Per roof plane. Run it once for each slope of the roof.

Roof length along eaves (m)

Eaves to ridge / cut length (m)

Sheet cover width

—Sheets to order

—Roof plane area

—Approx screws

Includes about 3% for side laps and trim. Add your eaves overhang to the cut length before ordering.

02 More tools

Other calculators

Steel is sold by weight, not by count. Enter the diameter, bar length and quantity to get the nominal weight your invoice will be built on.

Enter the slab or footing dimensions and the grade of concrete. You get bag count at nominal mix with 5% wastage allowed, plus a rough sand volume.

— Get started

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