“Gree-Dex” Grade Specifications

A product innovated by Black Locust Lumber Inc.

Premium Grade:

This product comes from the “Best of the Best” Black Locust grown in the Eastern USA. Each individual piece is carefully inspected to insure premiere, quality, durability and appearance. Black Locust is well known for its outstanding weather durability, yet it is 100% natural and chemical free. It is also known for its numerous characteristics, such as knots, mineral streaks, checks and bark insertions. To insure premiere appearances, only the most appealing ones are admitted in this grade, giving you the most gorgeous appearance with outstanding durability. The most beautiful knots, 3” in diameter and less are admitted to show the real beauty of this species. Minor mineral streaks and small bark insertions are also admitted, giving you the satisfied feeling of natural characteristics. Checks less than 1/12 of the board length are also admitted.

#1 Grade:

Each individual piece is also carefully inspected to insure quality and durability. This is a very popular product which is noted for its outstanding durability without the premiere price. All sound knots are admitted in this grade. All other characteristics that do not affect the duration of this product are also admitted. Small grub holes are admitted.

Important Grading Information:

Because Black Locust was once living, no two pieces of wood are alike. The complex mix of characteristics that distinguish one sampling of wood can be determined by the genetics of the species. These characteristics may be common to all Black Locust, or to the individual circumstances of growth, soil type or climate; therefore, specific and exclusive to one sample. Variations in color, grain pattern, and presence or absence of knots contribute to the character and visual interest of wood.

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Decay Resistance Of Black Locust Wood - U.S. Dept. Of Ag. Report

This document is one of the most comprehensive assessments of the durability of Black Locust wood.

Download a PDF of this report