LAP SIDINGS
Lap sidings are supplied in a variety of patterns in clear or knotty grades and with a smooth or saw textured face Channel siding is a popular type of lap siding and is used whenever a rustic appearance is desired. A versatile siding, it can be installed vertically, horizontally or diagonally. In channel siding the profile of each board partially overlaps that of the board next to it creating a channel that gives shadow line effects, provides excellent weather protection and allows for dimensional movement. Channel siding is normally supplied in unseasoned knotty grades. The face side is saw textured. Commonly available sizes are 1 x 6 in., 1 x 8 in. and 1 x 10 in. Clear grades are manufactured to order. CLEAR GRADES OF WESTERN RED CEDAR PATTERN SIDING 
Grade : CLEAR HEART Description 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. Grading Rule Paragraph1 NLGA 200a 
Grade : A CLEAR Description 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). Grading Rule Paragraph1 NLGA 200b KNOTTY GRADES OF WESTERN RED CEDAR PATTERN SIDING 
Grade : SELECT KNOTTY Description Available kiln-dried or unseasoned. Knots are sound and tight. Typically sold with a percentage of Quality Knotty grade (NLGA 204b/WCLIB 111-f). Grading Rule Paragraph1 NLGA 204a 
Grade : PROPRIETARY GRADES* Description Designed to meet appearance requirements for cedar sidings and trim. Ask your WRCLA distributor for details. Grading Rule Paragraph1 NLGA N/A *Manufacturers may market their own proprietary grades. 1NLGA – National Lumber Grades Authority Western Red Cedar Lumber Association |