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CertainTeed Vinyl Siding Installation Guide
7/8"
Capping an outside cornerpost
One method of capping an outside cornerpost is to cut a piece of
Another alternative is to trim the nail flange, receiving channel, and sides from the bottom 1" of the cornerpost. Notch 1" at the 90° bend, fold the bottom 1" of the cornerpost face, and fasten these “flaps” with a pop rivet.
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| Extra Wide Corner Posts | |
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| method of finishing outside corners. Each cornerpost consists | |
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| of four parts: corner starter, two lineals, and a | |
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| Lineals are available in two board styles: 5" smooth and | |
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| The installation procedure is identical for all lineals and inserts. | |
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| To install this | |
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| Before you begin, make sure the corners are flashed properly. | |
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| Measure the vertical span, and allow 1/4" from the underside of | |
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| the eave if the post is 12' or shorter and 3/8" from the underside | |
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| if the post is longer than 12'. Extend the cornerpost 3/4" below | |
long leg insert | the bottom of the starter strip. Cut all four pieces using a power | |||||
circular saw. | ||||||
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Hang a starter strip. Position the starter strip, leaving 1/4" allowance for expansion at the top and 3/8" at the bottom. Position the first nail at the uppermost edge of top nail slot (shown). Nail loosely. Working from the top down, position the remaining nails every 8" to 10", with the nails centered in the slots.
Attach the side lineals. Lock the first lineal into the starter strip.
Nail it to the sheathing, following the procedure described above.
Repeat the process for the other lineal.
Snap in the
NOTE: For a more secure installation, use a pop rivet to attach the molding insert to a side lineal. The rivet should be positioned at the top of the cornerpost.
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