Accoya is an eco-friendly pine that has undergone a process called acetylation, which essentially uses really strong vinegar, heat, and pressure to transform naturally occurring hydroxyls (which cause shrinkage and swelling over time) in the wood into acetyl groups. The resulting wood is chemical-free, durable, stable, insect and pest repellent, and moisture resistant, and it won’t shrink or swell. Accoya has limited distribution around the country; a map of U.S. distributors can be seen on its website. Pricing varies by distributor. accoya.com
