Technical Specifications

CERTI-LABEL WESTERN CEDAR PRODUCTS
CERTI-GUARD
PRESSURE-TREATED FIRE-RETARDANT SHAKES & SHINGLES
CEDAR SHAKE & SHINGLE BUREAU
R
CERTI-GUARD
PRESSURE-TREATED FIRE-RETARDANT SHAKES & SHINGLES
CEDAR SHAKE & SHINGLE BUREAU
R
CERTI-LAST
PRESERVATIVE TREATED CEDAR SHAKES & SHINGLES
CEDAR SHAKE & SHINGLE BUREAU
R
Architect: Shope Reno Wharton, Photo: Robert Benson
3
Certi-label Western Cedar
shingle and shake size, exposure,
width of joints, width of product,
kiln versus air-drying process,
moisture content and the local
environment will all affect the
expansion/contraction of Certi-
label Western Cedar sidewall
products. These factors should
always be taken into
consideration when determining
the installation details and
adequate spacing needed for
your specific project. Consult
with your Approved Installer and
refer to page 4 of this manual for
more lateral spacing details.
Certi-label Sidewall Application Tips
Certi-label Sidewall Application Tips
Pressure-Impregnated Treated Products
®
Certi-Guard Fire-Retardant Treated Western Cedar Shingles
and Shakes
®
Certi-Last .40 CCA Preservative-Treated Western Cedar Shingles
and Shakes
Certi-label products can also be treated. Products are available either
fire-retardant-treated OR preservative-treated. Special care must be taken to
follow the treatment company’s recommended installation instructions.
Number 1 Grades of Certigrade shingles, and Premium and Number 1
Grades of Certi-Split shakes and Certi-Sawn shakes are available pressure-
impregnated with fire retardants. Contact the treatment company for
treatment warranty information, accessory product requirements (including
recommended fastener types) and application details for treated Western
Cedar material. Local code jurisdictions may have additional information
regarding applications in specific areas.
Number 1 Grades of Certigrade shingles, and Premium and Number 1
Grades of Certi-Split shakes and Certi-Sawn shakes are available
preservative-treated by pressure processes. This product is ideal in areas of
high humidity. Specify the Certi-Last treating label for this extra protection.
Contact the treatment company for treatment warranty information,
accessory product requirements (including recommended fastener types)
and application details for treated Western Cedar material.
Note: Once Western Cedar shingles and shakes are pressure-impregnated
treated you must contact the treatment company to determine if a finish,
such as paint or stain, is allowable.