25
General
Product
Information
Tools for
Cutting and
Fastening
General
Installation
Requirements
General
Fastener
Requirements
Finishing and
Maintenance
HardieTrim
®
Boards/Battens
HardieWrap
®
Weather Barrier
HardieSoffit
®
Panels
HardiePlank
®
Lap Siding
HardieShingle
®
Siding
HardiePanel
®
Vertical Siding
ESR-1844 &
2290 Report
Appendix/
Glossary
Working
Safely
Water-resistive
barrier
1 ¼ in. nail length 1 ¼ in. nail length 1 ¾ in. nail length
Fastener length
is 1
3
/4 in. (for this
example)
Fastener length
increase must
match the
thickness of
the foam
Foam sheathing
up to 1-in. thick
(
1
/2-in. thick for
this example)
Braced stud wall
APA rated wood
sheathing
Siding (typical)
Fastener length 1
1
/4 in.
(for this example)
Fastener length same as
for wall without sheathing
Water-resistive
barrier
Stud wallBraced stud wall
Water-resistive
barrier
Stud wall with foam sheathingStud wall with APA rated wood sheathingStud wall without sheathing
Siding (typical)
Fastener length
1
1
/4 in.
(for this example)
Each product section of the James Hardie Installation Guide contains fastener requirements for that specific
product. In general if siding is to be installed over a non-structural sheathing such as foam, gypsum, or builder
board, increase the length of the fastener by the thickness of the non-structural sheathing. For example, if a
1
1
/4-in. fastener would normally be required for an application, but the siding is being installed over
1
/2-in. foam
sheathing, increase the fastener length by
1
/2-in. to a 1¾ fastener length. For siding installation over a framed
wall with structural sheathing such as plywood or OSB, the fastener length does not need to be increased.
Fastener driven snug
Fastener driven ush
Overdriven fastener
is countersunk and
ll.
Fastener driven
properly close by.
James Hardie
®
siding and trim products can be hand-nailed or
fastened pneumatically. However, fastening with a pneumatic nailer is
recommended for speed and consistency. Nails should be driven snug
or flush with the surface of the siding.
For pneumatic nailing, set the air pressure so that the nails are
driven to the proper depth. A flush mount attachment on the head of
the nailer is recommended. If setting the nail depth proves difficult,
choose a setting that slightly under-drives the nails. Then drive any
under-driven nails snug to the surface with a smooth-faced hammer.
If nails are driven too deep, countersink them with a nail set, and fill,
then drive another nail near by to the proper depth. Never use staples
to attach James Hardie products.
PNEUMATIC FASTENING
TIP: Stainless steel fasteners are recommended when installing
James Hardie products.
General Fastener Requirements
5.1 5.2 5.3
5.4
WARNING
When installing siding over foam sheathing, care must be taken not to overdrive
the nails and compress the foam. The resulting unevenness in the wall could
distort the siding and give the wall an unsightly wavy appearance.
!
