Laminated Strand Lumber (LSL) is the latest engineered wood product to come onto the market. This revolutionary product is used for a broad range of applications including rim board, millwork and window, door and garage door headers, as well as for many industrial uses. New uses for this product are still evolving, including the use of LSL for vertical members in commercial applications where the framing member heights are long, and the wind loads are substantial.
LSL resembles oriented strandboard in appearance because like OSB, LSL is made from long strands coming from fast-growing aspen or poplar. However, unlike OSB, the strands are arranged parallel to the longitudinal axis of the member. Like other engineered wood products like LVL and PSL, LSL offers predictable strength, outstanding weatherability and dimensional stability that minimizes twist and shrinkage.