specifications based on finish floor installations

• APA underlayment fastening recommendations

• Handling underlayment

• Preparing the subfloor

• Installing and preparing underlayment

• Selecting and applying resilient floor covering

Published by APA — The Engineered Wood Association.