This multi-ply roof assembly is constructed over a Structural I wood sheathing deck with a staple-tape fastener system and continuous asphalt moppings. A fiberglass base sheet is mechanically fastened to the deck per FM 90 requirements, topped with two plies of fiberglass ply sheets. The assembly is finished with a mineral-surfaced fiberglass cap sheet, using a CR cap when required. Attachment specifications include staples at nine inches on center, with specific row counts for the field, perimeter, and corner zones.
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