In Treatment Accoya treated lumber undergoes an acetylation process that alters the wood’s cell structure. As a result, sustainably sourced soft woods are converted into a durable decking product that the company says is resistant to fungal decay and insect attack. The modification process also is said to increase the board’s strength and dimensional stability. Various lengths and widths are available. Accsys Technologies. 972-233-6565. www.accoya.com.
Modified Wood Perennial Wood is Southern pine lumber that has been treated with an acetylation process that makes it tougher and more moisture resistant than unmodified softwood products, the company says. Available in components such as decking, stair treads, and posts, the product is three times more resistant to shrinking and swelling than unmodified lumber, according to the manufacturer. Eastman Chemical Co. 800-530-7495. www.perennialwood.com.
Pine Fresh Because of its widespread availability and affordability, pressure-treated Southern yellow pine is the most common wood decking option in the U.S. It has the highest density of all commonly used structural lumber species, providing good fastener-holding power and load-bearing capacity, the association says. The wood’s softness allows it to easily accept stains and finishes. Southern Forest Products Association. 504-443-4464. www.sfpa.org.
Change Up Thermory Wood has undergone a treatment using 20-year-old European technology. Instead of chemicals, the system puts American ash under intense heat and steam, which results in planks with a higher dimensional stability and lower equilibrium moisture content compared with conventional decking, says the company. It’s available in random lengths from 6 feet, 10 inches ?to 11 feet, 10 inches. Thermory Wood. 949-515-9501. www.thermoryusa.com. Circle No. 10.
Composite Sketch Made from 95 percent recycled materials such as plastic and wood scraps, the company’s composite lumber features the look of high-definition wood grains, exotic hardwood species, and comes in a variety of colors. The manufacturer says the low maintenance products will not warp, cup, or twist and will require no sanding, staining, or painting. The boards also resist fading, staining, scratching, and mold. Trex Co. 800-289-8739. www.trex.com. Circle No. 14.