WDMA T.M. 2-99(09) Test Method to Determine the Short-term Anti-swell Effectiveness of Treating Systems is designed to measure the effectiveness of water-repellents in millwork preservative formulations in retarding dimensional changes of wood exposed to water. This test method is also used for determining if a commercial millwork preservative meets the requirements of WDMA I.S.4 Water-Repellent Preservative Treatment for Millwork. This standard was reaffirmed in 2009.
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