Installation Guide

installing around openings
insulated siding installation
The preferred J-Channels are 1-1/4"
or 2-1/2". They should be installed
as described in Basic Accessory
Installation, “J-Channel, Flex-J, and
Flashing.”
Utilize a flexible water diverter
at the bottom of all openings (see
General Siding Installation). A
flexible water diverter should be
housewrap, plastic, or roofing felt.
(Fig. 2)
To measure for a window or other
opening:
1. Set the panel below the opening.
2. Mark the J-Channel location,
allowing for a 1/4" gap on
all sides of the opening for
expansion and contraction.
(Fig. 3)
Cut the panel as marked using either
a utility knife or tin snips. Cut back
foam 2" for 1-1/4" or 3-1/2" for
2-1/2". (Fig. 4)
continued
6"
Minimum
2"
Minimum
Remove foam to
depth of channel
Fig. 1
Fig. 2
Fig. 3
Fig. 4
54
Installing Around Openings