ASTM D 4446 - - 05 Standard Test Method for Anti-Swelling Effectiveness of Water-Repellent Formulations and Differential Swelling of Untreated Wood When Exposed to Liquid Water Environments

American Society for Testing and Materials (ASTM). Current edition approved May 15, 2005. Published June 2005. Originally approved in 1995. Last previous edition approved in 2002 as D 4446 – 02. 4 p. s test method is designed to evaluate the effectiveness of water-repellent compositions for retarding dimensional changes in coated wood submerged in water. It can also be used to measure the differential swelling of untreated wood when exposed to liquid water environments. The compositions tested are designed to be mixed until uniform and applied by brush, roller, dip or spray to an exterior wood surface.