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Interlock Cladding

Interlock Cladding

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The ultimate wall cladding and façade system on the market for a uniquely sophisticated flat recessed appearance. Interlock offers adjustable expression joins and either vertical or horizontal installation to compliment any design.  

With a simplified effective install method of an interlocking groove and concealed fixings to the substrate frame it is suited to all levels of roofing.  

  • 25 mm express depth / 1 mm to 25 mm express join widths / 205 mm to 505 mm cover widths / Up to 9000 mm long panels / all dimensions are material and transport dependent, and open to customisation.
  • A superior architectural finish
  • Enhanced corrosion performance, and
  • A stronger, more reliable connection


Standard width with 15mm expression joins.  

25mm Rib  

Custom Widths available*  

The roofing/walling shall be 0.55 mm BMT Stramit SharpLine® cladding in continuous lengths with 25 or 38mm high ribs and flat trays spaced at specified centres to suit clip or direct fixing methods.

Sheeting material shall be protected steel sheet to Australian Standard AS1397, with a minimum yield stress of 300MPa (Grade G300) and an AM100/AZ150 coating with an oven-baked paint film of selected colour, or a plain AM125/AZ150 coating.

The sheeting shall be fixed to the purlins/girts in accordance with the manufacturer’s recommendations. Suitable fixing screws in accordance with Australian Standard AS3566, Class 3, shall be used at every support.

Sheets shall be laid in such a manner that the approved side lap faces away from the prevailing weather.

A minimum of 50mm shall be provided for projection into gutters. Flashings shall be supplied in compatible materials as specified; minimum cover of flashing shall be 150mm.

All sheeting shall be fixed in a workman-like manner, leaving the job clean and weathertight. All debris (nuts, screws, cuttings, filings etc.) shall be cleaned off daily.

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