Taranaki Steelformers encourages professional installation of roofing and rainwater products. However, with New Zealand’s ‘Do it Yourself’ attitude, Taranaki Steelformers has provided this helpful section for those farmers or DIYers wanting to purchase and install a basic gable or lean-to roof.

With this roof calculator you can work out the quantity of sheets required, the cut length of each sheet and the total area of the roof. Simply enter the roof pitch (in degrees), the roof width (in metres), the roof length and select the roofing material type.

The above figures are intended for estimation purposes, as coverage may vary in certain situations.

Select Profile type and Thickness to calculate the purlin spans and fastener locations

Important: Coverage figures are based on 0.40mm material. Coverage varies with different thickness material.

Corrugate
Ribline
Styleline
NC710