Estimating
Reading the Cut Sheet
The cut list: panel run lengths, stock selection, trim, and the panel width that drives the whole takeoff — what is editable and why it matters to the fabricator.
The Cut List is the fabricator's takeoff. It reads the labeled roof geometry — each plane's area, slope, and edge lengths — and works out how many panels to roll, how long to cut them, and how much trim and hardware the job needs.
Every quantity carries a built-in 10% waste factor for cuts, overlaps, and field conditions, so the numbers you see are order quantities rather than bare minimums.
The panel schedule
- Each row is one roof plane: its azimuth, pitch, area, and computed panel width run.
- Cut Length is the sloped run the panel must cover; Stock is the nearest standard length (8–24 ft) the cut comes from.
- Waste shows the offcut per panel (Stock minus Cut Length) so you can see how efficiently each plane nests.
- The footer totals the raw panel count and the count after the 10% waste factor — order to the waste-adjusted number.
Panel width drives everything
- The Panel Width selector (12"–24") changes how many panels each plane needs — narrower panels mean more runs, wider panels mean fewer.
- Changing width re-derives the entire schedule, the trim closures, and the fastener counts in real time.
- Match the width to the coil and profile the fabricator will actually run, or the panel count will be off.
Pick the panel width before you treat the cut list as final — it is the single input that ripples through the whole takeoff.
Trim, fasteners, and underlayment
- Trim & Flashing is derived from edge lengths — ridge, eave, rake, valley, and hip — and shown in linear feet plus the number of 10'6" stock pieces.
- Fasteners assume concealed clips at 24" spacing on standing seam panels, with clip screws, trim screws, and sealant scaled to panel and trim counts.
- Underlayment is sized in squares (1 square = 100 SF) with ice & water shield calculated for eave and valley coverage.
Panel lengths and trim come from satellite-derived geometry. Field-verify runs, penetrations, and special details before sending coil to be cut.