Composite Cladding Joist

£20.00 inc. VAT

£16.67 ex. VAT

59mm x 40mm x 3600mm lightweight profile for easy handling.
Designed for strong, low-maintenance cladding subframes.
Durable wood-polymer composite construction.
Promotes airflow behind cladding panels.
Made with FSC® 100% certified wood fibres.
25-year residential warranty.

Quantity:

£20.00

Description

Opt for the NeoTimber® Composite Joist when you need a dependable, low-maintenance subframe solution for your cladding installation. Manufactured from the same premium wood-polymer composite as our composite cladding boards, this joist is engineered for strength, stability, and long service life.

Measuring 59mm x 40mm x 3600mm and weighing 5.54kg per length, it’s lightweight enough for easy handling yet strong enough to form a reliable support structure. The composite construction is resistant to rot, warping, and splitting, meaning less upkeep over time.

Installed behind cladding panels, the joist helps create a ventilated cavity, encouraging airflow to reduce moisture build-up and extend the lifespan of your cladding system. Its charcoal finish works well with contemporary exteriors, providing a discreet, professional look.

Sustainability is at the core of our composite manufacturing process. The wood content in our Composite Cladding Joist is FSC® 100% certified, ensuring it comes from responsibly managed forests. In addition, we incorporate recycled plastics into production, helping to minimise environmental impact.

The NeoTimber® Composite Cladding Joist is available in convenient 3.6m lengths, simply measure your framework requirements and use our calculator to determine how many joists you’ll need. With NeoTimber®, you get a subframe solution that combines strength, function, and style in one.

Specifications

Dimensions & Weight:

Profile Size: 59mm x 40mm x 3600mm
Weight (per metre): 1.54kg
Weight (per 3.6m length): 5.54kg

Material Properties:

Material Type: wood polymer composite
Material Composition: 60% wood powder (FSC® 100% certified), 30% HDPE, 10% chemical additives
Colour: charcoal

Warranty:

25-year limited warranty for residential applications
10-year limited warranty for commercial applications

Certifications:

FSC® 100% Certified
CE
ISO 9001, 14001 & 45001
REACH
Intertek Green Leaf Mark
WWF LCMP Silver

Downloads

NeoTimber® Classic Composite Cladding - Technical Specifications
NeoTimber® Deluxe Composite Cladding - Technical Specifications
NeoTimber® Slatted Composite Cladding - Technical Specifications
NeoTimber® Composite Cladding - Installation Instructions

Delivery

NeoTimber® has three delivery services for you to choose from: Next Working Day (order before 11am), Express (3-5 working days), or Economy (7-10 working days).

Please note that Next Working Day and Express delivery are available to UK mainland destinations only.

After your order has been picked, our logistics team will contact you with a proposed delivery date and time, and to discuss any special requirements you may have. We will also call you on the day of your delivery to confirm everything. For more information please refer to the NeoTimber® Delivery Policy.

FAQs

Get quick answers to the most common questions.

What is the NeoTimber® Composite Joist used for?

It’s designed as a strong, low-maintenance subframe for cladding installations, providing dependable support while creating a ventilated cavity behind panels. This helps improve airflow, reduce moisture build-up, and enhance the overall performance and lifespan of the cladding system.

What are the dimensions of the Composite Cladding Joist?

Each joist measures 59mm x 40mm x 3600mm and weighs 5.54kg per length, offering a balance of strength and manageable weight for easier handling and installation.

Is the Composite Joist suitable for all weather conditions?

Yes, it is designed to resist rot, warping, and splitting, ensuring reliable, long-term performance in all weather conditions. This durability helps minimise maintenance while maintaining structural integrity over time.

What material is this joist made from?

It’s made from a blend of 60% FSC® 100% certified wood fibres, 30% recycled HDPE, and 10% performance additives. This combination delivers excellent strength and durability while supporting a more sustainable, eco-friendly construction solution.

Is the NeoTimber® Cladding Joist covered by a warranty?

Yes, it comes with a 25-year residential and 10-year commercial warranty, providing long-term assurance and peace of mind for your installation.

How sustainable are NeoTimber® composite products?

Our composite products are developed to minimise environmental impact by using a blend of recycled plastics and responsibly sourced wood fibres, reducing the need for new raw materials. The wood content is FSC® 100% certified, ensuring it comes from well-managed forests. Compared to traditional timber, composite materials require very little maintenance and have a longer lifespan, helping to cut down on ongoing resource use and replacement over time.