Ali Deck Supa Joist

The Ali-Deck Supa-Joist is an integral part of the Ali-Deck System! This clever extrusion is designed to act as both a support post and big span joist. The connection plates allow for super fast installation and can be adjusted to suit most applications and conditions.

It has also been designed to be connected together to give additional strength for applications where larger spans are required. The Supa Joist system can be used as a standalone solution and can be used in conjunction with composite and timber decking solutions.

This all aluminium system is unique and modular so it can be extended to any length, it can also be simply connected together to create double the span
depending on the desired foundation spacings, see loadings for single joist span capabilities.

  • Traditional timber support structures are manufactured from timber which normally means a joist every 400mm, the beauty of the supa joist is that when used with the Ali-Deck system it only needs installing every 1900mm / 1200mm (depending on the loadings that are required) which means quicker installation.

Aluminium will never need maintenance like timber, it will not crack, warp, or swell, it’s impermeable to insects and deterioration, easy to cut and is fade and stain resistant!

Domestic Component Disposition: Joist Spans

SINGLE JOIST SPANS – Between Supports (Centre Line of Joists in mm) 600 1000 1200 1500 2000
SINGLE JOISE SPANS – STANDARD Specification 1/350 3600 3100 3000 2700 2500
SINGLE JOISE SPANS – FIRM Specification 1/480 3200 2800 2700 2500 2300
DOUBLE JOIST SPANS – Between Supports (Centre Line of Joists in mm) 600 1000 1200 1500 2000
DOUBLE JOIST SPANS – STANDARD Specification: 5000 4200 4000 3800 3400
DOUBLE JOIST SPANS – FIRM Specification: 4500 3800 3600 3400 3100
  • Domestic Load = 1.5Kn SqM

Commercial Component Disposition: Joist Spans

SINGLE JOIST SPANS – Between Supports (Centre Line of Joists in mm) 600 1000 1200 1500 2000
SINGLE JOISE SPANS – STANDARD Specification 1/350 2600 2300 2200 2000 1800
SINGLE JOISE SPANS – FIRM Specification 1/480 2400 2100 2000 1800 1700
DOUBLE JOIST SPANS – Between Supports (Centre Line of Joists in mm) 600 1000 1200 1500 2000
DOUBLE JOIST SPANS – STANDARD Specification: 3600 3100 3000 2800 2500
DOUBLE JOIST SPANS – FIRM Specification: 3300 2800 2700 2500 2300
  • Commercial Load = 4.0Kn SqM

The Full Range

Click on the buttons below to view our full range of Ali-Deck aluminium decking solutions.

Standard Decking
Slip Resistant Decking
Balcony Decking
Roof Terrace Decking