6m Projection roofs require two perlins
Calculating roof max width coverage roof sheets are 500mm wide with polycarbonate sheets add 70mm with PVC sheets add 52mm for example a 3.5m roof uses 7 panels
With poycarbonate 7 x 500mm + 70mm = 3570mm
With PVC 7 x 500mm + 52mm = 3552mm
Prices shown are for roofs with PVC sheets to upgrade your roof to a polycarbonate sheet please use the drop down boxes.