Lemieux Doors’ Torrefied Collection of premium exterior wood doors is backed by a 20-year warranty. It is the first of its kind in the wood door industry to undergo a protective torrefaction process. Torrefaction is an all-natural green process in which wood is heated over time to eliminate its tendency to rot. The torrefaction process makes wood more structurally stable and highly resistant to heat, cold and moisture. It is available in each of the company’s 10,000-plus design options.