Multilayer Underfloor Heating Pipe

Multilayer Underfloor Heating Pipe

Shop multilayer underfloor heating pipe, PEX-AL-PEX pipe, PERT-AL-PERT pipe and PE-RT EVOH barrier pipe at ThermRite Shop. Our pipe range is designed for water underfloor heating systems, offering reliable flow performance, oxygen barrier protection and flexible installation options for domestic and trade projects.

This collection includes 12mm and 16mm UFH pipe for standard underfloor heating circuits, larger 20mm, 25mm and 32mm multilayer pipe for heating and plumbing applications, plus useful pipe installation tools such as pipe decoilers and reaming tools. Choose from high-quality 3-layer and 5-layer pipe options for new installations, extensions and replacement work.

Which Underfloor Heating Pipe Should I Choose?

Use the table below to compare the pipe and installation tools available in this collection.

Product Best For Key Features Shop
12mm PERT-AL-PERT Underfloor Heating Pipe Low-profile underfloor heating systems, overlay boards and smaller circuit layouts. 80 metre barrier pipe coil suitable for compact UFH installations. View product
16mm PEX-AL-PEX Underfloor Heating Pipe Standard water underfloor heating pipe circuits for domestic and trade installations. WRAS approved 5-layer composite pipe with a 50-year guarantee. View product
ThermRite 16mm PERT-AL-PERT Pipe Flexible 16mm UFH pipe installations requiring a 5-layer composite pipe. 5-layer composite UFH pipe with a 50-year guarantee. View product
20mm, 25mm & 32mm PEX-AL-PEX Pipe Larger heating, plumbing and distribution pipework applications. WRAS-approved 5-layer multilayer pipe available in larger diameters. View product
12mm PE-RT EVOH Underfloor Heating Pipe Low-profile UFH systems where a flexible oxygen barrier pipe is required. 3-layer PE-RT EVOH barrier pipe for water underfloor heating systems. View product
16mm PE-RT EVOH Pipe Flexible 16mm water underfloor heating circuits requiring oxygen barrier protection. 3-layer underfloor heating pipe with EVOH oxygen barrier. View product
Professional Pipe Decoiler Faster, neater pipe installation from UFH pipe coils. Installation tool to help unwind pipe smoothly and reduce twisting during fitting. View product
Pipe Reaming Tool for PEX & PERT Pipe Preparing pipe ends before fitting connectors. Deburring and chamfering tool for clean pipe preparation. View product

Key Features of Our UFH Pipe

Designed for Water Underfloor Heating UFH pipe carries warm water through each floor heating circuit, helping provide even heat output across the room.
Multiple Pipe Sizes Choose from 12mm, 16mm, 20mm, 25mm and 32mm pipe options depending on your system design and installation requirements.
Oxygen Barrier Protection Barrier pipe helps reduce oxygen ingress into the heating system, supporting long-term performance and component protection.
PEX-AL-PEX, PERT-AL-PERT & PE-RT EVOH Options Select from multilayer composite pipe and flexible EVOH barrier pipe to suit different installation types.
WRAS Approved Options Selected PEX-AL-PEX pipe options are WRAS approved for high-spec heating and plumbing applications.
Trade & Domestic Use Suitable for installers, contractors and homeowners working on water underfloor heating projects.

PEX-AL-PEX, PERT-AL-PERT and PE-RT EVOH Pipe Explained

Different underfloor heating pipe types suit different installation methods. PEX-AL-PEX and PERT-AL-PERT are multilayer composite pipes that include an aluminium layer for stability and shape retention. PE-RT EVOH pipe uses an oxygen barrier layer and is commonly chosen where a flexible underfloor heating pipe is required.

Pipe Type What It Is Best For
PEX-AL-PEX Pipe A 5-layer composite pipe with an aluminium core for strength and shape stability. High-spec UFH, heating and plumbing pipework applications.
PERT-AL-PERT Pipe A multilayer composite pipe designed for flexible water underfloor heating installations. Standard UFH circuits, low-profile systems and overlay board installations.
PE-RT EVOH Pipe A flexible underfloor heating pipe with an EVOH oxygen barrier layer. Water UFH circuits where flexible oxygen barrier pipe is preferred.

Best Uses for Underfloor Heating Pipe

Overlay Board Systems 12mm pipe is commonly used in low-profile overlay board systems where floor build-up needs to be kept low.
Standard UFH Manifold Circuits 16mm pipe is widely used for water underfloor heating circuits connected to manifolds.
Heating & Plumbing Distribution Larger 20mm, 25mm and 32mm multilayer pipe options are suitable for bigger distribution pipework requirements.
Professional Installation Pipe decoilers and reaming tools help installers achieve faster, cleaner and more reliable pipe fitting.

Frequently Asked Questions

What pipe is used for water underfloor heating? Water underfloor heating commonly uses 12mm or 16mm oxygen barrier pipe, including PEX-AL-PEX, PERT-AL-PERT and PE-RT EVOH pipe depending on the system design.
Is 12mm or 16mm pipe better for underfloor heating? 12mm pipe is often used for low-profile overlay systems, while 16mm pipe is commonly used for standard manifold-based UFH circuits. The best choice depends on your floor build-up, circuit length and system design.
What does oxygen barrier pipe mean? Oxygen barrier pipe helps reduce oxygen entering the heating water through the pipe wall. This helps protect pumps, manifolds and other heating components from corrosion risk.
What is PEX-AL-PEX pipe? PEX-AL-PEX is a multilayer composite pipe with an aluminium layer between plastic layers. It offers strength, stability and shape retention for heating and plumbing applications.
Do I need a pipe decoiler? A pipe decoiler is useful for professional installations because it helps unwind pipe coils smoothly, reduces twisting and makes laying pipe faster and neater.