Two NFBA overhang styles on top of the standard straight rake: bird's beak (aka widow's peak / turkey tail), where the rake angles out to a peak over the upper slope, and flying gable, where the overhang grows from the eave. Each adds a triangle in each roof plane at each gable end, flush with the skin, plus an edge strip where the rake trim follows the new profile.
Also called: widow's peak · turkey tail · peak extension · decorative gable overhang
- 1overhangPeakProfile() answers where along the slope the extension starts, how far the peak reaches, its edge length and its area — one function the geometry and the takeoff both read.
- 2A bird's beak breaks out over the upper slope only (starting at 55% of the slope length); a flying gable grows all the way from the eave.
- 3The peak reach clamps to a half-foot to four-foot band.
- 4Peak-extension overhangs need a peak, so they are gable-only.
- 5The takeoff emits a BeakEdgeTrim line and an info rule notes that pre-assembled overhang rafters attached to the end truss carry it, because roof steel cannot cantilever on its own.
Overhang style is an upsell a builder can point at, but only if the drawing and the estimate agree on how much of it there is. Boxed, open and closed rake profiles are drawn from the same profile the takeoff measures, so the area on screen and the area on the quote are one number — the customer sees the detail they are paying for and the yard ships enough material to build it.
- A visual upgrade that is drawn but not priced, or priced but not drawn.
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