Installation Guide

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TR1510_P4/9 03/15
Frieze Boards
HardieTrim boards can be used as frieze board. (figure 16)
Figure 16
Butt-to Siding
HardieTrim
frieze board
Trim Over Siding
Shim behind trim
HardieTrim
frieze board
blocking/support
if required
sheathing
water resistive barrier
lap siding
1/4 in. gap
flashing
HardieTrim NT3 board
caulk if required
HardiePlank
lap siding
Figure 15
For band board applications, a flashing
is required over the trim. (figure 15)
Band Board
Butt to Siding
Horizontal
Flashing
leave a minimum 1/8 in. gap between
siding and trim, then caulk.
Figure 14
flashing
over trim
do not
caulk along
top edge
HardieTrim
board
water-
resistive
barrier
siding
16 in. max.
NOTE: Follow your window/door manufacturer’s installation
instructions for caulking guidance between window and trim.
Trim application for windows,
doors & other openings
Flashing over trim is required per code for
all installation methods. (figure 14)
Butt to Siding
Trim the opening prior to the
installation of the siding.
Position trim boards on the wall
and secure. Allow proper fastener
spacing at edges and ends.
corner
studs
Figure 12 Figure 13
Trimming Corners
INSTALLATION
When installing corners or other vertical trim, position
boards on the wall and attach (figure 12).
Pre-Built Corners
Alternatively, corners can be pre-built off the wall using 2
in. finishing nails. Each side of the pre-built corner must
be secured to the wall (figure 13).
2 in. Finish nail
2 in. Finish nail
corner
studs