How much does a ThermoSphere Mesh electric underfloor heating mat cost?

When people start looking into electric underfloor heating, the first question is almost always: “How much does it cost?” It’s fair. Whether you’re renovating a bathroom, upgrading a kitchen or just tired of cold tiles in winter, understanding the price of a ThermoSphere Mesh heating mat is key to making an informed decision.

In this guide, we’ll break down the cost of the mats themselves, what comes with them, installation options in broad strokes and how they compare to other heating solutions. By the end, you’ll know not only what you’re paying, but what value you’re getting.

The short answer: typical cost of ThermoSphere Mesh mats

ThermoSphere Mesh
mats come in pre-sized mats ranging from 1m² to 24m², and three common wattages: 100W, 150W, or 200W per m².

Average costs*:

• Per m²: £35 – £55
• Small bathrooms (3–4m²): £150 – £220 for mats
• Medium kitchens (6–8m²): £300 – £420 for mats
• Large lounges/open-plan spaces (10–15m²): £550 – £750 for mats

Pro tip: Larger mats reduce per m² cost. Using fewer, bigger mats can make your budget go further and save installation time.

*all prices are Inc. VAT and correct at the time of publishing

What’s included in the cost?

Buying a ThermoSphere Mesh mat isn’t just paying for a roll of cable. Here’s what comes with it:

• A pre-spaced mesh heating mat for fast, even coverage
• Lifetime warranty on the cable (when installed with a compatible ThermoSphere thermostat and sensor and registered correctly with us)
• Safety certifications (UK/EU standards)

We’ve been designing and building electric heating systems in Britain since 1998. Every product is made in Kent - the Garden of England - combining years of expertise with reliable craftsmanship. With us, you get a heating system that’s built to last, made here at home.

However, there are some things which aren't included in this initial cost that we highly recommend. They are separate products, but all work together to help achieve our goal of making electric heating easy for you.

What’s not included, but almost always needed:

• Thermostat: £100–£200 depending on type (options include T-MO, BT21 and Dual Control)
• Insulation boards: £11–£16 per m² depending on thickness and material
• Flexible tile adhesive or levelling compound: £10–£20 per bag

Skipping these extras might save pennies upfront but the drop in efficiency could cost you in the long term.

Installation options: DIY vs Professional

While we’ll explore detailed installation cost factors in this blog, here’s a quick overview:

• DIY: You can roll out the mat yourself. UK regulations require a qualified electrician to complete the final connection, usually £50–£150 if they attend specifically for the EUFH.

Professional: Turnkey service for those who want everything handled. Labour rates vary depending on room size and complexity, but a full professional install often costs £60-£85 per m² according to Checkatrade.com.

Even with a DIY setup, you’ll likely still need some professional input, this is not “plug-and-play” heating!

Example cost scenario (Bathroom, 4m²)

Let’s put some numbers together for context:

• ThermoSphere Mesh mat (4m², 200W/m²): £150–£220
• Smart Thermostat: £100–£200
• Insulation Boards (4m²): £50–£100
• Adhesives & Levelling Compound: £30–£50
• Electrician sign-off: £50–£150

Total DIY (with electrician): £400–£700
Total Professional Install: £600–£1,100

How does this compare to alternatives?

When weighing up ThermoSphere Mesh mats, it helps to see how they stack up against other common underfloor heating options. Here’s a quick comparison:

Electric foil mats

• Typical cost: £40–£60 per m² (kit only)

• Installed cost: Around £40–£90 per m²

• Best for: Floating timber, laminate or engineered wood floors where low build height is critical

• Takeaway: Similar upfront price to mesh mats, but generally used in fewer settings

Decoupling membrane + loose-lay cable

• Typical cost: Membrane £10–£60+ per m² plus the heating cable

• Installed cost: £50–£100 per m²

• Best for: Tiled areas that need an uncoupling or waterproof layer, such as large-format tiles or wet rooms

• Takeaway: Slightly higher cost than mesh mats because you’re buying both the membrane and the cable, but offers extra protection and flexibility in layout

Wet (Hydronic) underfloor heating

• Typical cost: £85–£190 per m² installed (depending on new-build vs retrofit)

• Best for: Whole-house heating, especially in new builds or large open-plan spaces

• Takeaway: More expensive upfront than electric, but cheaper to run in the long term, especially when paired with renewable heat sources like heat pumps

What do real customers say about value for money?

When weighing up the cost of underfloor heating, the real question for most buyers is whether the investment feels worth it over time. Many ThermoSphere customers say it does.

One homeowner, who had a system fitted more than a year ago, gave a 5-star review, calling it a “great value package” thanks to the combination of product quality and reliable after-sales support.

Installers also highlight value in terms of efficiency on the job, one tiler commented that ThermoSphere is “without a doubt my choice in electric underfloor heating supplier,” explaining that he uses it whenever possible because the mats save him time and reduce call-backs.

Trade buyers add another layer, pointing to the brand’s “excellent customer service and next-day delivery” as a reason they keep coming back, which ultimately lowers their project costs. Across the board, reviews suggest that while ThermoSphere isn’t always the cheapest option upfront, customers consistently feel they’re getting strong value for the money they spend.

Final thoughts

So, how much does a ThermoSphere Mesh electric underfloor heating mat cost?

• Product price: £35–£55 per m²
• Total installed cost (bathroom, 4m²): £400–£1,100 depending on DIY vs professional
• Value: Comfort, energy efficiency and long-term reliability

For a renovation or new project, getting a tailored quote based on your exact room size and layout is the smartest way to know where your budget stands and when you can start enjoying those warm toes.

*all prices are Inc. VAT and correct at the time of publishing

Electric heating made easy

Questions?

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