Southern Pine Inspection Bureau


Since 1915, SPIB has provided grading rules, training, production surveys, and other services to ensure product integrity and build a sustainable future for the industry.

Make things easier by using our product locator

The SPIB mark represents quality assurance and reflects our commitment to lead the industry in exacting standards, thorough training, and innovative application of advanced technologies to ensure the integrity of softwood lumber products.

Use our product locator as a tool to find the quality products you are looking for at the nearest place to you.

Email Sign Up

Want to keep in touch?

Stay up to date with SPIB training classes and more by signing up to our email list.

Training Go to Courses

Take Advantage of Our Advanced Training Classes.

SPIB online training coursesThese training courses include content to enhance learning with videos, photos, and diagrams, and also features interactive activities that encourage learning. This supplemental content provides ways for users to keep learning with information that is different from the core content.

Our Blog See More →

Retraining Your Lumber Graders in a New Environment

Date Published 05/11/2015

Keeping a competitive edge means training and retraining your lumber graders. You may want to consider a little different approach when new methods or equipment like grade scanners are introduced that requires new skills and/or when employees that were previously trained in a different situation are lost. Fully automated grading machines are fast becoming the Continue reading..

Shakes, Checks and Splits in Dimension Lumber

Date Published 04/15/2015

What is the difference between a shake, a check and a split? They are similar in that they all are separations lengthwise in the grain of the wood; however, each has a different origin and a different effect on the grade of dimension lumber. First, let’s look at the definition of each. Shakes Shakes are Continue reading..

Learning to Grade Softwood Dimension Lumber

Date Published 04/08/2015

What is Dimension Lumber? We have all seen buildings being framed with lumber. Do you know what type and grades of lumber are used in this framing process? Sometimes referred to as “dimensional lumber” or “framing lumber”, this wood is the mainstay of the housing industry in the US and Canada. Dimension lumber, as this Continue reading..