Roof materials
Linear roof material bundle calculator
Estimate linear roof-material bundles. Starter strip or ridge/hip cap material takeoff.
Try the calculation
Estimate linear roof-material bundles from measured length and product coverage. Measure the appropriate roof feature and use the selected product coverage.
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
Linear starter material is purchased in coverage units rather than roof squares.
Steps
- Measure the feature receiving the material, then enter the product coverage for one bundle.
The form starts with the worked example below. Change its values and selections to match your task; Reset restores the example.
Formula
bundles = ceiling(length ÷ coverage per bundle).
Variables and units
- Total material length (ft)
- Required. Use a positive value. Starting example: 180. Replace it for your task.
- Coverage per bundle (ft)
- Required. Use a positive value. Starting example: 33.33. Replace it for your task.
What the result means
The rounded count follows the supplied coverage. It does not add corners, cuts or a second waste allowance.
Worked example
Inputs: Total material length = 180; Coverage per bundle = 33.33.
Calculation: 180 ft ÷ 33.33 ft per bundle ≈ 5.40, so 6 bundles.
Result: 6 bundles.
Frequently asked questions
Can this be used for starter strip?
Yes, when the bundle coverage describes that product.
Does it calculate ridge caps?
Use the ridge-cap page when the product coverage differs.
Should I include both eaves?
Add both measured lengths before entering the total.