Q: Is it OK for metal roofing to be screwed down directly on top of asphalt shingles, without any wood or other material between the metal and shingle?
A. You may wish to take a look at the videos in our Metal Roofing 101 video series … there may be some topics of interest to you. I am also attaching a copy of my ebook on How To Buy A Metal Roof.
Very few metal roofs must be installed with battens. However, I always suggest a layer of underlayment over existing shingles. It is an extra safeguard against water and it also protects the back side of the metal from abrasions against the shingle granules. Additionally, I interpret the International Building Code as requiring this underlayment. Not all people interpret the code that way though.
Todd's expertise comes from his years of experience in metal roofing manufacturing. As president of Isaiah Industries, based in Piqua Ohio, Todd runs a several of the world’s leading manufacturers of residential metal roofing; Classic Metal Roofing Systems, Kassel & Irons, and Green American Home. His personal goal is to educate homeowners of the long-life benefits of metal roofing.
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