About the Roof Cost Calculator
Total re-roofing cost including materials, labour, stripping the old roof and scaffolding.
Also known as: new roof cost, roof replacement cost, reroofing price, roofing quote.
How to use this calculator
- Enter roof area, material per m², labour per m², strip and dispose per m² and the other fields.
- The result updates instantly as you type — press Calculate (or Enter) at any time.
- Review the breakdown shown under the main result.
- Use Copy result or Share to save the answer or send a link with your inputs.
Roof Cost formula
total = (materials + labour + stripping) × area + scaffolding + contingency
Worked example
Using the values pre-filled in the calculator above:
- Roof area = 120 m²
- Material per m² = 35
- Labour per m² = 45
- Strip and dispose per m² = 12
- Scaffolding = 1,200
- Contingency = 10 %
the calculator returns:
- Total roof cost: 13,464
- Materials: 4,200
- Labour: 5,400
- Stripping and disposal: 1,440