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Main > Building & fixing > Building > Metal > Roofing
Fasteners for corrugated metal sheet:


  • At the top and bottom battens, the tek-screw should be driven at the top of every second crest. Intermediate battens can have screws every third crest. Do not fasten the top row of screws until the ridge capping is in place.

  • For most roof slopes, the top batten should be placed a maximum of 100mm from the apex of the rafters or ridge beam / board, so the ridge capping, and roof cladding can be fastened with the same screws. But over 45 degrees, the batten needs to be much closer to the apex, such as 25 - 50mm.

  • For ordinary slopes, corrugated foam should be placed between the corrugated sheets and the ridge capping to prevent water, dust and embers from entering the roof space. Also, cutting a wavy edge to the ridge capping to fit flush with the corrugated iron cladding, on ordinary slopes, will help.

  • Fold up the ends of the metal sheets at the top, to prevent rain driving in over the top of the sheets.

  • Fasten the flashing before the ridge capping.

   kellyjones00 (593)

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