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CertainTeed Vinyl Siding Installation Guide
106
Cornice Cap with Cedar Impressions
Mitered Cornerpost
General
Before applying siding and accessories, make certain the substrate
is watertight. In order to be properly protected from precipitation,
the substrate may need to be flashed to shed water to the
exterior. The siding and accessories alone are not meant to
be a watertight barrier.
Cedar Impressions panels are installed from the right to the left.
You can install Cedar Impressions Mitered Corners at three
different times:
1. As you install courses up one side of the wall—CertainTeed’s
recommended method
2. As you install both sides of the wall at the same time—allowing
you to make small corrections as you move up the wall
3. As you move up the second, adjacent wall after you have
installed all the panels on one side of the wall—preferred by
some installers
The first method is described below.
Cedar Impressions outside corner installation
Install the first Cedar Impressions panel 3" from the edge of the
outside wall.
Hook the corner piece over the siding, making sure it engages into
the starter strip and nail through the top two holes.
Continue installing corner pieces as you move up the wall.
When you reach the top panel, cut to length and nail with
color-matched finish nails.
If you end on an outside corner that has a cornerpost installed,
you need to measure from the edge of the panel to the edge
of the cornerpost. Add 1-1/2" to this dimension; it will be the
panel length.