Engineered Wood Floor Systems (Canada)

Plywood, oriented strand board (OSB) and other engineered wood products offer dependable performance and design flexibility for a variety of structural floor systems.

This publication is designed for: designers, builders, contractors, engineers, architects in Canada

This publication provides specification recommendations for plywood and OSB floor system under carpet and pad, hardwood flooring, lightweight concrete, vinyl and ceramic tile. It also includes options for floor systems with thicker sheathing panels and describes the APA Glued Floor System.

Key sections include:

• Metric conversions for panel thicknesses and typical span ratings

• Table for floor panel specification based on finished floor installation

• Combined subfloor-underlayment single-layer flooring

• Example APA panel trademark

• Minimum panel thickness or panel mark for floors

• Combined subfloor-underlayment panel under carpet and pad

• Thick flooring panels

• The APA Glued Floor System

• Panel subflooring

  • Under hardwood flooring

  • Under lightweight concrete

• Plywood underlayment under resilient flooring, glued-on carpet and ceramic tile

  • Regular grades

  • Custom grade underlayment

• Subfloor and underlayment under ceramic tiles

• Panel stair treads and risers

• APA performance rated rim board

• Heavy duty plywood floors

Published by APA — The Engineered Wood Association.