Roof Construction (Canada)

Plywood, oriented strand board (OSB) and other engineered wood products offer dependable performance and design flexibility in a variety of structural roof systems. When choosing the products and design for roof construction, it is important to define the predicted loads and the structural requirements for the roof, and select appropriate roof sheathing and installation details.

This publication is designed for: builders, designers

This publication provides specific recommendations for plywood and OSB roof systems, including diaphragms, fastening schedules and live load tables. It also contains installation recommendations for panel roofs.

This publication is for use in Canada.

Key sections include:

• Roof construction

• APA panel roof sheathing

• Preframed roof panels

• Long span systems

• APA panel soffits

• APA panel roof diaphragms

• High-load diaphragms

• Example APA trademarks

Published by APA — The Engineered Wood Association.