For designers who prefer to work with wood exterior trim, Belco Forest Products has partnered with Lonza to develop a cost-effective wood-treatment process. ArmorCoat XT Wolmanized Exterior Trim starts with spruce/pine/fir lumber and adds Wolman AG, a waterborne preservative system developed to provide extended protection to wood from decay and termites in out-of-ground applications. ArmorCoat XT features a 20-year substrate warranty against rot, and Belco’s primer formula is also backed by a 20-year warranty. Check with your dealer for pricing.