Softwood Structural
#1 Grade
High-quality structural grade with excellent strength values and few defects
Standard: WWPA, SPIB, NLGARelative price: PremiumRank: 2
What this grade means
#1 grade structural lumber is a high-quality grade that provides excellent strength and stiffness values. It allows slightly more natural characteristics than Select Structural but remains a premium structural product suitable for most demanding applications.
Defects allowed
Small sound knots, slight wane, minor checks, tight grain slope
Typical uses
Floor joists, rafters, headers, beams, structural framing where appearance matters
Grade rules vary by species, region and grading agency. For structural work, use the grade stamp and governing code or an engineer’s specification—not appearance alone.
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