Installing over old roof and hail: "I've heard metal roofing is more susceptible to hail damage ..." - Guest User (7/27/2004) | Roofing over existing roof | Archive | Ask The Experts Forum

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I've heard metal roofing is more susceptible to hail damage if installed over the old asphalt shingle roof. But I've also heard that helps insulate better. Should it or should it not be installed over old roofing? Thanks, and God Bless.		Guest User 7/27/2004	Share Or copy this URL: https://www.metalroofing.com/spirit/comment/3546/find/
I have been involved in countless installations over old shingles and, hail or not, I have never encountered a job where anything down the road indicated to me that maybe it would have been better to remove the old shingles. Still, though, there are various factors including the profile and design of the new roof. When in question, always contact the roofing manufacturer for their opinion.		Guest User 7/27/2004	Share Or copy this URL: https://www.metalroofing.com/spirit/comment/3547/find/