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APA - The Engineered Wood Association

The Leading Resource for Information About Engineered Wood Products™

What is gives you the tools you need to determine places around your house in need of inspection for typical moisture intrusion problems and offers simple steps to fix these problems. Routine home maintenance can prevent most of the moisture damage found in houses today.

The Web site is structured around the Ten-Point Protection Plan, which offers ten key areas of the home you should protect against moisture intrusion. While the Ten-Point Protection Plan offers a basic overview, this Web site provides detailed guidelines of what to look for in these ten areas of the house and simple solutions for some of the common problems that allow mold to fester. For ease of understanding, the ten areas of the house are subdivided into three categories: exterior, perimeter, and interior. Simply select an area of the home from the interactive house on the home page or through the left-hand navigational links to find the information you need. The superhero character of Dry offers tips and guidelines on how homeowners can be free from mold, personified by the character of Drip, who points out places particularly susceptible to moisture problems. is a program of APA – The Engineered Wood Association, a nonprofit trade association widely recognized as the authoritative source for information on structural wood products and their related construction applications. With over 70 years of experience, APA provides a rigorous quality inspection and testing program for all APA-trademarked engineered wood products, as well as offering more than 400 publications with the latest information on wood products and applications. APA staff scientists and engineers, recognized industry leaders, lent their expertise in wood maintenance to the new program. APA will continue to update the site as new science becomes available. Learn more about APA’s role at the forefront of the wood industry by visiting grew out of APA’s Build a Better Home program, which offers construction details and guidelines that builders should follow to ensure their homes can withstand moisture intrusion. The Build a Better Home program explains better building practices for foundations, walls, and roofs, and includes examples from a demonstration home at the U.S. Forest Products Laboratory in Madison, Wisconsin. Learn more about Build a Better Home by visiting

Because APA has no control over quality of workmanship or the conditions under which engineered wood products are used, it cannot accept responsibility of product performance or designs as actually constructed. Consult your local jurisdiction or design professional to assure compliance with code, construction, and performance requirements.