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