

Recycled Plastic Joist, 50mm x 150mm x 3m length, Black
Manufactured using 100% recycled plastics, Cladco joists are a high-quality, robust and durable product that is easy to install, ensuring your garden decking is secure and structurally sound. Available in black and a range of sizes, our plastic joists are easily customised to specific project needs.

Discover Our 100% Recycled 3m Plastic Joists
A sturdy base is the main starting point for any quality decking build. Structurally sound and secure joists, that have been correctly installed, are paramount if you want your decking project to last.
Cladco recycled plastic joists are a robust, durable, and high-quality product made from 100% recycled end-user plastics. Available in black, the joists can be installed under Nordeck, Millboard®, timber or composite decking boards.
Joist specifications
Length: 3m
Width: 150mm
Height: 50mm
Colour: Black
Our range of recycled plastic joists are supplied with a twenty-year warranty, alongside other benefits which include:
Higher strength versus timber
UK manufactured
Eco-friendly, long-lasting alternative to timber
Installable on grass, concrete or uneven terrain
Compatible with multiple decking boards
Splinter and rot-resistant
No need to varnish, treat or sand
Upkeep-free
Simple to install, these joists can be cut to custom sizes using traditional hand tools, so whatever the shape and size of your decking project, these joists will fit seamlessly.
Looking for a longer plastic post?
See our 3.6m recycled plastic joist, 50mm x 100mm
Looking for another size?
See our 3m recycled plastic joist, 50mm x 125mm
Or browse our recycled joist department for decking frames and more…

Order A Sample Pack!

Download the datasheet for Recycled Plastic Joist, 50mm x 150mm x 3m 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.