Western red cedar is sold by the “grade” or quality of the milled lumber. When a tree is logged it is transferred to the lumber mill and sorted into separate piles depending on its’ quality. This separation allows the mill to take all the logs of a specific grade and mill them together saving time. The grades are separated by the quality of the wood which basically means knotty cedar or clear cedar. The knotty grades are used for fencing, decking, and structural support where the knots do not detract from the aesthetic look of the project. The clear grades are used when a more clean, finished look is desired whether for indoor paneling or outdoor siding and decking.