How to use the roofing cost calculator
- Roof area (sq ft): Measured sloped roof area.
- Waste allowance (%): Extra area for cuts and valleys.
- Material per sq ft: Your material rate.
- Labor per sq ft: Your labor rate.
- Other fixed costs: Tear-off, disposal, permits, and accessories.
- Select the button and review the result.
Worked example
Use actual local quotes for final budgeting.
Method and limitations
Adjusted area × (material + labor) + fixed costs.
Does not calculate roof area from house footprint or assess roof safety and condition.
Common questions
Why might another result be different?
Inputs, rounding, policies, rates, and assumptions can differ. Compare like-for-like values and use current official information when a rate or rule can change.
Does NidXee save my entries?
No. The calculation runs in your browser. Reloading or closing the page may clear it.