water underfloor heating background blurred
Warmup PE-RT pipe

PE-RT Pipe

Warmup PE-RT (Polyethylene of Raised Temperature Resistance) pipe is extremely flexible with excellent long-term stress resistant properties combined with long-term strength at elevated temperatures. Warmup PE-RT is available in both 16mm and 12mm diameters.

Key benefits


Oxygen barrier

The inner layer of PE-RT prevents oxygen entering the system via the pipework.


Easy to lay

APE-RT can hold and maintain its shape, when formed by hand.


Corrosion free

The coatings stop oxygen from entering via the pipework minimising the risk of corrosion to the system.


Cost-Competitive Pipes

The pipe guarantees leak free performance with a smooth internal structure for improved flow, reduced pressure loss and deposit formation. Warmup PE-RT pipe is ideal for underfloor heating systems as well as being suitable for hot and cold water sanitary and distribution systems and various heating systems for domestic, commercial & industrial applications.

Warmup PE-RT pipe incorporates an EVOH oxygen diffusion barrier layer sandwiched within the wall of the pipe, protecting the EVOH layer from physical damage. The EVOH layer which complies with DIN 4726 renders the pipe virtually impervious to oxygen and other gases. PE-RT pipes retain flexibility at freezing temperatures and therefore do not break in sub-zero conditions. Pipes are produced and tested according under an ISO 9001 quality management system to four standards, namely DIN 16833, DIN 4726, ISO 22391 and ISO 10508.



Lifetime Warranty

Technical Information

Product Documentation
Technical Specifications
16mm diameter 12mm diameter
Pipe Range nominal dimensions 16mm OD x 12mm ID x 2.0mm wall thickness 12mm OD x 8mm ID x 2.0mm wall thickness
Colour White White
Coil sizes 25m, 50-120m (10m increments) 50, 60, 70m
Operating Temperature Peak 80°C 80°C
Maximum Operating pressure 10.7 bar at 70°C 10.7 bar at 70°C
Construction 5 layer: PE-RT – adhesive – EVOH – adhesive – PE-RT PE-RT – adhesive – EVOH – adhesive – PE-RT
Manufacturing EN ISO 21003 (application class 4) EN ISO 21003 (application class 4)
Quality Assurance ISO 9001 ISO 9001


Mechanical Properties
Composition Inner pipe PE-RT
Pipe roughness 0.007 mm/m
Bending radius 5 x outside diameter minimum
Water capacity 16mm – 0.113 l/m

Thermal Properties
Thermal conductivity  0.45 W/m K
Thermal expansion coefficient 0.026 mm/m K

Installing this product? You will also need:

hydronic underfloor heating manifold


Our Manifold is manufactured from stainless steel and provides water regulation for up to 12 underfloor heating circuits.

hydronic underfloor heating control centre

Control Center

All hydronic systems require a control centre that works with the thermostats and heat source, such as a boiler or heat pump.

floor heating controls 6ie


Choosing the correct control system is crucial in ensuring that your heating system works in the most efficient way.

Get A Quote

Get a Free Quote and Order Online Today

Use our online quoting tool to find the best hydro underfloor heating system for your project and purchase it directly from Warmup.

Quoting Tools: instant, accurate, flexible

Warmup offers an extensive range of electric and water floor systems compatible with all floor types, rooms and projects.

Electric Systems

  • ✓ Ideal for zones less than 25m²
  • ✓ Ideal for single rooms
  • ✓ Does not alter floor levels
  • ✓ Great for renovations

Electric Systems Quote
Thumbnail [200x250]


Water Systems

  • ✓ Ideal for larger zones over 25m²
  • ✓ Rapid auto heat loss calculations
  • ✓ Compatible with existing central heating systems
  • ✓ Great for new-builds

Water Systems Quote & Buy
Thumbnail [200x250]


Projects Division Consultation

  • ✓ Bespoke heating solutions for new-build projects and larger renovations
  • ✓ Dedicated team to work with you
  • ✓ World-class expertise in R&D, building regulations and energy performance
  • ✓ Detailed system layouts for each stage of the project

Get In Touch with Warmup’s Projects Division
Thumbnail [200x250]
For areas of 24m2 or more, use our full quoting system
Scroll to Top