LP® SolidStart® LSL can help reduce labor and material costs, as well as the risk of callbacks. It can be used for a variety of applications, including roof and floor beams, door and window headers, wall framing, truss chords, rim board, and stair stringers. LP Solidstart LSL installs like traditional lumber, but is straighter, stronger, and can handle longer spans. LP SolidStart offers grades of up to 1.75E, the industrys highest grade of LSL, and it is backed by a Lifetime Limited Warranty.