AliDeck Supa Joist for Aluminium Metal Decking

The AliDeck Supa Joist is an integral part of the AliDeck System and is our heavy-duty joist option, designed to act as both a support post and a large-spanning joist.

Compatible with all AliDeck decking boards and fully compliant with fire regulations, achieving A1 following independent fire safety tests. The Supa Joist is ideal for use on balconies, terraces and walkways that require the largest beam span possible.

  • Fire Resistance: A1 and A2fl-s1

  • Span: up to 3000mm

  • Dimensions: 80mm x 105mm

  • Weight: 4.93kg per linear metre

  • Standard Stock Lengths: 6m

  • Coating Thickness: 60-80 microns

  • Warranty: 30 years

  • Life Expectancy: 60 years

  • Colours: Full Range

AliDeck Non-Combustible Aluminium Metal Decking Supa Joist

Build complex structures using the AliDeck Supa Joist

The AliDeck Supa Joist was designed to provide the versatility to act not only as a support beam but also as a post. This heavy-duty joist allows for structures of any size and shape to be constructed from scratch, to create raised deck areas, steps, walkways, and much more.

By coupling the Supa Joist with our Adjustable Feet, and our L and T brackets strong and stable build-up can be easily achieved. AliDeck Nosing Profile can be applied to the risers of constructed steps to provide a neat and aesthetic finish.

Once your raised platform structure is in place, it is then a simple task to install your AliDeck aluminium decking boards.

The Supa Joist is a large spanning, heavy duty aluminium support beam. Capable of spanning 3 metres, the Supa Joist has been cleverly designed to allow multiple joists to be connected together to achieve even greater strength for applications where larger spans are required.

The Supa Joist is compatible with the entire AliDeck range of boards, pedestals, and accessories.

AliDeck Supa Joist Foot

Supa Joist Foot

AliDeck Supa Joist L Connection Plate

L Connection Plate

AliDeck Supa Joist Large L Bracket

Large L Bracket

AliDeck Supa Joist Small L Bracket

Small L Bracket

AliDeck Supa Joist T Connection Plate

T Connection Plate

Supa Joist can be notched and fixed within steelwork to achieve low build-up height using our Notched Supa Bracket

Aluminium joists are far superior than timber or steel joists as they will not rot or rust; aluminium is naturally resistant to corrosion. Aluminium is also non-combustible, making it the only viable option when used in areas that require fire-resistant materials only.

The AliDeck Supa Joist can be used with any AliDeck System Decking Board and is fully compatible with all of our Pedestal solutions.

  • Benefits include:

    • Increased span capabilities against timber or composite
    • Extremely strong and durable
    • All aluminium
    • Quick and easy to install
    • Low maintenance
    • Recyclable
    • Stable in all weather conditions
AliDeck Non-Combustible Aluminium Metal Decking Supa Joist Assembly Diagram
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AliDeck Supa Joist Deflection Test Result

 AliDeck Joist Point Load Applied Span Tested Max. Deflection @ L/360 Achieved Deflection
Supa Joist 1.4kN 3000mm 8.33mm 4.67mm
AliDeck Senior Board Supa Joist and Pedestal Bracket Full System

AliDeck Datasheets

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AliDeck Multi Directional Pedestal

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