If you want to use our IBR profile to cover a structure then measure the width which is the left to right measurement and multiply the distance by 1.5 to get the amount of sheets one needs to place side by side including the overlap eg.
Structure 5 metres wide is 5m x 1.5 = 7.5 which means you will need 7.5 sheets to cover the distance. Round up to 8 for the amount of sheets since we do not make fractions of sheeting.
The lengths are easier. We supply standard lengths (1.8, 2.4, 3, 3.6, 4.2, 5.1 and 6m) as well as cutting custom sizes up to a maximum of 10.2 m long.