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Specialty Certi-label™ Western Cedar Sidewall Products
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Pressure-Impregnated Treated Products 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.
Certi-Guard® Fire-Retardant Treated Western Cedar Shingles and Shakes Number 1 Grades of Certigrade shingles, and Premium and Number 1 Grades of Certi-Split® shakes and Certi-Sawn® shakes are available pressureimpregnated 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.
Certi-Last® .40 CCA Preservative-
Treated Western Cedar Shingles and Shakes
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.
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Certi-label™ Sidewall Application Tips
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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 Certilabel 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.
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Architect: Shope Reno Wharton
Photo: Robert Benson
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