ONDULINE OVERSHEETING Steel Fixing Detail

Steel oversheeting support structures can be fabricated following the same basic principles applied to timber structures.  Galvanised steel multibeam rails are fixed from eaves to ridge with drill screws through the roof covering into the existing purlins.  These are then overlaid with steel 'Z' section purlins at 600mm centres to which the Onduline sheets are fixed using the Onduline Stelfix drill screw.

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