Installation of Stucco Exterior Finish Over Wood Structural Panel Wall Sheathing

Stucco is a popular, low-maintenance exterior finish, but its performance depends heavily on proper substrate preparation. This publication explains how wood structural panel wall sheathing provides superior support for stucco applications, reducing cracking and improving long-term durability.

This publication is designed for: builders, contractors, architects, engineers

The guide provides detailed specifications for selecting appropriate APA Rated Sheathing products, including thickness requirements, span ratings, and orientation recommendations for different stud spacings. It covers fire-rated wall assembly options, explains proper installation techniques to prevent stucco cracking, and addresses special considerations for steel stud framing and multistory construction.

Key sections include:

• Wall sheathing advantages

• Benefits of wood structural panel sheathing under stucco

• Installing wall sheathing as a substrate for stucco

• Stucco application

Published by APA — The Engineered Wood Association.