Spruce-Pine-Fir is a grouping of wood species that grows in both the northern regions of the U.S. and throughout Canada. The grouping includes species such as Balsam Fir, Red Pine, Red Spruce, Black Spruce, Engelmann Spruce, and Lodgepole Pine. Lumber manufactured from these species is commonly found in building supply stores throughout the U.S., identified on the grade stamp as either S-P-F or SPFs.
Most of the Spruce-Pine-Fir species is manufactured into 2×4, 2×6, and 2×8 products, which are used in the framing of homes as wall studs, roof rafters, and floor and ceiling joists. However, some of the grouping’s species are sawn into beams and used for both appearance and structural purposes in timber frame type construction.
Given its typical end-use application as framing material, the grades of lumber produced from Spruce-Pine-Fir species are based upon strength-reducing characteristics and not for appearance-grade type uses. Material sawn from these species have a wide variety of colors and textures.
The Spruce-Pine-Fir species are abundantly grown within the vast forested areas of the northern U.S. and much of Canada. Smart forest regeneration practices coupled with the prolific self-seeding nature of the species ensure their sustainability as a construction material for generations.
International Association of Certified Home Inspectors: Lumber Grade Stamps
Northeastern Lumber Manufacturers Association: Lumber Span Tables (Spruce-Pine-Fir South)
USDA Forest Products Laboratory: Wood Handbook
Western Wood Products Association: Western Wood Species Book