Roof materials
Linear stock and coverage quantity calculator
Estimate linear purchase units from measured segments and coverage. Roof trim, starter/ridge bundles, gutter sections or downspout stock takeoff.
Try the calculation
Add measured segments and round up by the effective coverage of one purchase unit. Product laps and per-run cut allocation are not derived.
Adjustable example. Change these illustrative inputs to match your task, then recalculate. Reset restores the example and its result.
Understand the result
How this calculation works
Drip edge quantity adds eave and rake footage before rounding to stock coverage.
Steps
- Enter each measured edge segment and choose pieces, bundles or sections as the purchase unit.
The form starts with the worked example below. Change its values and selections to match your task; Reset restores the example.
Formula
units = ceiling((eave length + rake length) รท coverage per unit).
Variables and units
- Segment 1 length (ft)
- Required. Zero is accepted. Starting example: 120. Replace it for your task.
- Segment 2 length (ft)
- Required. Zero is accepted. Starting example: 80. Replace it for your task.
- Effective coverage per unit (ft)
- Required. Use a positive value. Starting example: 10. Replace it for your task.
- Purchase unit (selected option)
- Options: Pieces; Bundles; Sections. Initial selection: Pieces.
What the result means
The result is a stock quantity estimate. It does not assign corner cuts or laps.
Worked example
Inputs: Segment 1 length = 120; Segment 2 length = 80; Effective coverage per unit = 10; Purchase unit = Pieces.
Calculation: 120 ft + 80 ft = 200 ft; at 10 ft per piece, the result is 20 pieces.
Result: 20 pieces.
Frequently asked questions
Can one segment be zero?
Yes, when that edge is absent from the scope.
Are eave and rake coverage the same?
Only use one unit when the selected product covers both.
Does this include fascia repair?
No, only the entered edge material quantity.