Cedar Lap Siding Grades

Allow a 1 8 inch expansion gap between pieces if the siding is air or kiln dried.

Cedar lap siding grades.

Lap sidings can come in a variety of different sizes patterns and grades. Cedar is also graded based on appearance which is called appearance grade or select lumber. Near clear has very few very tiny knots and a median price point for the knot so fond. Commonly available sizes are 1 x6 1 x8 and 1 x10.

The face side is saw textured. Clear and knotty or stk. This is an architect grade. 4 3 1 2 2 1 2 4 80 1 60 6 5 1 2 4 1 2 2 67 1 33 8 7 1 2 6 1 2 1 85 1 23 10 9 1 2 8 1 2 1 41 1 18 12 11 1 2 10 1 2 1 14 1 14.

This is the rarest. Western red cedar exterior siding or cladding comes in a spectrum of patterns including the one that is just right for your home s style and your budget. Appearance grades use letters a through d with a being the highest grade. There are also two other terms under appearance grade cedar.

Lap sidings are normally supplied in a variety of patterns either green unseasoned or dry in clear or knotty grades and with a smooth or saw textured face. Larger overlaps can be used on wider bevel sidings such as 10 and 12 in pieces see wrcla publication installing cedar siding for more information. This siding type can also be supplied kilnd dried or green unseasoned. For horizontal applications start with the bottom course and work up with the channels pointing upwards.

Do not nail through overlaps. Appearance grade is primarily for non structural lumber under 2 thick. Cedar lap siding grades clear cedar. Highest grade fewest knots is the top of the line wood.

The two most common patterns for lap siding are going to be shiplap with a center match pattern or channel rustic. Clear grades are manufactured to order. For specific western red cedar siding grades please visit the siding grading page. C and better clear.