Composite Decking Joist

£20.00 inc. VAT

£16.67 ex. VAT

59mm x 40mm x 3600mm hollow profile for lightweight strength.
Decking subframe solution for solid bases and concrete.
Durable wood-polymer composite construction.
Supports ventilation and drainage beneath decking.
Made with FSC® 100% certified wood fibres.
25-year residential warranty for peace of mind.

Quantity:

£20.00

Description

The Composite Decking Joist is a reliable, long-lasting solution for your decking project. Designed from the same high-performance wood polymer composite as NeoTimber® decking, it delivers strength, stability, and reduced maintenance. The composite material resists rot, warping, and splitting, reducing maintenance over time. Its robust construction ensures a dependable foundation while offering peace of mind for years to come.

Perfect for installations on solid ground or concrete, the NeoTimber® Composite Decking Joist provides exceptional support and promotes proper drainage. Its lightweight design makes handling and installation straightforward, saving both time and effort. Each 3.6m length measures 59mm x 40mm and weighs only 5.54kg, making it practical and efficient to work with.

Sustainability is central to our composite manufacturing approach. The wood fibres used in our Composite Decking Joist are FSC® 100% certified, ensuring they are sourced from responsibly managed forests. In addition, we incorporate recycled plastics into our products, helping to lower environmental impact.

Order in convenient 3.6m lengths and use our calculator to determine your project requirements. Choose NeoTimber® for dependable strength and consistent performance across every installation.

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 Decking - Technical Specifications
NeoTimber® Deluxe Composite Decking - Technical Specifications
NeoTimber® Composite Decking - 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 materials are used in the NeoTimber® Composite Decking Joist?

The joist is made from a high-performance wood-polymer composite, consisting of 60% FSC® 100% certified wood fibres, 30% HDPE, and 10% performance additives. This advanced blend delivers excellent strength and stability while reducing maintenance requirements over time.

Where is the Composite Decking Joist suitable for use?

It is designed as a reliable decking subframe solution for installations on solid ground or concrete bases. By creating a stable support structure and allowing airflow beneath the deck, it helps improve ventilation, reduce moisture build-up, and extend the overall lifespan of your decking system.

What are the joist’s dimensions and weight?

Each joist comes in a 3.6m length with dimensions of 59mm x 40mm and a weight of just 5.54kg. Its lightweight design makes it easy to handle, transport, and position during installation.

How does the joist enhance decking performance?

The joist creates a strong, long-lasting foundation that supports effective drainage beneath the deck. By allowing water to flow away and reducing moisture build-up, it helps improve overall performance and contributes to a healthier, longer-lasting outdoor space.

Is the NeoTimber® Joist backed by a warranty?

Yes, the joist is supported by a 25-year residential warranty and a 10-year commercial warranty, offering reliable long-term performance and added peace of mind for any installation.

What makes NeoTimber® composite products an eco-friendly choice?

NeoTimber® composite products are developed to offer a more sustainable alternative to traditional materials. By using a mix of recycled plastics and responsibly sourced wood fibres, they help minimise waste and reduce dependence on new resources. The wood content is FSC® 100% certified, ensuring it comes from well-managed forests. In addition, their durability and low-maintenance nature mean they last longer without the need for regular treatments, helping to reduce overall material consumption over time.