Asphalt Shingle to Metal Roof Transition

Sean Jarboe
8/2/2006
A customer of mine would like details or advice concerning a shinglke roof terminating 4 feet from eave and becoming a standing seam or low profile metal roof. What special flashings might be involved, what concerns might he address during the application etc. Any help would be greatly appreciated.
Todd Miller
Classic Products, Inc.
8/2/2006
You need to have a suitable underlayment applied initially. With additional underlayment (inserted into uphill underlayment) but coming out on top of the shingles, the metal roof should overlap the shingles by a foot or so. Additionally, a transition flashing should exist between the two. Not sure why you'd want to do this though. The problem will come when the asphalt shingles need to be replaced yet the metal is still good.
Sean Jarboe
8/3/2006
Todd, is there a NERCA Roofing Detail you could recommend for that or something I could present as an example from online? I found the application a little odd as well and have only seen one instance of its application. The home was 3 stories, with 3 eyebrow dormers about 4 feet wide. As the shingles passed the dormer the shingle stopped and 3-4 feet of copper pan was utilized in its place. Sort of like an a huge ice belt/ice panel system. I believe that is what the contractor is hoping to accomplish. Thanks for replying so quickly.
Todd Miller
Classic Products, Inc.
8/4/2006
If you email to me with your email address, I can try to sketch something out and send it to you. I do not think anyone has this as a standard detail in an existing document. My email is [email protected]
Guest User
11/13/2010
I have a 1 in 12 covered porch slope that I want to cover with raised seam metal. The problem is I have a sloped shingle roof that intersects this flatter area. Is there some sort of transition piece that will slide under the upper shingles and then overlap on top of the raised metal roof below it..to form a watertight connection. Is there such a transition piece that flat on one side and raised seam on the other half that would enable what I'm after?
Nate Libbey
11/15/2010
See the attached drawing. Generally you will use a regular metal "L" transition flashing, then use rubber closures to seal the gaps between the ribs.
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