Stonegate Supplies

Roof Kit Calculator

Size a complete shed / flat roof kit.

Enter your measurements

Adjust the values below to calculate what you need.

Results are estimates based on standard coverage rates. Quantities include recommended waste allowance where shown. Always confirm with our team before ordering.

Your results

Roof area7.20 m²
Recommended kit5m × 5m kit
Edge trims4 lengths
Fixings36 screws