Thermaze Logo
Mobile Hero

Underfloor Heating Installation with Local Experts

If you're considering underfloor heating for your home or business in London, Essex, or Hertfordshire, you probably have questions. How is underfloor heating installed? What's involved in the process? And perhaps most importantly, how much does underfloor heating cost? Let's talk through these questions together.

The Basics of Underfloor Heating Installation

You might think that underfloor heating installation is as simple as adding a layer under your floor finish, and you're partly right. Typically, the system is installed on top of a suitable sublayer—whether it's insulation, between joists, or directly on a structural surface—followed by your chosen floor finish, such as tiles, engineered wood, or something else. But there’s a bit more to it than that.

Underfloor Heating Installation

01

We start by looking at your home. Every property is different, and we need to understand yours to design the right system. We'll look at things like your insulation, your current heating setup, and the way you use your space.

02

Based on what we learn, we'll design a system specifically for you. This isn't a one-size-fits-all solution. We use careful calculations to make sure your system will provide the right amount of heat for each room.

03

When it comes to installation, we’ll need the floor prepared beforehand, which is usually handled by your renovation contractor. We have specific requirements for floor preparation to ensure everything is ready for the underfloor heating system, and we’ll provide guidance on what’s needed to get it just right. 

04

We'll then lay the heating elements. For water-based systems, this means laying pipes in a specific pattern. For electric systems, we'll lay heating mats or cables.

05

Once everything's in place, we connect the system to your heat source and controls. Then we test everything thoroughly to make sure it's working as it should.

How Much Does Underfloor Heating Cost?

This is often one of the first questions people ask us, and it's an important one. The truth is, the underfloor heating cost per sq m can vary. It depends on factors like:

The size of the area you're heating

Whether you choose a water-based or electric system

The type of flooring you have or want

The current state of your insulation

We know that's not a straightforward answer, but we believe in being honest. What we can promise is this: we’ll give you a clear, detailed quote before we start any work. We'll explain what each cost is for, so you understand exactly what you're paying for.

A Closer Look At Underfloor Heating Installation Costs

While we can't give an exact figure without assessing your specific situation, we can provide some ballpark figures to give you an idea of underfloor heating installation costs:

Costs vary significantly between new builds and renovation projects.

  • New Builds

    Since insulation and screed are typically already planned, we only need to install the pipes over the existing insulation and connect them to the system. This makes new build installations more cost-effective, usually around £25-45 per square metre, as the builder completes the screed as part of their original plan.

  • Renovations

    For refurbishment projects, low-profile systems are used to keep floor height minimal. These systems involve additional layers tailored to each project’s needs, which may include insulation panels or other specialised components designed to integrate seamlessly with existing structures. Costs for these setups generally range from £125-155 per square metre, depending on the requirements and suitability of each space.

Electric systems, on the other hand, tend to have similar costs for both new builds and renovations. Remember, these figures are just estimates. The actual underfloor heating cost per sq m for your project could be higher or lower depending on your specific circumstances.

Cost 1

Why Professional
Installation Matters

You might be wondering if you could save money by installing underfloor heating yourself. While it's tempting, professional installation is crucial for a few reasons:

Safety

Proper installation ensures your system is safe to use. This is especially important for electric systems.

Warranty

Many manufacturers' warranties are only valid if the system is professionally installed.

Efficiency

A well-installed system will heat your home or business more effectively and use less energy.

Longevity

When installed correctly, your underfloor heating should last for decades with minimal maintenance.

1

What to Expect During Installation

We won't sugarcoat it - installing underfloor heating does cause some disruption. You'll need to clear the rooms where we're working, and you might need to make alternative arrangements for a few days.

But we promise to keep the disruption to a minimum. We'll give you a clear timeline before we start, so you know what to expect. And we'll clean up thoroughly at the end of each day.

2

After the Installation

Once your system is installed, we'll show you how to use it. We'll explain how to set your thermostat, how to program different temperatures for different times of day, and how to use any smart features your system might have.

We'll also give you advice on how to get the most out of your new heating. For example, did you know that underfloor heating works best with a consistent temperature, rather than being turned on and off?

Is Underfloor Heating Right for You?

Underfloor heating can be a great choice for many homes, but it's not right for everyone.

