Lumber Grades

YellaWood® is available in multiple lumber grades to meet the needs of any job.

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You can find the grade noted on the ink stamp that is applied by the sawmill. Most building supply stores stock only a few grades of lumber, but a wider variety of grades can be special ordered. Here are the most common YellaWood® grades and the differences among them.

Dimensional Lumber

Typically wood that is two or more inches thick is graded only for strength, denoted by #1, #2 and so on. And because stronger lumber has fewer and smaller knots, it's typically more attractive. So the general rule of thumb for lumber grades is this: the lower the number, the more strength and better appearance.

#1 Grade Lumber

  • Has smaller and fewer knots
  • Recommended for applications where high strength and good appearance is desired

#2 Grade Lumber

  • Has more knots and bark edges
  • Used mainly for non-appearance applications

Prime Grade

Prime grade products provide the same structural properties, but with an emphasis on appearance. So a 2 Prime (#2P) grade has the strength of a #2 grade, but will look more appealing.

Decking

A popular choice for decking is 5/4" (five-quarter inch) deck boards. These are graded for both strength and appearance.

You'll find deck boards in Standard and Premium grades, with Premium providing the best finish.