The local codes typically say a roof is repairable and can not have MORE than 2 layers but none of them state, SPECIFICALLY, if a roof can have a repair on a 2-layer roof.
I have found:
International Code Council - International Residential Code R907.3 Recovery versus replacement.
New roof coverings shall not be installed without first removing all existing layers of roof coverings where any of the following conditions exist:
1. Where the existing roof or roof-covering is water soaked or has deteriorated to the point that the existing roof or roof-covering is not adequate as a base for additional roofing.
2. Where the existing roof covering is wood shake, slate, clay, cement or asbestos-cement tile.
3. Where the existing roof has two of more of any type of roof covering.
However, the insurance company sited: the section that said roof “repair” was acceptable. It does NOT however say a 2-layer roof was repairable.
Please allow me your thoughts