Ridge Cap Count Calculator

Pro grade tool to plan ridge cap pieces with real world waste and multiple ridge or hip sections. Enter lengths choose exposure and bundles then get counts instantly with unit conversion helpful tips and printable summary. Advanced checks handle overlap choices and safety margins for wastage designed for contractors and DIY roofers and estimators.

Inputs

Separate sections with spaces new lines plus signs or semicolons. Negative values are ignored.
If your roof has hips include them here to count matching caps.
Includes cuts and breakage.
Typical values 18–29.
Optional safety margin.

Results

Enter your project details and press Calculate to see counts bundles and a breakdown of assumptions.

Assumptions

  • Exposure is the visible length per cap after overlap.
  • Waste covers cuts at ridge ends hips and handling losses.
  • All lengths are straight runs. Curved ridges may need additional waste.
  • Always confirm bundle counts on-site before ordering.

FAQs

1) What is cap exposure?

It is the visible length of each cap piece after overlapping the previous piece. Manufacturers specify an allowable range which directly changes the number of pieces needed.

2) Should hips use the same cap as ridges?

Often yes. Many systems use matching caps on ridges and hips so both are added to the linear total here for a single combined count.

3) What waste percentage is typical?

A common planning value is 10–15 percent. Complex roofs high pitches and many short runs can require more due to additional cuts.

4) How accurate are bundle counts?

Bundle piece counts vary by product and brand. This tool lets you enter the exact pieces per bundle to align with the product you will purchase.

5) Can I mix units?

Choose one unit system and stick to it for your inputs. The tool provides separate exposure fields so you can match the product spec in inches or millimeters.

6) Does pitch affect the calculation?

Pitch does not change linear length but steep roofs can increase waste due to handling and cut difficulty. Adjust the waste percentage to compensate.

7) How should I enter multiple sections?

Type all section lengths separated by spaces new lines plus signs or semicolons. The calculator adds them and ignores blank or negative values.

Important Note: All the Calculators listed in this site are for educational purpose only and we do not guarentee the accuracy of results. Please do consult with other sources as well.