Installing over existing fiberglass shingles

Guest User
Can metal roofing be installed over existing fiberglass shingles? Will this present any problems?
Allan Reid
Dura-Loc Roofing Systems, Inc.
Most metal roofing products are but the building code does have certain restrictions as to layers and type of overlay and now with hail zones. Also ask to see the product approval which will indicate that it has been tested and approved for this application as there are wind, fire and rain issues as well to consider.
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