Trim lines derived from the drawn trim panels, mirroring SmartBuild's first-class Trim usages (Corner, EaveEdge, GableEdge, RidgeCap) and extending them to the shapes we model: hip caps, mansard curb, gambrel break cap, monitor headwall flashing, high-eave trim on a monoslope, and bird's-beak edge trim.
Also called: ridge cap · rake trim · corner trim · eave trim · closure strip · flashing
- 1A rake board follows two or more slopes, so its billed run is the profile centreline — roughly half the outline perimeter — not the longest single edge.
- 2Corner trim accumulates the tallest leg per corner so a two-leg L is not billed twice.
- 3Opening trim is the perimeter of every opening.
- 4Exposed-fastener steel adds an inside/outside closure strip matched to every eave run; standing seam and shingle do not.
- 5Headwall flashing carries the IRC R903.2 note: minimum 0.019in metal, 4in up the wall and 4in onto the roof, kickouts at both ends of each run.
Trim is the category most often under-ordered, because it gets guessed off a drawing by eye instead of counted. Every piece is measured off what is actually drawn — rake, corner, eave, base, and the transition flashing where a monitor's raised section meets the lower roof. Adding trim to the building adds it to the order in the same change, so the run a crew is short of on site is a run that was never drawn.
- Trim quantities estimated off perimeters rather than the real runs.
- Two-leg corner trim double-billed.
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