Overlapped Panel Coverage calculator.
Calculate the finished width covered by a known number of overlapping panels.
Your inputs
Use measurements from your plan and properties from your chosen product. Any prefilled values are illustrative.
A clear estimate starts here.
Enter your dimensions and product details to see the quantity and purchase breakdown.
Formula and assumptions
How this calculation works.
There is no overlap deduction at the two free edges. This checks the coverage of a known panel run rather than choosing a panel count from effective width.
A worked example
Illustrative inputs only. Product properties and design dimensions are not recommendations for your project.
- Nominal panel width
- 1 m
- Overlap at each joint
- 100 mm
- Panels in one run
- 5
Finished run coverage: 4.6 m
Before you purchase
Use dimensions from your plan and properties from your chosen product. Any design spacing, section or fixing pattern must already be specified.
Method: dimensional arithmetic and user-supplied specifications. Software checks: 2026-10-04. Calculation and review policy.
Check your purchase assumptions
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