It works well if

You're building a new home or doing major renovations

You want to free up wall space currently taken by radiators

You're looking for an energy-efficient heating solution

You like the idea of warm floors underfoot

On the other hand, it might not be the best choice if:

You have very thick carpet throughout your space

You're not planning to stay in your current home for long

Your budget is very tight

Heating guide image

Types of Underfloor Heating Systems

When it comes to underfloor heating installation, there are two main types of systems to choose from:

Water-based (or "wet") systems

These use warm water pumped through a network of pipes beneath your floor. They're typically more expensive to install but can be more cost-effective to run, especially in larger areas.

Electric systems

These use a network of wires beneath the floor to generate heat. They're usually cheaper and easier to install, making them a good choice for smaller areas or renovation projects.

The choice between these two often comes down to factors like your existing heating system, the size of the area you want to heat, and your budget for both installation and running costs. At Thermaze, we offer a range of systems to suit different homes and needs. Let's take a closer look at some of our most popular options:

Tacker System

The Reliable Classic

The Reliable Classic

This is one of our most requested systems, and for good reason. It's ideal for new builds with solid floors.

It's a great value, cost-effective method of installing underfloor heating within a screeded floor.

Key features

Designed for new-build solid floors

Heat output up to 100W/m2

Flexible pipe layout

Quick and efficient installation

Low Profile System (Castellated)

The Renovation Hero

The Renovation Hero

This system is primarily designed for refurbishment projects where floor build-up is at a premium.

The system incorporates a 12mm underfloor heating pipe within a plastic castellated panel, which is then covered with 20mm of reinforced levelling compound.

Key features

Low-profile system for retrofit projects

Heat output of up to 120W/m2

Exceptionally quick response time

Floor finishes can be laid directly on top

Low Profile System (EPS)

The Space Saver

The Space Saver

Another option in our low-profile range, perfect for retrofit projects with limited space for floor build-up. This system is a more budget-friendly solution and is best suited for engineered wood flooring.

This system uses aluminium foil for efficient heat distribution, offering maximum heat output with a quicker response than traditional screed systems. If you’re looking for flexibility in floor finishes, our castellated system may be a better option, as it can accommodate additional layers without restricting heat output.

Key features

Budget-friendly low-profile system for retrofit projects

Heat output of up to 80W/m²

Includes an insulation layer

Suitable for engineered wood flooring; some floor finishes may require an additional layer

Low Profile System (EPS)

The Space Saver

The Space Saver

Another option in our low-profile range, perfect for retrofit projects with limited space for floor build-up. This system is a more budget-friendly solution and is best suited for engineered wood flooring.

This system uses aluminium foil for efficient heat distribution, offering maximum heat output with a quicker response than traditional screed systems. If you’re looking for flexibility in floor finishes, our castellated system may be a better option, as it can accommodate additional layers without restricting heat output.

Key features

Budget-friendly low-profile system for retrofit projects

Heat output of up to 80W/m²

Includes an insulation layer

Image banner

Choosing the right system for your space depends on various factors, including your floor type, the age of your property, and your specific heating needs. That's why we always start with a thorough assessment of your space before recommending a solution.

Remember, every home is unique, and what works brilliantly for your neighbour might not be the best fit for you. We're here to help you figure out these choices and find the perfect system to keep your home or business warm and inviting.

Want to chat about which system might be right? Give us a ring. We promise we won't baffle you with jargon - just honest, straightforward advice to help you make the best choice for your space.

Maximising the Benefits of Your Underfloor Heating

Once your underfloor heating is installed, there are several ways to ensure you're getting the most out of it

Use a smart thermostat

This can help you control your heating more efficiently, potentially saving you money on energy bills.

Consider your flooring choices

Some materials, like tile or stone, conduct heat better than others.

Keep it consistent

Underfloor heating works best when maintained at a steady temperature, rather than being turned on and off frequently.

Regular maintenance

While underfloor heating systems are generally low maintenance, an annual check can help ensure everything's working efficiently.

