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Controlling Decay in Wood Construction

Technical Note

Wood is one of the world’s most durable and versatile building materials, but it is vulnerable to decay fungi (or rot) that can compromise structural integrity.

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

This publication provides a comprehensive overview of the causes of wood decay and practical steps to prevent it. It covers the environmental conditions that enable fungi to thrive, how different wood products respond to moisture and the design/construction practices that keep wood dry and decay-free.

Key sections include:

  • Decay fungi

  • Fungi, molds and stains

  • Conditions that support decay

  • Temperature

  • Food

  • Oxygen

  • Moisture

  • Map – zones of potential for wood deterioration in the U.S.

  • Decay control in wood construction

  • Floors, roofs, walls, exposed application, storage, preservative treatment

  • Remedial actions

Published by APA — The Engineered Wood Association.

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