Certi-Split™ Handsplit and
Resawn Shakes
Number 1 Grade 
Description - Lengths 18 inch,
thickness ½" (medium) and ¾" (heavy)
minimums; length 24 inch, thickness 3/8", ½" (medium) and ¾" (heavy)
minimums. Width 4" minimum and 14" maximum. Clear heartwood; 20%
maximum flat grain.
Roof Exposure - 18 inch shakes
- 7½" maximum;
24" inch medium and heavy shakes - 10" maximum; 24 inch
(3/8") shakes - 7½" maximum (5" per UBC).
Wall Exposure - Single
Course: 8½" for 18 inch
shake; 11½" for 24 inch shake. Double
Course: 14" for 18 inch shake; 18" for 24 inch shake.
Recommended Use - For walls and roofs on 4:12 pitch
and steeper where high quality appearance and performance
are desired.
Premium Grade 
Description -
Lengths 18 inch and 24 inch;
width 4" minimum, 14" maximum; thickness ½" (medium)
and ¾" (heavy). Clear heartwood; 100% edge grain; no defects.
Roof Exposure - 7½" for 18 inch shakes; 10" for
24" shakes.
Wall Exposure - Single
course: 8½" for 18 inch
shake; 11½" for 24 inch shake. Double
course: 14" for 18 inch shake; 18" for 24 inch shake.
Recommended Use - For walls
and roofs 4:12 pitch and steeper and where a premium
quality product is needed or desired. The 100%
edge grain requirement exceeds the national industry
standard.
- Class A, B & C
fire rating may be obtained by specifying
Certi-Guard permanent fire retardant Certi-Split
Handsplit and Resawn Shakes.
- Certi-Last CCA treated shakes are available
for added longevity and come with a 30
year warranty against rot and fungal decay.
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- Products manufactured by members of the Cedar
Shake & Shingle Bureau are graded in accordance
with UBC Standard No.32-8 and/or CSA 0118.1
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E-Mail us
for exact specifications and descriptions.
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