Siding panels
Subtract openings and calculate panels by exposed coverage.
How this works
Panels = ceil((wall area − openings) × allowance / exposed panel coverage).
Example
Using the example inputs, whole panels is 121 panels.
- Gross wall area
- 1000 ft²
- Door and window area
- 120 ft²
- Exposed coverage per panel
- 8 ft²
- Extra allowance
- 10 %
- Whole panels
- 121 panels
Scope and assumptions
Quantity/geometry estimate only. Not structural design, building-code approval, or installation instructions.
OpenStax mathematics reference