Wood Decay (Hardwood Flooring)

Floor Detective® Claims and Conditions Guide

Summary

Wood decay in hardwood flooring is a moisture-related biological deterioration condition involving fungal breakdown of the wood structure. Decay develops when wood remains exposed to sufficient moisture and oxygen for extended periods, allowing fungi to digest structural wood components such as cellulose and hemicellulose. As deterioration progresses, the wood may lose density, stiffness, and structural integrity, resulting in softened, weakened, brittle, or deteriorated areas. Damage may remain concealed beneath intact finishes or flooring layers until advanced stages develop. The condition may occur alongside or be confused with other biological conditions such as Termite Damage and Powderpost Beetle Infestation. The presence of decay does not independently establish when deterioration began, whether fungal activity remains active, or whether moisture exposure is currently ongoing. Proper evaluation requires correlation between material deterioration, moisture history, environmental conditions, and biological indicators. Wood decay reflects moisture-related biological deterioration within the wood structure rather than manufacturing defect or ordinary finish wear. See also Water Damage and Hardwood Floor Problems for broader context.

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