R. S. Monger & Sons, Inc. is a locally owned 4th generation family business in Harrisonburg, Virginia specializing in building materials. We offer a wide variety of construction and finish lumber, as well as Marvin, Integrity, and Jeld-Wen windows, Masonite, Thermatru, and PlastPro doors, Timbertech decking, Mid Continent Cabinetry, Nichiha fibercement siding, Dow insulation, Cellwood vinyl siding, as well as a variety of other specialty products. R. S. Monger strives to help customers from small decks to custom homes to large commercial products. We stay up to date on green building products, and are FSC Chain of Custody certified for handling certified lumber for LEED projects.