Westwood Millworks

Westwood Millworks is a Georgia-based manufacturer pioneering thermally modified wood in the United States. Since 2007, we’ve led the industry as the first domestic producer and remain the only group operating proprietary kiln technology designed and built in-house. Using only heat and steam—no chemicals—we transform sustainably sourced North American hardwoods, with about 95% of our species coming from the U.S, into durable, dimensionally stable materials for decking, siding, and cladding. Our ThermA Decking™ and ThermA Siding™ product lines are produced entirely at our Macon, Georgia facility, where we handle thermal modification, milling, and finishing under one roof. This ensures greater quality control, faster response times, and consistent performance for builders, architects, and distributors nationwide. Inspired by Nature. Perfected in Georgia.