SPF lumber is softwood that has fewer knots but with growth rings. The majority of softwoods are graded into various grades labelled A through D. The SPF stamp indicates the lumber’s species. It stands for spruce, pine, and fir. SPF…
SPF lumber is softwood that has fewer knots but with growth rings. The majority of softwoods are graded into various grades labelled A through D. The SPF stamp indicates the lumber’s species. It stands for spruce, pine, and fir. SPF…