The detail illustrates both a section view and an isometric view of a wood roof assembly over structural I sheathing. The multilayer roofing system consists of a fiberglass base sheet mechanically fastened to the deck per Factory Mutual (FM 90) standards, followed by two plies of fiberglass ply sheets, continuous asphalt moppings, and a mineral-surfaced fiberglass cap sheet. Detailed notes provide specific fastener spacing requirements for the field, perimeter, and corners using a staple and tape attachment system.
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