Transport coefficients for six log and lumber end coatings

Moisture transport coefficient measurements were done to compare six log and lumber end coatings applied to pine, maple, hemlock, and oak substrates. Uncoated control samples were also tested for comparative purposes. The transport coefficient measures the ability of a coating to slow moisture loss from the wood and is indicative of the coatings efficiency in retarding shrinkage-related end-checks and splits. The transport experiments showed that all of the coatings were effective in reducing the moisture loss from wood when compared to uncoated control samples. When the coatings were compared statistically, it was found that no significant differences existed among the commercial log and lumber end coatings.

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