Installation Guide

ROOF FASTENER GUIDELINES
YES
Correct - flush with surface
NO
Underdriven
NO
Overdriven
Type of Certi-label Nail Type and
Shake or Shingle Minimum Length
Certi-Split & Certi-Sawn Shakes Type (in)
18" Straight-Split 5d Box 1 3/4
18" and 24" Handsplit and Resawn 6d Box 2
24" Tapersplit 5d Box 1 3/4
18" and 24" Tapersawn 6d Box 2
Certigrade Shingles Type (in)
16" and 18" Shingles 3d Box 1 1/4
24" Shingles 4d Box 1 1/2
Fasteners
12
Note: Longer fasteners of the same quality may be
required for nailing ridge product
Nails
Staples
Each Certi-label shake or shingle shall be
applied with two fasteners. Nails must be
stainless steel Type 316 in locations within
fifteen (15) miles of salt water. For locations
outside the salt water zone - nails must be
stainless steel, Type 304, Type 316, or hot-
dipped galvanized with a coating weight of
2
ASTM A 153 Class D (1.0 oz/ft ). Stainless steel
nails offer the highest degree of corrosion
resistance. Some nail manufacturers offer
nails specifically for wood shake or shingle
roof application. Contact the nail
manufacturer for further information to
ensure the fasteners used comply with listed
requirements and are correct for your
application.
The Cedar Shake & Shingle Bureau prefers
the use of nails, however if you choose to use
staples they must be stainless steel Type 316
in locations within fifteen (15) miles of salt
water. For locations outside of the salt water
zone stainless steel Type 304 or Type 316
must be used. Each Certi-label shake or
shingle shall be applied with two (2) staples.
Staples must be 16 gauge with crowns 7/16"
minimum horizontal, maximum 3/4"
horizontal to the Certi-label shake or shingle
butt.
Location/Penetration
Fasteners, two (2) per shake or shingle, shall
be applied approximately 3/4" from the edge
and approximately 1 1/2" above the exposure
line. Fasteners shall be long enough to
penetrate into the sheathing at least 3/4" or
all the way through. Minimum nail lengths
are shown in the fastener chart. Nails and
staples must be driven flush with the surface
of the Certi-label shake or shingle.
Overdriving the fastener can split and/or
distort the Certi-label shake or shingle.
Do not use electro galvanized (EG) fasteners.
Important Notes:
Pressure Impregnated Treated Shakes
and Shingles
Underdriving or overdriving any fastener
will affect the integrity of the roofing
system. Fasteners utilized must be specific
for use with wood shakes and shingles to
prevent splitting and other weakening
factors. Do not use electro-galvanized
fasteners. Ensure the fasteners used
comply with listed requirements.
Fasteners used with fire-retardant-treated
(Certi-Guard®) and preservative-treated
(Certi-Last® ) shakes or shingles must be
stainless steel Type 316. For specifics on
installation, accessory building materials
(flashing, etc), finishes and maintenance
please contact the treatment company
directly.
www.cedarbureau.org/purchasing/treaters.asp
The information above is not intended to
supersede local building codes.
(EG)