Roof Ridge Cap Calculator
Estimate roof ridge-cap pieces, bundle quantity and material cost from ridge length, hip length, exposure and package count.
Default project preview
7 bundles
Total cap run
78 ft
Base cap pieces
167
Order pieces
184
Purchased pieces
210
Calculator
Build the material order
Your order will appear here
Enter the project details and calculate a rounded material estimate.
Methodology
Transparent calculation
BuildMeter converts every input to a consistent internal unit, applies the selected allowance, and rounds products up to whole purchasable units.
Total cap run = ridge length + hip length. Base pieces = total run ÷ installed exposure. Waste is added, then bundles are rounded up from pieces per bundle.
FAQ
Roof Ridge Cap Calculator questions
Are ridge caps counted by full shingle length?+
No. Use the installed exposure—the portion of each cap left visible after overlap.
Should hip lines be included?+
Yes, when the roof uses the same cap product on hips. Enter the combined hip length separately.
Does this include ridge ventilation?+
It estimates cap material only. Ridge vent length, end plugs and fasteners should be planned separately.