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4m Aluminium Decking Joist 50mm x 50mm

£52.32
(2)

Cladco 4m aluminium joists are designed to create a supportive substructure for aluminium decking installations. These aluminium joists are powder-coated and reinforce the structure of aluminium decking projects whilst being ultra-lightweight with superior strength when compared to timber or composite joists.

SKU: ALUJB40

delivery NATIONAL DELIVERY - checking... from £0.00
ANDOVER COLLECTION
OKEHAMPTON COLLECTION
Total Price: £52.32 inc VAT
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Details

Begin Your Aluminium Decking Project With Our Aluminium Joists

Creating the supportive foundation for your aluminium decking boards is vital to ensure a high-quality finished product. Cladco aluminium joists will enable you to correctly install your decking boards upon a secure and supportive substructure.

These Joists can also be installed as a supportive substructure for timber and composite decking installations as well as aluminium boards.

Joists specifications

  • Length: 4m
  • Width: 50mm
  • Thickness: 50mm
  • Weight (Approx.): 4.04kg
  • Colour: Black
  • Material: Non-corrosive powder-coated aluminium

Manufactured from high-quality powder-coated aluminium, these joists are 4m in length and are available in black only. Due to the joists being concealed beneath the decking boards, they have no need to be colour-matched to the boards themselves.

These joists have an A2 fire rating alongside an S1 non-combustible rating and so can be installed in living spaces that are more than 18m high. Before carrying out any installation, ensure you have checked all information with your building regulator and contractor prior to purchase.

Looking for a skirting trim?

See our 2.2m aluminium skirting trim

Looking for a corner trim?

See our 2.2m aluminium corner trim

Or browse our aluminium decking department for decking boards and more…

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Samples plus minus

Order A Sample Pack!

The best way to choose your preferred colour is with our Sample Packs. Order Sample Packs
Installation Guide plus minus

pdf Download our printable installation guide.

Specifications plus minus
Colour
Black
Weight
4.04kg
Technical Information plus minus

pdf Download the datasheet for 4m Aluminium Decking Joist 50mm x 50mm

Technical Image 1 Technical Image 2
Delivery plus minus
Type When? Cost?
National Delivery Orders under £1,000 Est. 5 working days*
Roofing items 7-10 working days*
£192.00
Orders over £1,000 Est. 5 working days*
Roofing items 7-10 working days*
£96.00
Orders over £1,500 Est. 5 working days*
Roofing items 7-10 working days*
FREE
Scotland Delivery Postcodes: PA, PH, DD, AB, IV, & KW Est. 15 working days*
Roofing items 7-10 working days*
£360.00

Millboard Delivery Orders under £2,000 Est. 5 working days* £192.00
Orders over £2,000 Est. 5 working days* FREE

Parcelforce Standard (Small Parcels) 3-5 working days* £8.50
Parcelforce Standard (Large Parcels) 3-5 working days* £30.00

Sample Packs via Courier 5 working days* FREE

*Please allow for public holidays and weekends (non-delivery days) 

Collection plus minus

Some of our products are available for collection from our warehouses in Okehampton (Devon) and Andover (Hampshire) - This option will show at checkout, when available.

Standard collection lead time is 3-5 working days, this may vary depending on the product. If you would like to collect your order after 2 hours, please choose this option at checkout.

Please note that collections are only available from Monday-Friday, 08:00 - 17:00 & Saturday, 08:00 - 12:30 (Note: this IS the cut off time for collections, despite our closing time of 13:00)

Please Note The Following Prior To Collection:

No Cutting On Site

PPE/Hi-Vis Must be Worn At All Times

AlL Visitors Must Report to Reception


Vehicles we can and cannot load

Cladco Profiles will only load flatbed lorries and flatbed trailers for insurance purposes. If the appropriate vehicle is not available, two people would be required for a collection.

Cladco Profiles will NOT load any vehicles with roof racks, horse boxes, cattle lorries or fixed-sided trailers. Cladco Profiles has the right to refuse loading a vehicle for any reason.

Before arranging a collection, please read our Customer Collection Notice below.

Okehampton

Our Okehampton HQ and Warehouses (Devon)

Hampshire

Our Andover Warehouses (Hampshire)

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Customer Collection Notice

Please ensure you have pre-booked your collection slot before travelling to site.

When arriving to collect your order, please report to a member of our Warehouse Team who will register your arrival and locate your goods. Once ready, your items will be picked and brought to your vehicle loading area.

During busy periods, there may be a short wait while our yard team assist other customers or complete other loading tasks. We always do our best to work within your booked collection time.

We respectfully draw your attention to the following important points:

  • Loading is ultimately the customer’s responsibility. While our team can assist with mechanical loading using forklifts, we cannot handball items into enclosed vehicles. Customers must ensure their vehicle is suitable and that goods are safely loaded and adequately secured before leaving the premises.
  • Sharp sheeting, metal goods, and long/heavy items may pose additional handling risks. Please come prepared with high-quality protective gloves, and any appropriate protection materials to avoid damage to your vehicle or restraints (e.g. ropes or straps). The edges of roofing sheets and metal products can be extremely sharp, and care should be taken when handling.
  • We strongly recommend that customers bring their own straps, ropes, or other securing materials, as we are unable to provide these at the point of collection.
  • If you are unsure of your vehicle’s load capacity, we can advise the approximate weight of your order in advance. It is your responsibility to ensure your vehicle is suitable for transporting the goods safely and legally.
  • Cladco will not be held liable for any damage to your vehicle or goods once they have been loaded and leave our premises. Loading assistance is provided entirely at the customer’s own risk.

Click & Collect – Pre-Booking Required

You are welcome to collect your order from either our Okehampton (Devon) or Andover (Hampshire) site. All collections must be pre-booked in advance so your items can be picked, packed and ready for you.

Please do not travel to site without a confirmed collection time, as we cannot guarantee your order will be available.

Once your items are ready, you will receive an email with a link to book your collection slot. Please note, same-day collections are not available and bookings must be made at least two hours in advance.

When you arrive, please bring your order confirmation and follow the signage to the collection area where a member of our team will assist you.

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Frequently Asked Questions
No, these boards are only available in black - the colour of the joist does not need to match the decking boards as they will not be visible in the foundations of the deck.
They are 4m in length, 50mm wide and 50mm thick. They also weigh approximately 4.04kg.
Yes. While ideal for aluminium decking, these joists are also suitable for supporting timber or composite decking boards, offering versatility across different project types.
Standard tools are generally sufficient. For best results, refer to our official aluminium decking installation guide and always use the recommended fixings and accessories suited to your decking type.

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Reviews
Customer Reviews
5 Based on 2 reviews
Excellent finish

Price

Quality

Value

I replaced a small grass area as I wanted something that didn’t need any maintenance. These joists were easy to work with and install once the concrete was down. Definitely recommend.
Very impressed all round!

Price

Quality

Value

I was surprised how light these joists are compared to the composite ones. My decking feels really stable and I am so pleased with how it looks. Cladco made everything very effortless, from ordering to delivery.
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