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The UK's most affordable, high-quality decking boards

4m Composite Joists/Batten

Rating:
87% of 100
£11.88

About this product

Cladco 4m composite joists and battens offer a versatile solution for your outdoor projects. Use them as composite joists to support your garden decking or as composite battens for exterior wall cladding installations. Manufactured from the same durable wood-plastic composite material as our decking and cladding boards, they’re designed to work seamlessly as part of a complete system - ideal for long-lasting, low-maintenance substructures.

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Total Price: £11.88 Inc VAT
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4m Composite Joists/Batten

4m Composite Joists/Batten
4m Composite Joists/Batten

Online Decking Calculator

Use our calculator to work out how many boards and fixings you need for your project.

Details

About Our 4m Composite Joists/Battens

Bring your composite decking or cladding to life with Cladco 4m composite joists/battens. Designed as a vital structural component, these joists and battens provide reliable support for the installation of composite boards.

Ideal for use as decking joists, they offer a durable, weather-resistant base for your outdoor space. Alternatively, they can be installed as cladding battens, either vertically or horizontally, depending on your project’s design. Made from the same composite material as our boards, they offer a consistent, low-maintenance solution for any outdoor build.

Joist specifications

Length: 4m
Width: 50mm
Height: 30mm
Weight: 5.16kg approx.

Cladco composite joists and battens are supplied in a dark charcoal colour, providing a sleek and modern finish to any substructure. For decking installations, joists should be spaced no more than 400mm apart, while for wall cladding applications, battens should be spaced at a maximum of 500mm apart to ensure proper support.

As a general guideline, we recommend one joist per square metre of decking. For best results, especially in decking projects, joists should be installed over a solid concrete base to create a sturdy, long-lasting foundation for your outdoor space.

Looking for an alternative?

For 4m structural joists see our 4m structural composite 100x50mm joist

For aluminium joists see our 4m aluminium decking joist 50mm x 50mm

Or browse our decking frame department for timber joists and more…

*Cladco composite products are available as FSC® certified at no additional cost. If you require FSC® certified products, please specify this when placing your order.

Please note that these 30mm x 50mm composite joists are non-structural and must be supported along their full length during any decking or cladding installation to ensure stability and performance.

Images shown are for illustration purposes only. Actual items and measurements may vary slightly.

Delivery
Information

Please click on the variable options on our checkout page.

Cladco offer a Nationwide delivery service (UK Mainland) We offer a range of options, please see the table below.

Useful Links: Delivery Policy | Collection Policy

Delivery

Delivery is estimated 5 working days (1 week).


Collection

Collection from our Okehampton or Andover warehouse. Please note we need 2 hour notice.


Sample Packs

Sample packs are sent via Courier and delivered within 3-5 working days.

Pricing Table

TYPE WHEN? HOW MUCH?
 
National Delivery (Orders under £1,000) Estimated 5 working days* £192.00
(Orders over £1,000) Estimated 5 working days* £96.00
(Orders over £1,500) Estimated 5 working days* FREE
Scotland Delivery Postcodes: PA, PH, DD, AB, IV, & KW Estimated 15 working days* £360.00
 
Millboard Delivery (Orders under £2,000) Estimated 5 working days* £192.00
(Orders over £2,000) Estimated 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 5 Working Days FREE
*Please allow for public holidays and weekends (non-delivery days)

When your goods are delivered these are sometimes delivered on a pallet with the necessary associated packaging to ensure they arrive with you in the best possible condition. We view the pallet and packaging as necessary for the protection of the goods and therefore will be a part of what is delivered to you. It is your responsibility to dispose of these items in a responsible manner when appropriate.

Features Video
Frequently Asked Questions
How do I use the Cladco Composite Joists/Battens in Cladding projects?

They should be used as Joists for Composite Decking to provide a weather-resistant base. The Joists should be spaced no more than 400mm apart and used alongside a hard concrete base to ensure a sturdy structure.

How many Joists do I need for my project?

Generally, you should purchase one Joist for every square metre of Decking.

Are the 30x50mm Composite Joists structural?

No, these Composite Joists are not structural and will need to be supported along their entire length on any Decking or Cladding installation.

Why is it important to double joist and use two clips at adjoining boards?

When our Signature composite decking boards expand and contract, they must be securely fastened to minimise movement. A single joist may not provide sufficient surface area for the ends of two boards to be properly anchored. Using double joists at adjoining points ensures each board end is attached to a joist, increasing the stability of your project. Adjoining boards should never share the same clip, and should be secured using two clips per board end.

 

This method will improve the structural integrity of your decking; especially in high-stress areas like the ends, where foot traffic, weathering and material contraction or expansion increase the strain on your decking.

 

Adhering to these guidelines will help ensure proper installation and longevity of your Composite Decking. Failure to follow these guidelines will invalidate the product warranty.

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