Full Product Manual

114
General
Product
Information
Working
Safely
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
ATTACHING JAMES HARDIE PRODUCTS TO INSULATED CONCRETE FORMS (ICF)
Considering the proprietary nature of Insulated Concrete Forms (ICF) and the number of ICF manufacturers currently
selling product in the US and Canada, James Hardie Building Products cannot calculate or determine the proper
fastener for each type of plastic or metal cross-tie flange being used in the field. James Hardie offers the following as
a guide to determine the correct siding fastening to be used with the respective ICF system chosen for the project in
question.
1. Determine the projects basic wind design, including basic wind speed, wind exposure category, and mean roof height.
Find the fastener and frame type within James Hardie’s ICC-ES Product Evaluation Report (e.g. ESR 1844 & 2290)
that will meet the project’s basic wind design.
Take note of the head diameter, shank diameter, and fastener length for the fastener.
Take note of the frame type and frame spacing.
Head
diameter
Shank
diameter
Length
Note: Fastener bearing area is equal to
the head area less the shank area.
Go to the ICF system manufacturer and find a fastener that is similar in dimension to the fastener from step 2.1 above.
Basically, the bearing area under the ICF fastener head shall be the same as or greater than the bearing area
under the James Hardie fastener head from step 2.
Since the James Hardie siding product has to be attached to a structural member, in this case the ICF cross-tie
flange, the steps below shall be followed.
The onus is on the ICF system manufacturer to demonstrate that their ICF cross-tie flange holds fasteners,
screws or nails, the same as wood or steel framing hold screws or nails.
ICF fastener allowable withdrawal load capacity (applicable factor of safety applied) may be found in an ICC-ES
Product Evaluation for the given ICF manufacturer’s products, OR
The ICF manufacturer may have testing that shows their fastener’s allowable withdrawal load capacity
(applicable factor of safety applied) from their cross-tie flange.
For the fastener from step 2, a registered design professional shall calculate the allowable withdrawal load (factor of
safety applied) from the frame type noted in step 2.2.
A registered design professional shall then make an equivalency statement comparing the ICF fastener withdrawal
(step 4.1.1 or step 4.1.2) versus the fastener withdrawal from step 5.
When the ICF cross-tie flange spacing differs from the James Hardie frame spacing in step 2.2, a registered design
professional shall calculate the maximum siding fastener spacing into the cross-tie flange needed to resist the
applicable basic wind speeds published in
James Hardie’s ESR 1844 & 2290 for the
fastener and design from step 2.
When required by the code official and once
in possession of the information gathered in
the steps above it is the responsibility of the
property owner, design professional,
contractor, or installer to make his or her
case to the Building Official¹.
¹ The Building Official reserves the right to approve alternate materials, design
and methods of construction, 2006 International Building Code® Section 104.11,
2006 International Residential Code® Section R104.11, and 1997 Uniform Building
Code™ Section 104.2.8.
Concrete
Reinforcement
Insulating
Foam
Starter strip builds
out siding to the
proper angle
Nailing Flange
Joint
flashing
Install factory
ends of planks
at butt joints
Refer to ICF Manufacturer for compliant fastening
A.9
Additional Information (continued)