Grades of Western Red Cedar Pattern Siding
Clear Grades of Western Red Cedar Pattern Siding
| Grade | Description | Grading Rule Paragraph1 |
| CLEAR HEART |
|  | The highest grade. Includes only pieces with
heartwood on the exposed face. Many pieces
completely clear, others have minor
imperfections that do not detract from their
fine appearance.
| NLGA 200a
WCLIB 102-b |
| A CLEAR |
|  | Permits somewhat more imperfections than
Clear Heart but the grade is still restricted to
pieces with excellent appearance. Typically
sold with a percentage of B grade
(NLGA 200c/WCLIB 102-d).
| NLGA 200b
WCLIB 102-c |
Knotty Grades of Western Red Cedar Pattern Siding
| Grade | Description | Grading Rule Paragraph1 |
| SELECT KNOTTY |
|  | Available kiln-dried or unseasoned. Knots are
sound and tight. Typically sold with a
percentage of Quality Knotty grade
(NLGA 204b/WCLIB 111-f).
| NLGA 204a
WCLIB 111-e |
| PROPRIETARY GRADES* |
|  | Designed to meet appearance requirements
for cedar sidings and trim. Ask your WRCLA
distributor for details.
*Manufacturers may market their own proprietary grades | NLGA N/A
WCLIB N/A |
1NLGA – National Lumber Grades Authority
WCLIB – West Coast Lumber Inspection Bureau