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Nexxa System

The Warmup Nexxa System features a range of castellated panel options for a customisable installation of water underfloor heating within floating screeded floors.

Key Benefits


3 panel types

Innovative castellated panels available for different installation needs


Secures pipework before screeding

Holds the heating pipe at the correct level prior to screeding with no clips required


Energy-efficient technology

Low running costs and compatible with heat pumps and traditional heat sources

contemporary lounge with staircase

Castellated Panel System for Screeded Floating Floors

Due to its low-profile design, the Nexxa System is an ideal system for floating screeded floors in both new-build and refurbishment projects. It uses unique castellation panels in which to securely locate and hold the floor heating pipes in place and its innovative panels require less screeding than other systems – meaning it can reduce the structural load on the building and result in cost savings in screed materials.

The Nexxa System can be personalised for your project’s requirements through its three panel options: the Nexxa System for pre-insulated floors, the Nexxa Peel and Stick System featuring a self-adhesive backing and the Nexxa Insulating and Acoustic System which features in-built insulation. The Nexxa System can dramatically improve your home’s energy performance and can be used with both heat pumps and traditional heat sources. It can be installed with almost any floor finish, in particular where the flooring may be replaced from time to time.


Nexxa System for Pre-Insulated Floating Floors

The Nexxa System is an ideal water underfloor heating system for use in projects with pre-insulated floating screeded floors. With a slimline design of just 32mm, it is a great choice for home refurbishment projects. The Nexxa System offers faster heat up times through its 11mm EPS backing and heat outputs can be increased and water temperatures reduced, by using thinner, more conductive screeds.

Nexxa Peel & Stick

Nexxa Peel and Stick System for Fast Installation

With a build height of just 21mm, the Nexxa Peel and Stick allows for a thinner floor build-up and provides a more stable base, with no lifting and buckling when fitting the heating pipe. Its castellated panels feature a self-adhesive backing which provides quick installation times, with no waiting for the adhesive to dry before laying the heating pipe. Its innovative design also allows more sheets per box, making transportation and installation more efficient.


Nexxa Insulating and Acoustic System for Larger Projects

The Nexxa Insulating and Acoustic System features a system depth of 51mm which included 30mm of built-in thermal and acoustic insulation, making it the perfect all-in-one water underfloor heating solution for larger projects. Its thermal insulation performance meets the requirements of separating floors defined within EN 1264 and ISO 11855 and it will provide 28dB (ΔL W,R) reduction to impact sound – making it especially popular for use in multi-residential buildings where reducing sound transmission between units is of paramount importance.

Nexxa Installation

The Low-Build VLo Nexxa-12 Castellated System for Refurbishment Projects

Alongside the flexible options offered by the Nexxa System, the VLo Nexxa-12 Castellated System is available for installation in refurbishment projects where a lower floor build-up is required. Allowing rapid installation times, the Nexxa-12 is a modular system which utilises a 12mm heating pipe and bonds directly to a smoothed and primed subfloor.

Guarantee and Warranty


Safety Net Installation Guarantee

If you accidentally damage the underfloor heating pipe during installation, return it to Warmup and we will replace it with the same size and make of pipe for free.

Lifetime Limited Warranty

The length of the warranty period depends on the type of pipe you choose. When you install this system with the Warmup PEX-a pipe, the pipe comes with a Limited Lifetime Warranty.

Installing this product? You will also need:

hydronic underfloor heating pexa


Select from a choice of 3 pipe types; PEX-A, PE-RT and PE-RT/AL/PE-RT – tailored to your specific installation and budget.

hydronic underfloor heating manifold


The Warmup 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.

4ie smart thermostat main controls


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
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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
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For areas of 24m2 or more, use our full quoting system
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