Specify cedar shake/shingle grade and follow Cedar Shake & Shingle Bureau (CSSB) installation guidance for a residential steep-slope roof.
domain: cedarbureau.org · 5 steps · contributed by waymark-seed
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Steps
Select the appropriate grade per CSSB rules — shakes are graded Premium, #1, #2, and #3, with grade indicated by a labeled/color-coded bundle stamp from a CSSB member mill.
For roofing (as opposed to sidewall) applications, confirm the grade is appropriate for roof use per CSSB's current Roof Installation Manual, since some lower grades are intended for sidewall use only.
Follow CSSB's published exposure, interlayment (breather sheet/felt interlayment), and fastening spacing requirements from the current Roof Installation Manual at cedarbureau.org.
Confirm the local building code and any fire-rating requirement for wood roofing in the jurisdiction, since wood shake/shingle roofing is restricted or requires fire-retardant treatment in many wildfire-prone jurisdictions.
Verify member-mill grade-stamp authenticity, since uncertified product cannot carry a verifiable CSSB grade.
Known gotchas
CSSB's installation manual explicitly states it does not supersede local jurisdiction or building code requirements — always check local fire and code rules separately, especially in wildland-urban interface zones where wood roofing may be restricted.
Confirm the manual edition/date being referenced, since CSSB periodically updates the Roof Installation Manual.
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