Customer Testimonials

Google Image 2
Excellent on Google
5.0
AbFvOqm7IVoCDfkXX8MNGEIIk_6S1Yov5tIHRsI_X4NjxFATZSjidwzVsp5-gl6KvaFFOLcM1N4aowGoogle Image
Sue Man6 May 2025
Sergiu did an amazing job identifying the root cause of my underfloor heating not switching on despite a new thermostat being installed recently. His attention to detail, sharing of knowledge and kept me informed throughout the process of the work being carried are highly commendable. He successfully returned my electric flow to my underfloor heating after isolating the incompatibility of certain features of my new thermostat to my old one, quickly made some wiring upgrades and everything is perfect again. Job impeccably done. Excellent!
AbFvOqlIn5JUQLT23i-9znzWLC_V3boBQ4my1WX7Px67tTIN2nWZ7NCoZyvhgaQAPcDGs4GmlzPuSwGoogle Image
Tina Pristovsek24 March 2025
I’d give 10 stars if I could. I highly recommend Thermaze. Second to none in terms of expertise and capability. Sergiu and Andrei were extremely efficient in getting the whole house UFH system repaired, relevant parts replaced, system recommissioned and also all thermostats upgraded (Wi-Fi enabled to control from an app) at request. All sorted in 48 hours and no mess. Don’t waste your time with anyone else!
AbFvOqlZyNp0O7g189SiZdEgybS5rx5KFkYNaBDYitbH9i5UO9Hsh0DN5GSLrnKP2nbvjxe_dgfU5wGoogle Image
O Kocademir12 March 2025
Andrew was excellent; very professional & knowledgable. He fixed many issues including wiring with our UFH and brought the system back to life!
AbFvOqmOXYRdBosb8VkdTWi6JufZGhRPJKUwtd6gORxCOoQ7j7HXr2TRGavI2jwlIfql93z08r2bRwGoogle Image
Vinay Raval15 February 2025
After 7 years of frustration with my UFH system not working properly. Sergiu and team came to the rescue with a complete upgrade! Thermaze has a great work ethic they worked around the clock, 5 days in total from 9 till 9 one day, whilst making sure that we were comfortable and had sufficient heating throughout the work to period. Replaced and re-piped both 12 port manifolds flushed and treated the system and configured it to 6 x Honeywell Evo thermostats and communications tablet. The knowledge experience and skills displayed by Sergiu and team is the best I’ve seen for a long time. They are polite and did an extremely tidy job. I would highly recommend them they are literally masters in their field.
AbFvOqlgpex3DSxLerZDUZ-NrehIkmhwsZkIR5RYMgMBPQ0-CJV2tubkBX0wZNMjvXv4Yrn9Hwfj7QGoogle Image
Damien Smith1 February 2025
We used this company to service and repair our underfloor heating, we would thoroughly recommend them, they are completely clear in diagnosing problems in complex heating systems and clear in their quotes for repair. Realiable, punctual with and excellent with communication throughout the whole process.
AbFvOqk_j_FPsLbatunZdw4xPYz9RPMKHWkQ1hJT_cAWABAYmq_krS3u8ngMsPdfOQZCpEmiz53jwwGoogle Image
Patrick Murphy30 December 2024
Thermaze completel changed all the manifolds and fitted a new honeywell control system. For the first time since since we bought the house 6 years ago we have control of our underfloor polypipe heating system. Whilst they seem expensive the guys are very knowledgeable about this subject and their work is tidy and professionally completed. I wish I had come across them sooner it would have saved me a lot of money wasted on other so called experts, who failed miserably.
AbFvOql-A2TPMy97mYjO1IQFHVBi7OcubpyK4U8tw56OR9HU4zlFDgdpIUEj8QM8AMlz3EPIuyx_Google Image
Lindsay Russell3 December 2024
Had underfloor heating installed by Thermaze and they have been absolutely brilliant. Sergiu and his team have been so helpful during the installation. The installation and workmanship was tidy, neat and on time. Nothing was too much trouble. Would not hesitate to recommend them
AbFvOqlETqn4PZ5u90KpKNRw_KotJQw4qmJFX0jWHCs6s1DY4A7LVMRNnI7rMjv6GrwHVHZCXz3gJwGoogle Image
pc 4u8 October 2024
