What Is J-Grade Lumber, and What Are Its Uses?
J-grade lumber is commonly produced from SPF—spruce, pine, and fir—softwoods. Canadian SPF lumber is widely supplied to the Japanese market, where appearance and consistent quality are important. SPF is a commercial grouping of spruce, pine, and fir species with similar characteristics. It is not a separate wood species. J-grade lumber is typically selected for its … Read more