Lumber and Building Materials Dimensional lumber of all sizes, drywall, insulation, and more! We can provide all your building materials! If we don’t have it in stock, we’ll get it for you! At Stillwater Lumber, we’re your one-stop building materials resource. Fasteners and Screws Glulam, engineered wood, and timber products Lumber and OSB Logs, Lumber & Panels American-made lumber and other wood by-products.