20
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
Ground
Minimum 6-in.
clearance
Siding and trim
James Hardie products must be installed with a minimum of 6-in.
clearance to the ground on the exterior of the building. Clearances
greater than 6-in. may be required in accordance with local
building codes. Foundations are typically required to extend above
the adjacent finished grade a minimum of 6-in. or as required by
local building codes.
SIDING TO GROUND CLEARANCE
IBC Code Reference: “1803.3 Site grading. The ground immediately adjacent to the foundation shall be sloped
away from the building at a slope of not less than one unit vertical in 20 units horizontal (5-percent slope) for a
minimum distance of 10 feet (3048 mm) measured perpendicular to the face of the wall…”
A
1
/4-in. clearance must be maintained between James Hardie
®
siding and trim products and any horizontal flashing.
All horizontal flashing should be installed with a positive slope
in such a way that it promotes proper drainage and does not
allow moisture to pool on top of the flashing.
Do not
caulk
between
ashing
and siding
Trim
Water-resistive
barrier
Flashing
1
/4-in. gap
SIDING TO FLASHING CLEARANCE
General Installation Requirements (continued)
¼ in. gap
Water-resistive
barrier
1/8-in.caulked
gap is left
between
siding and
the side trim
pieces.
Starter strip
Do not caulk between the
siding and the ashing.
Flashing
4.27
4.28
4.29
