Metal Roof Panels, Linear Feet, and Fasteners
Panels, linear feet, and through-fasteners (or clips) for one metal roof plane: the panel count from the product's net coverage width (not the sheet width), the total linear feet, the slope-area squares, and the fasteners from the wind-zone pattern. A 36 in exposed-fastener panel and a 16 in standing-seam panel covering the same plane differ by nearly a factor of two in panel count - which is why net coverage width, not square footage, sets a metal order. Per roof plane (double for a symmetric gable). A material takeoff, not a wind-uplift design.
Formula and source
panels = ceil(eave_width_ft x 12 / panel_net_in); total_panel_lf = panels x panel_length_ft; plane_area_ft2 = eave_width_ft x panel_length_ft; squares = plane_area_ft2 / 100; fasteners = ceil(squares x fasteners_per_sq).
Metal Construction Association (MCA) and Metal Roofing Alliance (MRA) installation references and the manufacturer panel-coverage and fastening charts, by name; the panel-count and fastener relations are first-principles arithmetic.
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