Fire-Rated Aluminium Decking Joists for Balconies, Terraces, and Walkways
The AliDeck System is a comprehensive range of aluminium decking system solutions, designed for use on steel or concrete inset balconies but also ideal for use in any decking application, such as terraces or on walkways. Constructed from T6 6063 grade aluminium and manufactured in the UK, AliDeck decking joists are non-combustible and fire-rated A2-s1, d0 and A1 when supplied uncoated in mill-finish so are fully compliant with all fire performance requirements in Building Regulations.
AliDeck decking joists provide unrivalled versatility, with multiple options to suit all requirements
Supa Joist can span up to 3500mm while the highly popular Low Joist spans up to 2000mm, and even up to 1500mm when installed on its side!
The complete range also includes, our light-weight and cost-effective Lite Joist, a highly versatile joist offering multiple install options whilst spanning a respectable 800mm while our ultra-low-profile Micro Joist spans 300mm while delivering a build-up of only 20mm.
To meet the ever-changing demands of building innovation and regulation, we have recently designed and launched Eco 50 and Eco 30 joists, which provide significant cost savings and quick hassle-free installation, achieving spans of 1000mm (Eco 50) and 600mm (Eco 30).
We are proud to offer a 30-year warranty with a life expectancy of at least 60 years on our whole range to give our customers total peace-of-mind
AliDeck Joists for Frames and Subframes
Discover the versatility of aluminium supports and subframes – perfect for decking, balconies, terraces and walkways. Our innovative joists provide the ideal foundation for durable, long-lasting outdoor spaces.
Benefits of Aluminium Frames and Subframes
Unparalleled Versatility
Suitable for ground-level, elevated, and rooftop decks.
Precision Engineering
Ensures a level, stable surface for your deck, balcony, terrace or walkway.
Exceptional Durability
Resist corrosion, rot, insect damage and maintain structural integrity in all weather conditions.
Lightweight But Strong
Providing excellent load-bearing capacity and easy handling during installation.
See What Our Joists Can Do
Frequently Asked Questions
The Eco 30 and Eco 50 are new additions to the AliDeck aluminium decking system. They are specifically designed for installations that require low build-up and long spans, respectively.
Watch the videos below to take a closer look:
These new joists complement the existing range by offering more options for different project requirements. They are designed to work seamlessly with AliDeck decking boards, joists, and pedestals.
The Eco 30 joist has a 30mm profile height and a maximum recommended span of 600mm. It is lightweight, cost-effective, and easy to install.
The Eco 50 joist has a 50mm profile height and a maximum recommended span of 1000mm. It offers multiple fixing options and is designed for quick and easy installation.
These joists are fire-rated, low maintenance, and recyclable. They also offer increased span capabilities compared to timber or composite materials.
The Eco 30 is ideal for projects requiring low build-up heights, such as terraces and walkways. The Eco 50 is designed for installations requiring long spans, making it suitable for balconies and terrace areas.
The Eco 30 has a maximum recommended span of 600mm, while the Eco 50 can span up to 1000mm.
The Eco 30 has dimensions of 30mm (depth) x 80mm (width) and weighs 1.187 KG/lm. The Eco 50 has dimensions of 50mm (depth) x 80mm (width) and weighs 1.576 KG/lm.
Both joists are value-engineered to provide cost-effective solutions. Their lightweight nature and easy installation process also contribute to labour savings.
Yes, both the Eco 30 and Eco 50 joists are fire-rated A2-s1, d0 and A2fl-s1. A1 when mill finish.
Both joists come with a 30-year product warranty and have an expected lifespan of 60 years.
Yes, both joists are made from 67% recycled content and are fully recyclable.
These joists are designed for quick and easy installation and are compatible with AliDeck adjustable pedestals.
Yes, both the Eco 30 and Eco 50 are designed to work in conjunction with AliDeck adjustable pedestals.
Both joists are available in either a PPC (Polyester Powder Coating) or in mill finish, depending on your project requirements.
Both joists can handle a 4kN loading between pedestals.
Yes, these joists are designed to work with the entire range of AliDeck decking boards.
Both joists contain 67% recycled content.
Being made of aluminium, these joists are low maintenance and stable in all weather conditions.
The joists are available in 6m lengths as standard, but you may need to consult with AliDeck for custom lengths.
- Full technical data sheets available
- CAD and DWG files for architects and specifiers
- NBS Source listings
- Installation guides
- Load testing documentation
- CPD learning sessions available
- In-house training academy for installers
- Direct support via phone (01622 534042) or email (info@alideck.co.uk)
- 30-year manufacturer’s warranty
- 60-year minimum life expectancy
- Warranty covers splitting, cracking, warping, splintering, rotting, twisting and manufacturing defects
- All joists feature integrated bolt channels for quick installation
- Compatible with AliDeck’s range of adjustable pedestals and brackets
- Can be used with spreader plates for waterproof membrane installations
- Zero maintenance beyond basic cleaning
- Available in mill finish or powder-coated in 10 standard colours (custom RAL colours available)
- Balconies (both new build and remediation)
- Terraces
- Walkways
- Steel or concrete inset applications
- Any external decking application requiring non-combustible materials
- Compatible with all AliDeck decking boards and system components
- All joists are manufactured from 6063 T6 grade aluminium
- 67% recycled content
- Fire rated A2-s1, d0 when coated, A1 when in mill finish
- Fully compliant with current building regulations
- Non-combustible and suitable for high-rise applications
AliDeck offers 6 types of joists, each designed for different applications:
Supa Joist:
- Largest profile (105mm x 80mm)
- Maximum span 3500mm
- Weight: 4.93KG/lm
- Heavy-duty support bearer for extreme spans
Low Joist:
- Profile: 50mm x 80mm
- Maximum span 1200mm (2000mm when installed on side)
- Weight: 3.11KG/lm
- Popular option balancing span and build height
Lite Joist:
- Profile: 30mm x 80mm
- Maximum span 800mm
- Weight: 1.926KG/lm
- Low-profile, cost-effective option
Micro Joist:
- Smallest profile (20mm x 50mm)
- Maximum span 300mm
- Weight: 0.719KG/lm
- Ultra-low profile for minimal build heights
Eco 30 Joist:
- Profile: 30mm x 80mm
- Maximum span 600mm
- Weight: 1.187KG/lm
- Value-engineered low-profile option
Eco 50 Joist:
- Profile: 50mm x 80mm
- Maximum span 1000mm
- Weight: 1.576KG/lm
- Cost-effective option for longer spans
