Installation Guide

CERTI-LABEL PRODUCTS
CERTI-GUARD
PRESSURE- FIRE-RETARDANT
CEDAR SHAKE & SHINGLE BUREAU
TREATED SHAKES & SHINGLES
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CERTI-GUARD
PRESSURE- FIRE-RETARDANT
CEDAR SHAKE & SHINGLE BUREAU
TREATED SHAKES & SHINGLES
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Pressure-Impregnated Treated Products
Certi-Guard Fire-Retardant Treated Cedar Shakes and Shingles
Certi-Last Preservative-Treated Cedar Shakes and Shingles
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.
Premium and Number 1 Grades of Certi-Split shakes, Certi-Sawn shakes, and
Number 1 Grades of Certigrade shingles are available pressure-impregnated
with fire retardants. Certi-Guard products may be used for Class A, B and C
roof systems. Contact the treatment company for treatment warranty
information, accessory product requirements (including recommended
fastener types) and application details for treated cedar material. Local code
jurisdictions have additional information regarding applications in specific
areas.
Premium and Number 1 Grades of Certi-Split shakes, Certi-Sawn shakes, and
Number 1 Grades of Certigrade shingles 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
cedar material.
Note: Cedar’s natural color varies as shown in these examples, yet without
applying a paint or stain it will all weather to a beautiful gray.
CERTI-LAST
PRESERVATIVE TREATED CEDAR SHAKES & SHINGLES
CEDAR SHAKE & SHINGLE BUREAU
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• Be sure that felt interlay paper on
shakes does not extend below a line
that is twice the exposure above the
butt (i.e. a 24" shake at 10",
exposure would have felt applied 20”
above the butt).
• Never interlay shingles with felt.
• Keyways must not be aligned and
must be a minimum 1 1/2” offset
from the course above.
• DO NOT drive nail heads or staple
crowns below wood surface.
• Overdriving or underdriving the
fasteners can seriously damage the
integrity of your roofing system.
Roof Applicationn Quick
Refereence Guidee
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Photo: Celia Pearson