Technical Specifications

SIDEWALL APPLICATION GUIDELINES
12
Sidewall Guidelines
This information has been designed to aid architects, consultants and
builders in specifying Certi-label Western Cedar shingles and shakes. It
suggests a standardized terminology and style for ordering in the hope of
improving accuracy. It incorporates a general outline of the latest application
information. Please note, however, that this is an application guide only. The
information in this manual is not intended to supercede local codes.
Refer to local building codes for more information.
General Application Notes
Sidewall Application
Fastening Sidewall
Shingles/Shakes
1. The contractor shall cover all wall
surfaces with Certi-label Western Cedar
shingles or shakes bearing the Cedar
Shake & Shingle Bureau's official grade
marked label.
2. Certi-label Western Cedar shingles/
shakes for outer courses shall be (specify
grade and length).
3. Certi-label Western Cedar shingles/
shakes for undercourses shall be (specify
grade and length).
4. Certi-label Western Cedar sidewall
shingles/shakes shall be (doubled or
tripled) at foundation lines.
5. Certi-label Western Cedar sidewall
shingles shall be spaced apart 1/8" to
1/4".
6. Joints of Certi-label Western Cedar
shingles/shakes in any one course shall
be offset not less than 1 1/2" from the
joints in adjacent courses.
7. Certi-label Western Cedar shakes on
sidewalls shall be spaced apart not more
than 3/8" to 1/2".
8. Certi-label Western Cedar sidewall
shingles/shakes shall be applied with a
weather exposure of (specify in inches
from exposure chart).
9. Fasteners should be long enough to
penetrate into the sheathing at least 3/4" or
all the way through and driven flush with the
surface of the Certi-label Western Cedar
shingle or shake. In all applications, staples
shall be concealed by the course above.
Fasteners cannot be electro-galvanized as
they will cause staining. For aesthetic
reasons, nails are preferred for sidewall
applications.
[Note: Due to the diverse range of fastener
requirements, please refer to the charts on
page 5 for fastener specifications].
Maximum Sidewall Exposure Chart
Certi-label Western Cedar Product Grade Single Course Double Course
16" Shingles 1 7" 12"
18" Shingles 1 8" 14"
24" Shingles 1 10 1/2" 16"
16" R&R, sanded, Certigroove Shingles 1 7" 12"
18" R&R, sanded, Certigroove Shingles 1 8" 14"
24" R&R, sanded, Certigroove Shingles 1 10 1/2" 16"
18" Handsplit Shakes 1 8" 14"
24" Handsplit Shakes 1 10 1/2" 18"
18" Straight Split Shakes 1 8" 16"
24" Tapersplit Shakes 1 10 1/2" 18"
18" Tapersawn Shakes 1 8" 14"
24" Tapersawn Shakes 1 10 1/2" 18"
16" Shingles 2 6" 9"
18" Shingles 2 7" 10"
24" Shingles 2 9" 14"
16" R&R, sanded Shingles 2 6" 9"
18" R&R, sanded Shingles 2 7" 10"
24" R&R, sanded Shingles 2 9" 14"
18" Tapersawn Shakes 2 7" 10"
24" Tapersawn Shakes 2 9" 14”
Certigrade
Certi-Split
Certi-Sawn
Certigrade
Certi-Sawn
Number One Grade Products
Number Two Grade Products