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I have an asbestos tile roof which has lasted at least 60 years here in coastal Connecticut. Apart from some moss, it is in decent shape, needing only a shingle replaced now and then. Given the probable high expense of disposing of the asbestos tiles if they are removed, I'm wondering whether a metal roof can be put on top of the tiles and, if so, whether such an application would be limited to certain types of metal roofing. Thanks for your help.
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First of all, you need to make sure that you're staying within the requirements of any applicable building codes.
That said, I have seen many successful applications over asbestos. In fact, the EPA in my experience advises encapsulization rather than removal.
I do suggest a layer of underlayment over the asbestos so that, when you fasten into the asbestos, you do not create any airborne fibers.
Next, most of the modular (shingle, shake, tile) style products can be installed over asbestos. Also, heavily corrugated or textured vertical seam products might do well.
Use appropriate self-drilling, self-tapping steel or stainless steel screws for fastening.
Before proceeding, consult directly with the manufacturer of the product you plan to install.
11/4/2003
Or copy this URL: https://www.metalroofing.com/spirit/comment/2377/find/Isaiah Industries, Inc.
11/5/2003
Or copy this URL: https://www.metalroofing.com/spirit/comment/2378/find/11/16/2003
Or copy this URL: https://www.metalroofing.com/spirit/comment/2379/find/