Triton
Triton Black WPC Subframe Joist 30mm x 40mm x 5m
Triton Black WPC Subframe Joist 30mm x 40mm x 5m
SKU:WPCDF50-SUB
Est Delivery between 6th Feb and
12th Feb.

Add £400£480 to your overall order to unlock FREE delivery.
How much will I need?
We recommend adding 10% of additional product to the calculation to account for errors, damages, and obstacles in your project
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- Shipping protection for peace of mind
- Fast processing and delivery
- Flexible delivery options


Product Information
Measuring 30mm in width and 40mm in thickness, the Triton Black WPC Subframe Joist is engineered for strength and stability. Its composite construction combines the best of wood and plastic, offering superior resistance to weathering, rot, and insect damage. This makes it an excellent choice for outdoor environments, where it will withstand the elements without compromising on structural integrity. Despite its robust build, the joist remains lightweight at just 5.10kg, facilitating easy handling and installation.
Backed by a 10-year warranty, the Triton Black WPC Subframe Joist assures peace of mind and confidence in its longevity. Whether you're constructing a new deck or renovating an existing one, this joist provides the reliable support you need. Its thoughtful design and high-quality materials ensure that your decking project will remain beautiful and functional for years to come. Choose Triton Decking for a product that combines innovation, quality, and style.
Key Features
- Brand: Triton Decking
- Length: 5 metres
- Width: 30mm
- Thickness: 40mm
- Weight: 5.10kg
- Colour: Black
- Material: Wood-Plastic Composite (WPC)
- Warranty: 10 Years
Pros & Cons
Pros
- Durable construction with a wood-plastic composite that resists weathering, rot, and insect damage.
- Sleek black color adds modern elegance and blends seamlessly with various design aesthetics.
- Lightweight at 5.10kg, making it easy to handle and install.
- Backed by a 10-year warranty, providing peace of mind and confidence in its longevity.
- 5-metre length offers ample coverage for both residential and commercial applications.
- Limited color option may not suit all design preferences.
- Composite material, while durable, may not appeal to those seeking a traditional wood appearance.
- Specific dimensions (30mm width and 40mm thickness) may not be compatible with all decking systems.
Frequently Asked Questions
The Triton Black WPC Subframe Joist has a length of 5 metres, providing ample coverage for various decking projects.
The joist measures 30mm in width and 40mm in thickness, offering strength and stability for your decking foundation.
It is crafted from a Wood-Plastic Composite (WPC), combining the best of wood and plastic for enhanced durability and resistance to weathering, rot, and insect damage.
The joist weighs 5.10kg, making it lightweight for easy handling and installation.
The joist comes in a sleek black colour, adding a touch of modern elegance to any decking project.
The joist is backed by a 10-year warranty, providing peace of mind and confidence in its longevity.
Yes, its composite construction offers superior resistance to weathering, rot, and insect damage, making it an excellent choice for outdoor environments.
Yes, its robust design and ample length make it ideal for both residential and commercial decking projects.
Technical Specifications
Color | Black |
Datasheets
Delivery Information
Est Delivery between 6th Feb and
12th Feb.


Delivery will always take place on a weekday (Mon - Fri excl. public holidays).
An exact delivery charge will be calculated at checkout based on your order and location.
Frequently asked questions
How do I track my order?
As soon as your order is dispatched, you'll receive a dispatch email with delivery dates and details for your order.
If you require an update on your order, you can email customerservice@i4lgroup.co.uk with your order number for assistance.
Can I order now and pay later?
Yes, we offer a variety of flexible payment options to all our customers.
When checking out online, you'll be able to avail of multiple buy now, pay later options with Klarna or PayPal.
The flexible payment options available to you at checkout will be based on the total value of your order.
For B2B customers, you can apply for a 30-day trade credit account, and you'll also unlock:
- Dedicated trade pricing
- Loyalty points and rewards
- A dedicated account manager
Do you really have the best prices online?
Yes! We even have a price match guarantee.
We are so confident that we have the best prices out there that we will match the price of any other online or local retailer.
If you find the same product cheaper elsewhere, we will match the price — just send us the quote or website link.
Read more: Price Match Guarantee
I have a large-scale project, can I get a quote?
Yes, if you are carrying out a construction project that requires a large quantity of materials, email sales@i4lgroup.co.uk with the following information and we will get back to you with your very own bespoke price quote:
- Delivery postcode and address
- Mobile number
- Company name
- A list of required materials and their quantities
Learn more on opening a trade account.
Can I open a trade account?
Yes! Trade customers can open a B2B account to unlock bespoke pricing, B2B discounts, trade credit, loyalty points, and a dedicated personal account manager.
You can learn more here: Open a Trade Account
Can I cancel or amend my order after placing it?
Yes, if your order has not yet been processed for dispatch, cancellation/ amendments should be possible.
Our team works quickly to get your order delivered as soon as possible so it is likely that your order will be processed for dispatch within 2-3 hours of purchase.
Contact us immediately via customerservice@i4lgroup.co.uk or call 020-3481-1978 during opening hours.
If you wish to amend your order after it has been processed by our team, it will be treated as a return or a separate new order.
Read more: Returns
What is your returns policy?
Changed your mind about your order? no problem! we offer a 14 day returns period after your order is delivered.
To avail of this your order must be unused, in its original packaging, and suitable for resale.
Refunds are issued immediately after the goods are received and inspected by our team.
If an item arrives damaged or incorrect, you must notify us within 48 hours of delivery.
Prior approval is needed before returning any goods – do not return without authorization.
Special order items are exempt from returns.
Read more: Returns
Why Choose Us?
Factors |
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Other Stores |
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Customer service | Easy to reach, and eager to help | Difficult to contact |
Shipping speed | Fast and organised | Unpredictable |
Competitive pricing | Price match guarantee | What you see is what you get |
Loyalty program | Points + exclusive deals | Basic discounts |
Expert advice | Free 1-on-1 sessions | Self-service only |
Trade accounts | Bespoke pricing, trade credit, and dedicated account manager | none available |