Installation Instructions

19
finishing the top of the wall
Undersill trim is used to finish siding under the eaves. The procedure is the same as
that used under the window. For ease of installation, and to retain proper angle of
inclination, the trim can be shimmed.
finishing a gable end
A J-channel is used as the finishing trim in the gable ends. Cut siding to fit gable angle
as illustrated, leaving space for expansion within the channel. The last piece of siding
may have to be furred out to maintain proper angle of siding panel. This is the only
place where you can insert a small screw or nail in the face to hold it in place.
1. Measure from bottom edge of the lock of preceding course, to the bottom of the
J-channel and undersill above the window. Add 1/4" for clearance within the channel.
2. Hold the panel in place and mark the location of the window, allowing for
1/4" clearance in both J-channels. Transfer the height dimension from step 1,
and trim panel to shape.
3. Punch “tabs” along the cut edge, facing outward.
4. Fit panel into lock of preceding panel on one side, while fitting tabs into
undersill trim. Use zip tool to engage panel at other end.