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Underfloor heating

RCB Plumbing Ltd provides expert underfloor heating installation, maintenance, and repair services across South London and Surrey. Our skilled engineers design systems that deliver consistent, comfortable warmth while maximising energy efficiency.

Underfloor heating installation across South London and Surrey

Underfloor heating is becoming an increasingly popular choice for homeowners looking for a more comfortable and efficient way to heat their property. At RCB Plumbing Ltd, we install underfloor heating systems across South London and Surrey, including Sutton, Carshalton, Epsom and surrounding areas. Whether you're renovating, extending or upgrading your heating system, underfloor heating offers consistent warmth without the need for traditional radiators.

We design systems to suit the property, ensuring the heating output, pipe layout and controls all work together properly. A well-designed underfloor heating system should provide even heat distribution across the room, improved comfort, and reliable day-to-day performance.

Energy Efficiency

Underfloor heating typically operates at lower temperatures than radiators, using less energy while maintaining comfortable warmth throughout your home.

Invisible Heating

With no visible radiators, underfloor heating gives you complete design freedom and more usable wall space in every room.

Qualified & experienced

Cold spots in your floor?

Contact RCB Plumbing to get your underfloor heating checked properly.

Wet underfloor heating systems

Water-based underfloor heating systems are commonly installed in ground floors, extensions and full property refurbishments. These systems use warm water circulating through pipes beneath the floor, connected to your boiler or heat pump.

Wet systems are often chosen for:

Ground floor renovations
Kitchen and living space extensions
Open plan layouts
New build properties
Homes upgrading to heat pumps

Electric underfloor heating systems

Electric underfloor heating is often used in smaller areas or where floor height is limited. These systems use electric heating mats or cables installed beneath tiles, laminate or other floor finishes.

Electric systems are commonly installed in:

Bathrooms
En-suites
Kitchens
Single rooms
Loft conversions

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Planning a renovation or extension?

Book your underfloor heating survey with RCB Plumbing.

Benefits of underfloor heating

Underfloor heating offers a more comfortable and efficient way to heat your home, with benefits that go beyond just warmth.

Even heat distribution – Heat is spread more evenly across the room, helping to avoid cold spots and overheated areas.
Space saving – With no radiators on the walls, you have more freedom when planning furniture and room layouts.
Improved energy efficiency – Underfloor heating often runs at lower temperatures than radiators while still keeping the room comfortable.
Better comfort underfoot – Warm floors make kitchens, bathrooms and living spaces feel more comfortable day to day.
Less dust circulation – Because the heat rises gently from the floor, there is often less air movement than with traditional radiators.
Cleaner room design – The system stays hidden beneath the floor, giving you a neater and less cluttered finish.
Works well with modern heating systems – Underfloor heating can pair especially well with low-temperature systems such as heat pumps.

In short, underfloor heating gives you steady warmth, more usable space and a cleaner-looking room.

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Underfloor heating repairs

If your underfloor heating isn’t performing properly, we can diagnose and repair the issue. Problems can range from uneven

heat and cold spots to thermostat faults or circulation issues. Common underfloor heating faults we repair include:

Cold areas in the floor : Uneven heating can be caused by air in the system, flow issues, or balancing problems. We identify the cause and restore proper heat distribution.

System not heating up properly : This may be related to controls, pump issues, mixing valves or system pressure. We check the full setup rather than just one component.

Thermostat or control faults : If the system isn’t responding correctly, the issue may be with the thermostat, wiring or zone controls.

Leaks in wet underfloor systems : Although rare, leaks can occur. We carry out careful diagnostics to locate the issue and recommend the correct repair.

Our trusted process

Installing underfloor heating should feel straightforward from the first enquiry to the final handover. Our process is built to keep things clear, practical and tailored to your property.

1. Get in touch

Contact us to talk through your project, whether it is a renovation, extension, upgrade or repair. We will take a few details about your property and what you need from the system.

