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Nexxa Panel System

The Warmup Nexxa Panel System enables the most precise installation of underfloor heating within a floating screeded floor.

nexxa panel hydronic underfloor heating
Hydronic icon

Floor Type

icon-checkmark Ceramic, Stone, Wood / Laminate, Vinyl, Carpet

Room Type

icon-checkmark  Small & Large Areas

icon-checkmark  Regular & Irregular Shape

Build Type

icon-checkmark  New Build

icon-checkmark  Refurb

Subfloor Type

icon-checkmark  Screed & Concrete Floors

The Nexxa Panel System is used primarily where there are floor build-up issues to deal with. It can substantially reduce the overall build-up of the floor structure. System plates are formed of interlocking vacuum formed sheets of plastic, incorporating pipe-locating castles.

Sheets are laid over the subfloor and are thermally insulated in accordance with Building Regulations. The edges are overlapped by 75mm interlocking them to form a continuous layer. The castellated board can be insulated or supplied purely as a way to install the pipework.

red pipes hydronic underfloor heating

The system holds the pipework in place until the screed is applied. UltraTile from Instarmac provides one of the best screeds on the market for this purpose. Nexxa Panel System is a suitable system for almost any floor finish and in particular where the flooring (wood, carpet or vinyl) may be replaced from time to time.

Key Benefits


Offers a choice of insulated or un-insulated panel

Insulated is designed for refurbishments with low build-up of floors and un-insulated is suitable for all types of insulation, particularly where pre-existing floors are in place.


Secure pipework before screeding

Interlocking the pipe, no clips are used in the installation and the system is laid as per the approved design.


Self-retaining system, no clips required

Holds the pipe at the correct level prior to screeding to ensure there are no hot spots.

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:


warmup underfloor pipes

Warmup systems come with a choice of 3 pipe types; PEX-A, PE-RT and PE-RT/AL/PE-RT. This choice guarantees that you have the best possible system, tailored to your specific installation and budget.

View Pipes


warmup manifold

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

View Manifold

Control Center

control center for hydronic systems

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

View Control Center


thermostat page

Choosing the correct control system is crucial in ensuring that your heating system works in the best possible way, efficiently and easily.

View Thermostats