Our water underfloor heating system was not working correctly due to a leak that a previous engineer had failed to fix properly. We contacted the Thermaze team, who provided an estimate based on images and a couple of conversations. They reassured us that it was a simple fix for them —and they were absolutely right. This company is on top of their game. The engineer was a true professional, fixed the issue within the estimate, and even checked the radiators in the house. They kept everything super clean and kept me informed throughout the process. Thermaze is reliable, honest, clean, and truly professional. I highly recommend them for any underfloor heating issues. A++++
AbFvOqnVyyuZTUGPlGOnbokt98tLMG6D3jDqkKQ1l15EIWWvcGepJu56XHRH7fq37OYDc4pX5w0u-wGoogle Image
Sayeedul Ahmed30 August 2024
Very professional and prompt service to commission and balance a new wet underfloor heating system. Highly knowledgeable and experienced with friendly service.
AbFvOqmysKteitX9r0yO5quN4-xrNvVCdidhqvrdBWrfZqfJzOjZ5uJlwgztzoqoekv1yGIpaiDWGoogle Image
Henry Beverley13 March 2024
THERMAZE sorted out my Underfloor Heating problem quickly and most professionally.
AbFvOqnpmueOPAv8MUJubKX5GKHdpshwHbqRVYRIvfBDisKkgMF1XAYf186841ayiysdwEek8v3kGoogle Image
JEREMY LEWIS29 January 2024
I have had great trouble finding wet-underfloor heating experts and, having unsuccessfully used a few others, am truly delighted to have met Thermaze. They came quickly to assess the problem. They then proposed a solution, returned and solved the issue and performed a full service, all completed on budget. Andrew the engineer was excellent and explained everything he was doing as he went along. I highly recommend Thermaze.
AbFvOqmndrP0h3Srbcf8E1JqgZfQd873qoGIW7-0HCs8307WcOtd6UZCZfkiOKHlyIKoNjvZB11WGoogle Image
Adam Skinner16 November 2023
I’m very pleased with my UFH service from Thermaze. They were very knowledgeable and informative about what needed to be done and did a great job in the agreed timeframe. Many thanks!
AbFvOqmzmNvLhET4ndxfk67e3iBnmvvZMbzlhiwTe6MBqagUydeOUnPdR7X6Dwdmqi3f3fYByBad0AGoogle Image
Rob Moore9 October 2023
Highly professional, very knowledgeable and also helpful and friendly. Very impressed.
AbFvOqkWe_uNFAJTR5OF9YU8mAJN-xveSp3iK3VaTvjoQVykgvkQN8LGGanZkOc4Z9mdh2F42fI5Google Image
Bob SG31 May 2023
Professional, in their job. Very tidy and polite. Leave site with 5/5 expectations . Recommend 100%
AbFvOqnIQ0EvJQuvQcbC-M5Oo5J3glW5T-5jciYj65ZCYTIhgB-cysWg6BErxt32YVEV6_1Gzp3JdAGoogle Image
Neil Persaud31 May 2023
Fast, knowledgeable & professional service, replaced 3 manifolds, switchers, removed all controllers, remediated wiring and installed hive. Will continue to use for annual servicing of underfloor heating system Highly recommended.
AbFvOqnRyzVvbEIJoD3TabW0-HV6hZVpk5EMWZ0vvnKFhJy3coRt31HGk2O70uhlhq98q7_m420KGoogle Image
Krishna Udathu27 April 2023
Sergiu is an expert and fixed my underfloor heating issues at lightening speed. I had a new underfloor heating system installed 6 months back never got the temperature about 22-23 degrees. So found Thermeze online and called though not sure what to expect. Sergiu not only identified the issue with wiring but also fixed it in an hour. Apart from his expertise I liked his attitude - explaining at every step what he was doing. To top it up he provided valuable advice on heating and also adjusted the flow rates. Now I can feel the underfloor heating finally working. I would definitely recommend Sergiu and his services.
AbFvOqlTmJpQjxy9IYKoV3NBDrsvLz-sDdO8LF1v4JxnTptgiNniIQaBj_RYJWbNdX2nVfGIKzMhGoogle Image
Hongyi Han13 December 2022
Sergiu and his team are very polite and professional. The engineer was able to quickly identify the source of my underfloor heating problem and fixed it in no time. They clearly knew what they were doing! Highly recommend them.
AbFvOql63AO4ZR47ujbrk2sFd5vpVEcMHz9rmmxjeixZux5X1E8AoVucvj4fSlKXI7VlqSPB-98JAgGoogle Image
bob ski4 November 2022
I instructed these guys to install my u underfloor heating guys. Absolutely fantastic. Professional, helpful reasonable priced. Very impressed and job was done so quick. Definitely recommend this company.
AbFvOqnaTL67Ic9AtrD7RaPtR2fWCgWQEOrsH1JciSW7J1q2Q7zzrw9z5ED1sSLt2yFqnxBauutooAGoogle Image
Jeremy Yapp2 November 2022
