Tapersawn Shakes


Tapersawn ShakeThese shakes are sawn both sides. Premium and Number 1 Grades are the most common. Premium Grade is 100% edge grain, 100% clear and 100% heartwood. Number 1 Grade allows up to 20% flat grain in each bundle. Number 2 and 3 Grades are also available.


Number 1 Grade


Description
Nominal lengths 18" and 24" shakes shall be of random widths, minimum width shall be 3 ½". Tapersawn shakes less than 4" in width shall not constitute more than 5% of each bundle. Thickness shall be nominal 5/8" or ¾" with a minus tolerance of 1/16" in 10% of the bundle. Face 100% clear. Flat grain 205 maximum per bundle. 1/8" sapwood allowed to exposure line. Additional sapwood permitted above that point.

Roof Exposure
10" for 24-inch shake; 7½" for 18-inch shake. Interlaid felt is required.

Wall Exposure
Single course: 11½" for 24-inch shake; 8 ½" for 18-inch shake

Double course
18" for 24-inch shake; 14" for 18-inch shake.

Recommended Use
For walls or roofs on 4:12 slope and steeper where a high quality, durable and uniform appearance is desired.

Starter-finish Course
Length 15'. For use on the underlying starter course at eave lines and for the final course at ridges where trimming would otherwise be necessary and full-length shakes are not needed.

Premium Grade


Description
Same as Number 1 Grade, except that all product shall be 100% edge grain. All other descriptions from Number 1 Grade apply.

Number 2 Grade


Description
Nominal lengths 18" and 24", minimum width shall be 3", shakes less than 4" width shall not constitute more than 10% of the running inches of each bundle. Thickness shall be nominal 5/8" or ¾": with a minus tolerance of 1/16" in 10% of the bundle. Limited defects are allowed 9" above the butt in 18" shakes and 12" above the butt in 24" shakes. Unlimited flat grain is allowed. Sapwood is restricted it 1" in width for the first 10 inches.

Roof exposure
7½" for 24-inch shake; 5½" for 18-inch shake.

Wall exposure
Single course: 10" for 24-inch shake; 7½" for 18-inch shake.

Double course
11½" for 24-inch shake; 8½" for 18-inch shake.