Cladding Panel End Trim and Joint Order calculator.
Count separate panel courses after user-specified end trimming, with joint gaps only between neighbouring 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.
Count separate panel courses after user-specified end trimming, with joint gaps only between neighbouring panels. Usable panel = stock − 2 × end trim; panels/run = ceil((run + joint gap) / (usable panel + joint gap)).
A worked example
Illustrative inputs only. Product properties and design dimensions are not recommendations for your project.
- Selected panel stock length
- 3 m
- Specified trim at each panel end
- 0.1 m
- Specified gap between panels
- 0 mm
- Measured run length
- 5.7 m
- Identical runs
- 2
Panels after supplied end trims: 6 panels
Each course is rounded separately. Gaps count only between panels; offcuts are not reused. This arithmetic does not choose joint or trim dimensions.
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.
All product dimensions, coverage, density, allowances and joining rules must come from your supplied plan or selected product. No building-code values are inserted.
Method: dimensional arithmetic and user-supplied specifications. Software checks: 2026-10-05. Calculation and review policy.