21
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
SIDING AND TRIM TO SOLID SURFACES
A clearance of 1 in. to 2 in. must be
maintained between James Hardie
siding and trim products where they
meet roofs, decks, paths, steps,
driveways or any other solid surfaces.
Steps
Roong
Trim
Flashing
Siding
Minimum 1-2in. clearance
Seal cut
edges
(of siding)
Seal cut
edges
(of siding)
Minimum 1-2in. clearance
Code Reference: “1503.2.1 Locations. Flashing shall be installed at wall and roof intersections, at gutters,
wherever there is a change in roof slope or direction and around roof openings…”
IRC Code Reference: “905.2.8.3 Sidewall flashing. Base flashing shall be continuous or step flashing shall be a
minimum of 4 in. in height and 4 in. in width”
4.30 4.31
Porches or other structures that
maintain a minimum 1:1 ratio of
the wall height to the overhang
length provide extra protection,
which keeps rain and other weather
elements away from the siding.
These areas may be designated
as Sheltered Areas. In these areas,
a minimum
1
/2-in. clearance is
required with appropriate flashing
between the bottom of James
Hardie trim or siding and solid
horizontal surfaces.
Porch roof overhang
must equal porch wall height
Flashing
below
trim rests
on solid
surface.
Flashing over
trim with
1
/4-in. gap
Siding
Detail
area
Trim
Minimum,
1
/2-in. clearance
between the trim and
horizontal surface.
1
1
CLEARANCES FOR SHELTERED AREAS
4.32
WARNING
James Hardie siding and trim products must not be installed
such that they remain in contact with standing water.
!
