What is the minimum pitch for Onduline sheets?

The minimum roof pitch to lay Onduline roofing sheets is 5 degrees / gradient: 1 in 11 the sheets being laid with an End Lap of 300mm. Sheets laid on a fully supporting decking on purlins to maximum of 610mm centres. Sheet Side Lap: 2 Corrugations. Fixings: 20 per sheet. Consult the Onduline Fixing Guide for full instructions.

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