Lean-to — single pitch roof
Note on taking measurements
All dimensions must be based on external measurements of the building or structure involved and not internal measurements.
- These calculators are based on standard building shapes.
- They should be used with care if the building you are measuring involves a combination of these forms or differs in a significant way from those in the calculator.
- If in doubt seek advice from a qualified person or your Local Planning Authority.
Other Volume Calculators
Calculations needed for a dormer window with a flat roof structure.
Larger structure require a more complicated calculation. One end hip.
Complete structure require a more complicated calculation.
Larger structure require a more complicated calculation. Two end hips.