In southern california climate, I can't evaluate the quality of roofer's proposal regarding layers and materials; he offers a five yeazr warranty; can you advise, please?
"Install a fiber cant strip in all angles (after replacing skylight). Apply 1 layer of 28# fiberglass base sheet, nailed to sheathing w/American made lg. head simplex nails.Install new sheet metal roof pipe flashing. Apply two layers of 11# fiberglass plysheets mopped solid w/hot asphalt between each layer. Apply 80# fiberglass mineral surfaced capsheet over plysheets mopped solid w/hot asphalt."