Sergiu was really clear describing the problem (ufh system not functioning) and set out the options (and what they would cost) really clearly. The work was done promptly and successfully, I'd definitely use Thermaze again but I think it's all fixed now so I expect I won't have to!
AbFvOqnHKdVZo02YpnSk4WtNt48IBmHSUXHZw5k7YC6PsAr7uoRLhNLX3Sjs6jAdV8OQgZCQmGrb0gGoogle Image
jatin chohan5 October 2022
Excellent service by Sergiu. Came out and inspected the UFH pipe work using his thermal scanner. Identified some cold spots but on inspection of the manifold, noticed the actuator valves were sticking and faulty. He ordered better brands and came back following day to fit. All working properly and finally got heat back into the areas that were cold. Definitely recommend
AbFvOqk9g4WopbqPJ-O8AUui5blBlFuywJMrY28lvm_hEIqeqDXhHq0DJ0M1XoIEbnDbxXlInU8NGoogle Image
Denise Bevan5 February 2022
This company is excellent and have just done a total repair of our underfloor heating which hasn’t worked properly for years! They were really knowledgeable, polite and efficient. It is working so beautifully and we are warm again! Thank you for a great job.
AbFvOqknp-odh2AuB0WwTryysnUTSIfE03J9gt1RDQviInrBOnoJElvc0zuVTrW4JGhEFcwly4a3LAGoogle Image
Ann-Marie Brennand13 January 2022
We had underfloor heating installed throughout our whole house, Sergiu and his team were great and would highly recommend them. We really liked Sergiu's relaxed approach and was more than happy to answer all of our questions and any concerns we had.
AbFvOqmMxm3WCjnO58pVoukBKYrYOb8FDqAUlaGnRB3UlNzURdh2oHn1VPxKDE2pjdtgN20dSDKg2gGoogle Image
John MacMillan16 March 2021
Our heating system had broken and had never worked very well. Sergui came and fixed the system and then worked some magic so that it now works as we had always hoped it would. Great job!
AbFvOqkO5lq0nXcN-z7ZdkYwjJfg6WKfR0Tybobx42OUI1v5V3_c8G7mGtQzOlR0o3I4Sdk5k3v2xgGoogle Image
Nikki Simpson22 February 2021
Sergiu & his team installed an Ambiente Ambisolo heating system over 35sqm, along with a Hive Active Smart Heating system, and were brilliant from start to finish. They were recommended to me by Ambiente (the manufacturers of the system), and they came on board at a critical point during my renovation, after an underfloor heating system from another supplier had failed. It was not a straightforward job - the system had to be retrofitted over an existing concrete slab, and they also had to work with the first installation attempt, but they were completely unfazed by this. They completed their installation to a high standard, with real professionalism and attention to detail. Sergiu also took the time to follow up on progress a few weeks after the system had been commissioned - and in general communication was excellent throughout. I wish all the tradespeople I had worked with on my renovation had been as meticulous and professional as Sergiu and his team! I honestly thought companies like this were a thing of the past. I can't recommend them highly enough.
AbFvOqm8ULS9tnw-xzd5CZZuz8zdjLsgCWDKUg3JoycqVY6IfGjh_9o01QkkM-HcoY22etpnT438DQGoogle Image
Nick C4 February 2021
I recently had my underfloor heating system repaired that was not working. Sergiu is very competent and knowledgeable about underfloor heating. He identified and repaired the problem as promised.
AbFvOqliGVfd_Iqi99Vub88ZDrP6amDb28TfncWsucfldYKTHqRmtQAVNzaUkCJDqoNb-alK9TbD3wGoogle Image
Kazz Azim29 February 2020
New UFH system had some issues, needed balancing. working great after Sergui at thermaze came and repaired it.
AbFvOqlgGbo2LwQZdXDHjkkBX3hxwu4V4HKDuyXjOlv3S6MBVCwLm1xJfrI1HrMHBK4ixb11RxjOhwGoogle Image
Vinit Joshi28 February 2020
Very knowledgeable and professional. Went about investigating very logically and dealt with issues.
AbFvOqluKiYYw_09IDngC7vBSpSrntT9cELrF74EUn9ZVOoZgt2dCgJzNo4IYblJtYPoQXOCs1pjswGoogle Image
Sally Charter12 December 2019
Sergiu from SG Underfloor Heating came to assess problems I was having with my underfloor thermostatic control. He explained what was going wrong with the system... and then fix it! He fitted five Nest smart termostats in a day and gave fabulous service: reliable, knowledgable, efficient and extremely skillful.
