Engineered lumber goes outdoors
Available in headers, beams, and posts, iLevel makes Wolmanized PSLs that resist rot and insects
To help builders make stronger outdoor structures, iLevel (www.ilevel.com) has expanded its line of Parallam PSLs (parallel-strand lumber) to include Wolmanized PSLs that resist rot and insect infestation.
Although the heartwood at the center of a typical 6×6 is too dense to absorb chemical treatment, the randomized veneers of a PSL, most of which are sapwood, can be treated more easily, and the treatment penetrates to the core.
Available in headers, beams, and posts, Wolmanized PSLs are well-suited for decks, carports, or overhanging roofs, and they can be painted or stained. Due to the treatment process, Wolmanized PSLs have a slight reduction in strength compared to conventional PSLs, so plan accordingly. Expect to pay 21/2 to 3 times more for the Wolmanized PSLs than you would for a conventional PSL.
Photo: Courtesy of iLevel