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Firmlock Beams and Accessories

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Firmlock Beams and Accessories

Firmlock Beams and Accessories

LYSAGHT FIRMLOK™ BEAM is a structural beam that is light, strong and universal in it’s applications. It is developed for maximum aesthetic and structural performance. It consists of two interlocking Cee sections.


  • Developed for maximum aesthetic and structural performance.
  • Three Beam sizes are available in stock (100mm, 150mm and 200 mm).
  • High load capacity with excellent torsional resistance.
  • Uniform in quality and does not warp or split, and it doesn’t need painting.


The LYSAGHT FIRMLOK™ universal brackets are also stocked by Marco Roofing in powder coated in matching colours.


Common Uses of this product

Purlin and rafter applications in verandahs, extensions, carports and awnings. Economical floor solutions when used as joists and bearers.



  • Please contact us if use is intended in adverse conditions (marine, severe industrial or unusually corrosive environments)
  • Lead, copper, bare steel and green or chemically treated timbers are not compatible with this product. Contact and water runoff should be avoided.


Category: Outdoor Living,

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