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TOPIC: Installation

Joining a standing seam roof to asphalt shingle roof at a ridge line

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in order to support a new PV panel installation on an existing roof with an inadequate supporting structure, I'm building a new 0.5:12 sloped roof structure above the existing 3:12 roof on one side of my building and plan to install a standing seam roof on it up to the ridge where it joins the existing 3:12 shingle roof of the other side. Will I be able to adequately make a water tight connection between the existing asphalt shingles and the standing seam metal roof with some kind of a cap flashing? I'm worried about wind blowing the water under the cap.

Tom McMillan

3/10/2022
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Yes, this can be done but please realize that the only type of standing seam roof suitable for that low pitch is a mechanically seamed standing seam.

Todd Miller
Todd Miller
Isaiah Industries, Inc.

3/11/2022
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