

Recycled Plastic Joist, 50mm x 100mm x 3.6m length, Black
Cladco recycled plastic joists are a high-quality, environmentally friendly, durable product, which can be used to create the base for any garden decking project. The low-maintenance joists can easily be cut to length and installed.

More About Our Recycled Plastic Joists
Any great decking project starts with the frame. Making sure your joists are secure, installed correctly, and structurally sound is paramount for a long-lasting deck project.
Cladco recycled plastic joists are a high-quality, robust and durable joist solution, available in black. These can be used with composite, Nordeck or timber decking boards.
Our plastic joists are manufactured from 100% recycled plastics, using state of the art technology. Post-consumer plastic is shredded down, melted and formed into moulds, creating high-quality and durable Joists.
Joist specifications
Length: 3.6m
Width: 100mm
Depth: 50mm
Colour: Black
Plastic joists are an innovative and versatile alternative to timber joists and can support your decking project for many years to come, without the need for annual maintenance. Unlike wood, plastic lumber does not require regular treating or maintaining, and should not splinter or rot. The lack of maintenance helps to reduce future costs for your decking project.
Cladco recycled plastic joists come with a 20-year warranty, along with a range of other beneficial properties, including:
Made using 100% recycled plastic – recycled and recyclable
Superior strength compared to timber
Manufactured in the UK
An environmentally friendly and long-term solution to using timber
Can be used on concrete, grass or uneven ground
For use with Nordeck, Composite Decking and Timber Decking
Should not rot or splinter
Low maintenance
Recycled plastic joists are easy to install and can be cut to size using traditional wood-working tools, so no matter your decking design, these joists should be able to fit perfectly.
Cladco plastic joists require support every 1m for the structure of the joist itself. When installing Signature composite decking onto these joists, we advise 400mm centres. For use with Nordeck decking boards, we advise 300mm centres.
Looking for a shorter plastic post?
See our 3m recycled plastic joist, 50mm x 125mm
Looking for another size?
See our 3m recycled plastic joist, 100mm x 100mm
Or browse our recycled joist department for decking frames and more…

Order A Sample Pack!

Download the datasheet for Recycled Plastic Joist, 50mm x 100mm x 3.6m length, Black
Type | When? | Cost? | ||
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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 | Est. 15 working days* Roofing items 7-10 working days* |
£360.00 | ||
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Millboard Delivery | Orders under £2,000 | Est. 5 working days* | £192.00 |
Orders over £2,000 | Est. 5 working days* | FREE | ||
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Parcelforce Standard | (Small Parcels) | 3-5 working days* | £8.50 |
Parcelforce Standard | (Large Parcels) | 3-5 working days* | £30.00 | |
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Sample Packs via Courier | 5 working days* | FREE |
*Please allow for public holidays and weekends (non-delivery days)
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:
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.

Our Okehampton HQ and Warehouses (Devon)

Our Andover Warehouses (Hampshire)








Customer Collection Notice
For those customers wishing to collect materials, we ask you report to the office first in order to be seen by a member of the sales team. Your goods will then be picked and brought to your vehicle.
Please note that during busy periods you may experience a wait while our yard staff serve other customers or are loading/unloading other vehicles.
We respectfully draw your attention to the following points:
- It is the ultimately the responsibility of the customer to load his/her vehicle and to ensure the goods are safely/ securely strapped down.
- Our staff will be happy to assist you load your goods onto appropriate vehicles by way of fork lift trucks. Our staff will not handball any goods into enclose vehicles. The loading of the vehicle is carried out entirely at the customers own risk. We will not be held liable for any damage that may occur to your vehicle or goods collected from our premises during the transport of said goods.
- It is the responsibility of the customer to ensure both their vehicle and the goods are safe when they leave our premises.
- We can advise the approximate weight of materials prior to you arriving so that you can be sure your vehicle is capable of carrying the intended load. Please ensure that you bring appropriate ropes, straps or other securing materials as we are unable to provide you with any upon arrival.
- We strongly recommend you bring suitable protection materials to prevent your ropes/straps etc. be damaged by these edges. We recommend that you use good quality protective gloves when handling materials.