Temporary Expansion Joints for Large Buildings

Moisture exposure during construction of large buildings is a common cause of dimensional expansion. When floor and roof decks span significant distances, accumulated panel expansion can lead to structural misalignment and compromised door and window openings.

This publication is designed for: builders, contractors, designers

This publication provides practical guidance on when and how to incorporate temporary expansion joints into floor and roof decks, including recommended spacing intervals, fastening strategies, and construction sequencing. Detailed figures illustrate floor and roof expansion joint details, as well as techniques for managing water drainage on exposed floors during construction.

Published by APA — The Engineered Wood Association.