17
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
Minimum
22.5º
weather
cut
Cut trim block into
two pieces to retro-fit
around existing vent.
Do not
caulk
1/4” gap
HardiePlank
®
Lap Siding
Sheathing Starter
Strip
HardieWrap™
Weather
Resistive
Barrier
Z Flashing
Flashing
should be
tucked under
HardieWrap
see details on
page 19 for
reference.
Do not
caulk
1/4” gap
HardiePlank
®
Lap Siding
Sheathing
Starter
Strip
Z Flashing
Minimum
22.5º
weather
cut
HardieWrap
™
Weather
Resistive
Barrier
HOSE BIBS
Hose bibs are a source of water which increases the likelihood of
moisture related problems. The goal is to keep the water outside of the
building and the best way to do this is keep the water off the walls. A
good preventative measure is to extend the hose bib further from the
wall. A downward slope on the water pipe as it leaves the building will
also encourage any slow leaks to fall away from the home.
Large piping over 1 ½ in. diameter is required to have blocking and
flashing at the penetration. A block of HardieTrim
®
5/4, 4/4 boards
should be installed around the point of penetration. To install a block
around an existing pipe, it may be necessary to cut the block into two
pieces. In this case, weather-cut the trim to fit it into place. Install
flashing over the top of the trim block.
PENETRATIONS
For penetrations in the building envelope such as hose bibs
and holes 1-1/2 in. diameter or larger, such as dryer vents, a
block of HardieTrim
®
5/4, 4/4 boards shall be installed around
the point of penetration. Blocking should be a minimum 3 in.
radius greater than the radius of the penetration. To install a
block around an existing vent pipe, it may be necessary to cut
the block into two pieces. In this case, weather-cut the trim to
fit it into place. Install flashing over the top of the trim block.
Penetrations through a building envelope are made to
accommodate needs such as hose bibs, dryer and furnace
vents, electrical conduit, etc. It is important to restore the weather-
resistant barrier of the home after cutting a hole for the penetration.
There are several pre-made blocking and flashing products
available that can simplify the installation of a penetration. One
such example is Sturdimount
®
.
Be sure to follow all manufactures
installation instructions.
TIP: As most penetrations will require blocking and flashing, some planning is required. As the trim is ordered for the home, don’t
forget to order some extra to serve as blocking.
4.20
4.21
