Technical Specifications

NICHIHA INSTALLATION GUIDE FOR SIX-FOOT HORIZONTAL PANELS
24
FIBER CEMENT
& PVC TRIM BOARDS
Nichiha manufactures a full line of fiber
cement trim boards - NichiTrim™, which
are available in the Southeast U.S. Refer to
Nichiha.com for more information.
When panels are to be butted to fiber
cement, wood or other trim pieces, a gap of
1/4” width is required.
Use Nichiha Single Flange Sealant Backer or
commercially-available backer rod.
Apply sealant compliant with ASTM C-920.
METAL & VINYL TRIM
Install trim channel, such as Nichiha Corner
Key or Open Outside Corner, in accordance
with manufacturer’s installation instructions.
Install prior to panels and fasten with corrosion
resistant fasteners through trim anges every
12-16” into studs or corner blocking. Stagger
fasteners on alternating sides.
Cut off terminal panel ship-lapped edge to fit
panel into channel trim so that panel edges
are not exposed.
Nichiha metal trim pieces are each 10 feet in
length. To cut metal trim, a non-ferrous carbide
miter saw blade is appropriate. When butting/
stacking metal trim pieces, add a bead of
polyurethane sealant at the seam/joint.
Prior to installation of panels into the trim
channels, add a foam backer rod into the trim
channel to aid in spacing panel edges 1/8” off
center flange of trim.
Metal trim can be pre-finished when
purchased to match Illumination Series
color(s). Otherwise, for field painting metal
trim, use Direct to Metal (DTM) paint. See
Tamlyn’s XtremeTrim Painting Guide.
(Figure 50)
Fig. 50
Corner Key Trim