Established in 1932, K-I Lumber & Building Materials offers a range construction-related products and services. The company offers a variety of products that include doors, decking, engineered wood and lumber. It also sells a range of insulated products that include foam sill sealers, insulated sheathing, house wraps, protective tapes and structural sheathing. The company manufactures various types of moldings, such as base, casing, crown and panel molding. K-I Lumber and Building Materials stocks a complete line of plywood, roofing and siding material. The company also supplies stair parts and truss-wall panels. It maintains a location in Fairborn, Ohio, and is headquartered in Louisville, Ky.