Installation Guide

• For wood frame construction a minimum 4d common nails
spaced 8" o.c. at panel edges and intermediate framing members
spaced up to 24" on center are suitable in most locations*.
• For conventional 20ga steel frame construction a minimum No.
8-18 x 0.323" HD x 1" long ribbed bugle screws spaced 6" o.c.
at panel edges and intermediate framing members spaced up to
24" on center are suitable in most locations**.
**Minimum Basic Wind Speed differs by locality. Where specified
levels of wind resistance are required, refer to applicable Building
Code Compliance Reports.
FASTENER REQUIREMENTS
Figure 6
Self-adhering
membrane
Step flashing
Housewrap
Drip edge
Kickout
flashing
Self-adhering
eaves membrane
Because of the volume of water that can pour down a sloped roof,
one of the most critical flashing details occurs where a roof
intersects a sidewall. The roof must be flashed with step flashing.
Where the roof terminates, install a kickout to deflect water away
from the siding. It is best to install a self-adhering membrane on the
wall before the subfascia and trim boards are nailed in place, and
then come back to install the kickout.
KICKOUT FLASHING
Figure 6, Kickout Flashing To prevent water from dumping behind
the siding and the end of the roof intersection, install a "kickout" as
required by IRC code R905.2.8.3 : "...flashing shall be a min. of 4"
high and 4" wide." James Hardie recommends the kickout be angled
between 100º - 110º to maximize water deflection
Fasteners must be corrosion resistant, galvanized, or stainless steel.
Electro-galvanized are acceptable but may exhibit premature corrosion.
James Hardie recommends the use of quality, hot-dipped galvanized
nails. James Hardie is not responsible for the corrosion resistance of
fasteners. Stainless steel fasteners are recommended when installing
James Hardie
®
products near the ocean, large bodies of water, or in very
humid climates..
• Consult applicable product evaluation or listing for correct fasteners type and
placement to achieve specified design wind loads.
• NOTE: Published wind loads may not be applicable to all areas where
Local Building Codes have specific jurisdiction. Consult James Hardie
Technical Services if you are unsure of applicable compliance documentation.
• Drive fasteners perpendicular to siding and framing.
• Fastener heads should fit snug against siding (no air space). (fig. A )
• Do not over-drive nail heads or drive nails at an angle.
• If nail is countersunk, fill hole and add a nail. (fig. B)
• For wood framing, under driven nails should be hit flush to the plank with a
hammer (For steel framing, remove and replace nail).
• Do not use aluminum fasteners, staples, or clipped head nails.
PNEUMATIC FASTENING
GENERAL FASTENING REQUIREMENTS
James Hardie products can be hand nailed or fastened with a pneumatic tool.
Pneumatic fastening is highly recommended. Set air pressure so that the
fastener is driven snug with the surface of the siding. A flush mount
attachment on the pneumatic tool is recommended. This will help control the
depth the nail is driven. If setting the nail depth proves difficult, choose a
setting that under drives the nail. (Drive under driven nails snug with a
smooth faced hammer - Does not apply for installation to steel framing).
Figure 5
Maintain a minimum 1" gap between
gutter end caps and siding & trim.
Figure A
Figure B
fascia
siding
1"
gutter and end cap
SF1203-P2/3 6/13
Countersink,
Fill & Add Nail