Full Product Manual

120
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
The reasons for this are:
1. The use of joint flashing behind field butt joints is an approved joint treatment
method as described in the 2006 International Building Code and is recognized by
James Hardie and experts across the building industry to be a superior method.
“1405.17.2 Horizontal lap siding. Lap siding shall be lapped a minimum of 1
1/4 inches (32 mm) and shall have the ends sealed with caulking, covered with
an Hsection joint cover or located over a strip of flashing.”
Experts across the industry recognize flashings as an effective and responsible
method for draining a wall system:
“The fundamental principle of water management is to shed water by layering
materials in such a way that water is directed downwards and outwards out of the
building or away from the building. The key to this fundamental principle is drainage.
The most elegant expression of this concept is a flashing. Flashings are the most
under-rated building enclosure component and arguably the most important.”
EEBA (Energy & Environmental Building Association™) Water Management
Guide By Joseph W. Lstriburek, Ph.D., P.eng. June 2004.
2. Reduced maintenance required by the home owner – It is recognized by James Hardie,
several caulking manufacturers, experts across the industry, and experienced home
owners that when caulking is used at field butt joints, maintenance will be required.
Depending on the specific product and the application, caulked field butt joints will
need to be maintained to guarantee continued performance over the life of the building.
In addition, several sealant/caulking manufacturers recommend against using their
products at butt joints in fiber cement siding for many of the reasons discussed here.
3. Improved appearance – When installed properly, flashing at a field butt joint can create a
better looking joint. James Hardie recommends butting field joints together in moderate
contact which achieves a more continuous looking joint. When utilizing a caulked butt
joint, a gap specified by the caulk manufacturer must be left at the joint. Over time as
the caulk ages, this joint can become pronounced on the wall and stand out.
Joint flashing
Do not use caulk on HardiePlank
®
lap
siding with ColorPlus
®
technology
A.21
A.22
The fastening requirements for each product are stated in one or more of the following technical documents and in
some cases fastener products may be referenced. Below are the steps that can be used to demonstrate an alternate
fastener’s equivalency to the James Hardie published fastening requirements.
1. It is the responsibility of either the property owner, design professional, contractor, or installer to consult:
a. The fastener Manufacturer for a Product Listing Specification or Code Compliance report that covers the
installation method in question, or;
b. A licensed Architect or Professional Engineer to make an equivalency statement linking the alternate
fastener (or fastening method) to the fastening requirements published within the relevant James Hardie
technical document;
2. Once in possession of the information gathered in step one 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.
All national, state, and local building code requirements must be followed and where they are more stringent than the James Hardie installation
requirements, state and local requirements will take precedence.
JAMES HARDIE REQUIREMENTS FOR ALTERNATE FASTENERS AND METHODS OF FASTENING
Additional Information (continued)