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Cleaning Mold on Wood
The decision to clean and remove mold depends on many factors. In general, visible mold growing on surfaces where people may come in contact with it should be cleaned and removed.
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Lumber Storage
Recommended protection and outside storage procedures for lumber dealers and contractors. 4 pages
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Lumber Storage (Spanish)
Spanish language version of WWPA's Lumber Storage technical sheet. Recommended protection and outside storage procedures for lumber dealers and contractors. 4 pages
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Mold, Housing and Wood
Explains why and how mold grows on nearly any material, including wood; steps that can be taken to prevent, control and remove mold; and current scientific information about the health effects of mold. 12 pages. (Revised July 2017)
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Preventing and Controlling Mold
Molds are part of the fungi kingdom and all fungi have four basic requirements for growth: suitable temperature, oxygen, food and moisture. Controlling moisture offers the best opportunity to prevent mold growth on lumber and wood products.
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Prop_65 Lumber/Product Warning Sign
8.5" x 11" .020 Mil Polystyrene Sign developed with the assistance of the California Attorney General's Office and the Office of Environmental Health Hazard Assessment to comply with the new Prop 65 warning sign requirements for lumber/wood products operative on August 30, 2018. Manufacturer, producer, packager, importer, supplier, or distributor of lumber/wood products sold to California consumers must comply with the Prop_65 requirements or risk fines and litigation. For more information about California Proposition 65 notification requirements, visit the WWPA website at http://www.wwpa.org/resources/california-prop-65-wood-dust
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Unseasoned Green Lumber
Seasoning requirements, shrinkage considerations, advantages for framing, handling requirements and how to avoid problems. 4pages
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What is Mold?
Molds are part of the diverse group of organisms called fungi, which include a wide range of species from tiny molds to large mushrooms. Fungi are part of nature's recycling system and play a key role in breaking down organic materials such as plants, leaves, wood fiber and other natural materials. Fungi extract food from organic material, and they grow and reproduce by way of spores.