2. Property survey and advice

We assess the space, floor build-up, heating setup and the type of underfloor heating that best suits the job. This helps us recommend the right solution, whether that is a wet system, electric system or changes to the wider heating setup.

3. Clear quote and plan

Once we have surveyed the property, we provide a clear quote and explain the work involved. You will know what is being installed, how the system will work and what to expect before work begins.

4. Installation or repair booked in

If you are happy to go ahead, we arrange a suitable date for the work. We aim to keep the process organised and minimise disruption as much as possible.

5. Professional installation or repair

Our engineers carry out the work carefully, making sure the system, controls and layout are set up properly. Whether it is a new installation or fault diagnosis, the focus is on reliable performance and even heat where you need it.

6. Testing, handover and aftercare

Before we finish, we test the system and make sure everything is working as it should. We will show you how the controls work, answer any questions and provide ongoing support if you need us afterwards.

Want a warmer home without bulky radiators?

Speak to us about underfloor heating options.

Underfloor heating service & repairs

Our underfloor heating servicing and repairs across South London and Surrey restore even, reliable heat to your home. We diagnose and fix the root cause of any issue.

System Performance: We address common problems like cold spots, uneven heating, and slow warm-up times. These are often caused by air in the system, poor flow, or balancing issues.
Controls & Thermostats: We repair thermostat and control faults, including unresponsive systems, faulty zone switching, and incorrect temperature settings. The issue often lies with the thermostat, wiring, or actuators.
Leaks & Pressure Loss: For wet underfloor heating systems, we can investigate pressure loss and leaks. We use careful fault-finding to locate the problem and recommend repairs with minimal disruption.
Regular Servicing: Routine maintenance helps spot wear early, ensures your system runs efficiently, and reduces the risk of major faults down the line.

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Frequently Asked Question

Is underfloor heating suitable for my property?

Most properties can benefit from underfloor heating, whether in new builds or renovations. Wet systems work well with ground floors or where there's sufficient space for pipes, while electric systems are often ideal for upper floors or specific rooms like bathrooms.

How disruptive is the installation process?

Installation does require access to your floor, but our team works efficiently to minimise disruption. For renovations, we coordinate closely with other tradespeople to ensure smooth project management.

Is underfloor heating expensive to run?

When properly designed and installed, underfloor heating is typically more energy-efficient than traditional radiators. The system runs at lower temperatures while providing superior comfort, which often results in reduced heating bills.

Can I control underfloor heating in different rooms separately?

Yes, we install zone controls that allow you to manage temperatures independently in different areas of your home, providing both comfort and energy efficiency.

How long does underfloor heating last?

Quality underfloor heating systems are exceptionally durable. Wet systems typically last 20+ years, while electric systems can last 15+ years with proper installation and maintenance.

Do I need a survey before underfloor heating is installed?

Yes. A survey helps us assess the floor build-up, room layout, heat requirements and the most suitable system for the space. It also helps us spot any practical issues early, so the installation is planned properly from the start.

Which is better for my project: wet or electric underfloor heating?

That depends on the property and the room itself. Wet underfloor heating is often a better fit for ground floors, extensions and larger areas, while electric underfloor heating is commonly used in bathrooms, kitchens, loft conversions and single rooms where floor height is limited.

Can underfloor heating be installed as part of a renovation or extension?

Yes, underfloor heating is often installed during renovations, refurbishments and home extensions. This is usually the best time to fit the system, as access to the floor is already part of the wider project.

How long does underfloor heating installation take?

Installation time depends on the type of system, the size of the area and the stage of the project. A single-room electric system is usually quicker to install, while a wet underfloor heating system across a larger area will take longer and may need to be coordinated with other work.

What happens once the installation is complete?

Once the system is installed, we test it to make sure it is working properly and heating evenly. We also explain how the controls work, answer any questions and make sure you feel confident using the system day to day.