How to Install Corrugated Roofing: 8 Steps (with Pictures)
Screw down the panels. Pre-drill the holes, and use 10 by 2 in (25.4 by 5.1 cm) screws with polycarbonate washers. Continue across the roof until it is completely covered, lapping over the previous panel by at least 2.5 inches (6.4 cm) minimum. Adjust the lap so that the last panel completes the coverage without making a cut lengthwise.