BST™ urethane is a one-part, trowel applied, tacking, moisture-cure urethane adhesive; this adhesive does NOT contain any water. Once cured, BST urethane is waterproof and is not adversely affected by exposure to moisture or water. When applied as directed for a moisture vapor membrane, Bostik BST urethane will reduce moderate amounts of moisture vapor transmission from the subfloor and prevent damages to engineered wood flooring caused by subfloor moisture.Information provided by Bostik |