Skip to content
🔥 Our best-ever prices across site!
Underfloor Heating At Unbeatable Prices
Fast & Reliable Delivery
We'll Beat Any Price
Long-Lasting Warranty

Pex-Al-Pex 12mm Barrier Pipe

From £59.99
Now £59.99
in stock, ready to be shipped
In stock, ready to be shipped
Pex-Al-Pex 12mm Barrier Pipe
From £4.49
Now £4.49
Need expert advice?

Need advice or a better price?

Call our expert team 01268 567016

Get next day delivery

For delivery on Friday

Order within hours minutes seconds

The Pex-Al-Pex 12mm Barrier Pipe is the ultimate choice for a wide range of demanding applications. This European standard pipe sets the benchmark for performance and reliability in the international market, designed with innovation and versatility in mind.

Quality is our top priority, and we spare no expense in ensuring the highest standards. The Pex-Al-Pex pipe is meticulously crafted using only the finest quality materials. With its 12mm (outside) diameter, it offers optimal performance while adhering to European standards, guaranteeing superior quality and durability.

Featuring a triple-layered construction, this pipe incorporates a 100% tight oxygen barrier. This ensures the integrity of the system and prevents the ingress of oxygen, safeguarding against corrosion and extending the lifespan of the pipe. The carefully calculated diameter of the pipe allows for maximum performance and flexibility, making it suitable for various applications.

The middle aluminium layer of the Pex-Al-Pex pipe plays a crucial role in heat diffusion, enhancing overall efficiency. This layer allows for excellent conductivity, making it ideal for low-temperature systems. With its superior heat distribution capabilities, this pipe minimizes the need for additional pipework, reducing installation complexity and costs.

At Underfloor Heating Direct, we offer a comprehensive range of high-quality products, with our range leading the way. We understand the importance of a durable and long-lasting pipe system in underfloor heating applications. We prioritize quality and durability in all our products to avoid costly and unnecessary replacements.

For your peace of mind, all our Pex-Al-Pex pipes come with an exceptional 50-year guarantee, surpassing any other manufacturer on the market. This guarantee reflects our commitment to providing you with a reliable and long-lasting solution for your underfloor heating system.

Our reviews speak for themselves!

We're here to help

Our product experts are here to assist with any enquiry you might have.

Our customer support is available Monday to Friday 7am-6pm.

Call us on 0800 141 2643

Reach out to our expert team
Free delivery on all orders*

At Underfloor Heating Direct, we strive to make every step of your order as easy and convenient as possible, from finding the right underfloor heating setup to best suit you to taking delivery of your system the very next day.

We're proud to offer a range of delivery options to suit you, including free delivery on all orders over £100 or next working day delivery for a fixed price of £5.99.

  • 2-3 working days delivery, order over £100 - FREE (£5.99 if under £100)
  • Next working day - £9.99 (Order before 4pm Monday - Friday)
  • Next working day before 12 noon - £19.99 (Order before 4pm Monday - Friday)
  • Saturday delivery - £29.99 (Order before 4pm Friday)

Explore delivery information

30 days returns policy

At Underfloor Heating Direct, our customers have 30 days to upgrade, replace or refund their orders.


At Underfloor Heating Direct, we want to ensure you are happy with every purchase you make. If you have any issues with your chosen product, whether damaged, faulty or simply an unwanted item, you can simply return what you bought for a refund.


We take great care in the delivery of all of our products, however, in the event of your delivery arriving damaged or if you notice a manufacturing fault of any kind within 48 hours of delivery, you're within your rights to a replacement.


Within 14 days of purchasing from us, you are eligible to upgrade if you deem you want something a little better. Simply send it back to us brand new and we'll happily assist you with an upgrade to your order.

Find out more

Long-lasting warranty

At Underfloor Heating Direct, we are committed to providing our customers with high-quality products and outstanding customer service. That's why we offer a comprehensive warranty on all of our underfloor heating products, with a 10 year warranty for our electric underfloor heating kits.

Our warranties are designed to give you peace of mind and ensure that your underfloor heating system operates reliably for years to come.

Find out more

Compare products

{"one"=>"Select 2 or 3 items to compare", "other"=>"{{ count }} of 3 items selected"}

Select first item to compare

Select second item to compare

Select third item to compare