Technical Specifications

NICHIHA INSTALLATION GUIDE FOR SIX-FOOT HORIZONTAL PANELS
20
WINDOW SILLS
JE310 FINISH CLIP
For recessed windows, add a flashing where
the panels will terminate so the top edges are
covered or capped at the sill.
Remove the top ship-lapped edge of the
panel at the window sill, cutting the panel to
the required height, and route grooves into
panel top at appropriate width to coincide with
framing members. (Refer to Finish Clip Usage
for biscuit joiner info.) Clean any dust off the
panel. For windows narrower than a panel,
only remove the portion of the panel edge
directly under the window but accounting for a
minimum ¼” gap at both jambs.
Cut, routed panel edges must be sealed with
100% acrylic latex primer or paint, such as
Kilz Premium or Kilz Max. Panel edge should
be spaced a minimum 3/8” below a flush or
overhanging window sill to accommodate the
Finish Clip.
Fasten FS1005 Corrugated Spacer (5mm) at
stud locations before setting panel into place.
Seat Finish Clips into grooves and fasten at
each stud location, through Spacer, to secure
panel into place.
If the top edge of the panel is fully sheltered
under the sill, it is not necessary to seal the
3/8” gap. For better system performance,
Nichiha recommends the vented approach.
(Figure 41)
FACE FASTENING (J-MOLD OPTIONAL)
For recessed windows, add a flashing where
the panels will terminate so that the top
edges are covered or capped at the sill. As
needed to match the window width, remove
panel top ship-lapped edge, cutting the panel
to the required height to fit below the window
sill, leaving a ¼” gap between the top of the
cut panel edge and the window sill or trim
board.
Cut, routed panel edges must be sealed with
100% acrylic latex primer or paint, such as Kilz
Premium or Kilz Max. Clean any dust off the
panel with a clean, doft, dry cloth.
Add FS1010 Corrugated Spacer (10mm) at
stud locations, set the panel on the clips of
the panel(s) below, and then face fasten top,
cut edge of panel at the sill. Keep screws 1”
below panel edge. This will avoid cracking or
breaking the panel. Best practice is to pre-
drill the panel before fastening.
If the top edge of the panel is fully sheltered
under the sill, it is not necessary to seal the
1/4” gap. For better system performance,
Nichiha recommends the vented approach.
(Figure 42)
J-Mold or other trim channels can be included
at a sill but must be placed on the panel edge
prior to face fastening panel so that the trim
is fastened simultaneously.
NICHIHA 10MM SPACER
FACE FASTENER
OPTIONAL SEALANT - NICHIHA
PREFERS NO SEALANT FOR VENTING
PURPOSES (SEE INSTALLATION GUIDE)
FINISH CLIP
OVER 5MM SPACER
Fig. 41 Fig. 42