AbFvOqn_ycVzA4Z4D9npJGBNd19ye9fNodwdmzj1N1Ls0aaJXOqHyUofeQnYflItCxLfA7Uzr6RxnQGoogle Image
Michael Bell4 November 2019
I found Sergiu online with a search for underfloor heating engineers. The people who installed the heating couldn't even set the programmers! Sergiu was very pleasant and professional. He tried to change the thermostat but no luck, so he checked the switch and found it faulty. He replaced this and set the controls in 2 rooms! Sergiu kept me informed at every stage and I thoroughly recommend him for any issues with underfloor heating! Excellent service. Thank you.
AbFvOqls-2x83W0fRyyZb2rOM0v0ngMpCdD48gW-MwvjJgI_Lr269Y4FsZaTZyVib0YNKgup3CjHSAGoogle Image
mark kupitz24 June 2019
Sergiu and his team did a fantastic job installing a hot water underfloor heating system over 4 floors of a central London terrace house plus a separate electric cable system in an unconnected area of the house under extremely challenging conditions involving flooring installers and electricians working simultaneously -- with as many as 6 other people working in the same areas in my house as his team at times. From my initial conversation with him I could tell he knew his stuff and this was more than borne out by my experience when he came to do the work. He was pragmatic and creative in dealing with unexpected and not foreseeable issues that arose several times during the job when it became apparent that the existing heating, hot water and general plumbing systems in my 190-year-old house made no sense -- which is the most generous description although f-cked up is more accurate -- due to the myriad hodgepodge changes and repairs that had been carelessly made over the years, and he came up with cost effective solutions that he was able to achieve without adding to much extra time beyond his initial estimate. As a result, I ended up with a boiler/radiator/hot water supply system that is finally properly functional and efficient in addition to a state of the underfloor heating system with 7 separate zones for which I initially hired him. He was always courteous and helpful and had a great attitude and work ethic and worked well into the night most nights and on the weekends with my blessing in order to complete the job as quickly as he could. In short Sergiu more than exceeded my high expectations and I highly recommend him without any reservation or hesitation. I note that this is the first time I have been totally satisfied with the work done by any tradesperson in this country since I moved here from the United States almost 20 years ago -- and I have done 3 total house renovations and numerous other small and medium-size projects over those years, so I expect that I have had more dealings with building related tradespeople than most other people who aren't property developers.
AbFvOqkP8NikAs27w6l6mMIT-8dKjHYik5wIKIjnd13WQ4G42Uh8Evcg0-x3tLGpuTC3vlrcM9_xGQGoogle Image
Sal Pettah2 April 2019
SG Underfloor Heating Good Informative Well Planned Punctual and good timekeeping Quality Products Used Professional workmanship Tidy Ultimate Finish On Time completion Reasonable Priced Provided all Paper works as this product has a long warranty that needs to transfer to next generation Certificate of warranty from the manufacturing company, Pressure Test Certificate, Commission Certificate, Plan121,with Photographs of work done I Highly Recommend Sergiu Grosu For this work which he has done Dated 27/03/201
AbFvOqknos2hTIMfrD73dX_WvFiSbqnpnmUCgZpzfSXX8rDup6JCHCXIzEEAmygXJYSjoVBF9jSXFwGoogle Image
Andrei Suiu9 January 2019

Ready for Warm, Efficient Underfloor Heating?

We'd love to hear about your heating needs. Whether you're considering underfloor heating for a new build, thinking about retrofitting an existing property, or simply have questions, we're here to help.

Our team is ready to offer advice tailored to your specific situation. No obligation, just friendly, expert guidance.

Get in Touch

Fill in our quick contact form, and we'll get back to you within one working day. Let's talk about keeping your space comfortable and warm.