Corrugated sheet roofing material is widely available and easy to use.
Support spacing for corrugated sheets.
These purlins or cross members are spaced a as per the chart fig.
For the lighter material such as lightweight aluminum the common spacing length is 4 inches of clear gap.
Corrugated roofing maximum support spacing data.
Corrugations should run.
The recommended minimum pitch for corrugated roofing is 50.
5 7 wp corrugated sheets are installed on structurally sound support members that are positioned at right angles to the direction of slope or water flow.
Subtract that number from the width of the panel and then divide by 2 to come up with the spacing for the rafters.
3 below to correspond to the design snow and or wind load pressures.
Be careful not to tear the sheet.
For heavier material such as gage steel the metal roof purlins spacing length could go up to 4 feet.
With pliers multi grips or a shifting spanner closed down to approximately 2mm grip the valley corrugations 20mm in from the end of the sheet and turn up as far as possible.