Full Product Manual

118
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
water-resistive barrier
joint flashing
Pre-built corner using a pair of
nails (one in each face) attach
the corner to the building
1/8 in. caulked gap is
left between siding and
the side trim pieces
rigid insulation
TIP: With some types
of foam it is possible to
use the rigid foam as the
water resistive barrier by
taping and sealing all of
the joints. Refer to specific
manufacturers installation
requirements when
considering this type of
application.
Note: When attaching lap
siding products over foam
the length of the chosen
fastener must be extended
by the thickness of the foam
to achieve the same required
holding power.
A.16
Flashings
The Z flashing above all horizontal trim must be incorporated into the WRB regardless of WRB position. If the foam is
being used per manufacturers instructions as the WRB, all flashings must be incorporated into the drainage plane such
that it allows moisture to drain down and out.
Note: It is recommended to
layout the rigid foam insulation
such that vertical joints do not
occur at the corners of window
and door openings or overs if
possible.
• When using a weather resistive barrier (WRB) in conjunction with rigid foam
insulation, the WRB can be installed underneath the foam as shown, or
over the top if more convenient
• Regardless of where the WRB is placed all flashings must be
incorporated into the WRB and drainage plane.
• Some rigid foam insulation products are manufactured with tongue &
groove or shiplap joints and can be used as the WRB when properly
installed and sealed. When using rigid foam insulation as the WRB refer
to manufacturers installation instructions.
Trim
Depending upon the reveal around windows, doors, & penetrations,
thickness of foam and the type and thickness of trim used there will be
different techniques to install the siding and trim to ensure the foam is
completely concealed.
WEATHER BARRIER & RIGID FOAM
A.17
A.18
Don’t caulk gap
between flashing and
upper panel.
Trim to be added to
keep window proud
of siding when adding
rigid insulation
1/8 in. caulked gap is
left between siding and
the side trim pieces
Flashing
Rigid Insulation
Structural
Sheathing
Water-resistive barrier
Starter Strip
1/4 in. Gap
Additional Information (continued)