AliDeck Non-combustible Supa Joist for AliDeck Aluminium Decking System

The AliDeck aluminium decking system is a complete solution for all deck projects, on balconies, terraces, and walkways. Consisting of a range of decking boards, joists, and pedestals, the System’s inter-compatibility provides remarkable versatility and a solution for all requirements.

Our Supa Joist is our heavy-duty support bearer, specifically designed for installations that require extreme spans. With a 105mm profile height, the Supa Joist’s extreme strength allows for a maximum recommended span of 3500mm. With bolt channels designed into the sides of the profile, fixing decking boards, brackets or pedestals is quick and easy and the Supa Joist can even be used to construct framework and platforms. The profile design also allows two Supa Joists to be connected together to provide a double-height extra-strong bearer capable of spanning an incredible 6000mm!

Maximum Span
Joist Depth
Joist Width
Joist Weight
Stock Length
Product Warranty
Expected Lifespan
Recycled Content

Supa Joist Datasheet, CAD & DWG Files

Testing Report and Installation Guide

AliDeck Supa Joist in NBS Source

Standard Colours

  • Confirm colour selection with a RAL colour swatch before purchase. Any non-standard RAL colour available on request as special order

Non-combustible aluminium joist solution for balcony, terrace and walkway decks with the AliDeck System

Supa Joist Standard Drawing
  • Dimensions:
    Height: 105mm | Width: 80mm | Stock Length: 6000mm

Speed and ease of installation is essential to the success of your balcony project. The AliDeck Supa Joist has been designed to integrate seamlessly with the AliDeck System and the bolt channels allow for quick installation times.

The AliDeck Supa Joist is A2-s1, d0 fire-rated when coated (A1 when mill finish) and is fully-compliant with all applicable legislation.

The AliDeck Supa Joist is custom engineered for compatibility with the entire range of AliDeck aluminium deck boards.

All AliDeck Joists are constructed from 100% aluminium (6063 T6 grade), up to 67% of which has been recycled to make these products eco-friendly.

Provided in mill-finish or powder-coated, zero maintenance beyond simple cleaning is required.

The AliDeck System is supplied with a 30 year warranty against splitting, cracking, warping, splintering, rotting, twisting and material or manufacturing defects. It has a minimum 60 year life expectancy.