Ashton Lewis Lumber s Southern yellow pine flooring is precision-milled with a Weinig moulder to an architectural quality. The company produces a tongue and groove hollowback and tongue and groove kerfback flooring in all sizes. There are three lines in the company s finishing mill, which allows Ashton Lewis to complete multiple product shipments on the fly. Ashton Lewis Lumber is located in Gatesville, N.C., located in a region that grows some of the densest Southern yellow pine in the United States.