Installation over existing shingles | Installation Process | Archive | Ask The Experts Forum

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I was wondering, can you install a metal roof over exising shingles? If so, this would make my like a lot easier.	Guest User 5/21/2005	Share Or copy this URL: https://www.metalroofing.com/spirit/comment/5917/find/
Metal roofing weighs much less than standard shingles. Most residential metal roof systems are designed to be installed over existing shingles, saving the cost and mess of old roof removal and disposal. I always suggest a new underlayment between the two layers of roofing though.	Todd Miller Isaiah Industries, Inc. 5/21/2005	Share Or copy this URL: https://www.metalroofing.com/spirit/comment/5918/find/
What if the metal is 24 guage and the old composite is in 2 layers? I have been advised that the composite should be removed due to its weight, but a respected roofer says the composite will not have to be removed. The home is a sturdy, brick structure over 30 years old.	Guest User 5/31/2005	Share Or copy this URL: https://www.metalroofing.com/spirit/comment/5919/find/
In most areas, building codes prohibit more than two layers. From a practical standpoint, though, there are always possible conditions which could prevent this but, generally, your installation as described is probably feasible. Check with the manufacturer of the new roofing and see what they say since they will know their product better than I do.	Todd Miller Isaiah Industries, Inc. 5/31/2005	Share Or copy this URL: https://www.metalroofing.com/spirit/comment/5920/find/
Can you apply metal roofing over existing metal roofing? Existing sheathing is skipped 1 X 6.	Guest User 7/6/2005	Share Or copy this URL: https://www.metalroofing.com/spirit/comment/5921/find/
Hi Nancy. I replied to your other post about this.	Todd Miller Isaiah Industries, Inc. 7/6/2005	Share Or copy this URL: https://www.metalroofing.com/spirit/comment/5922/find/