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Thermo Folio underfloor heating · Made in Spain

Thermo Folio underfloor heating — Even heat from your feet up

Thermo Folio is a flexible heating film installed under the floor: laminate, tiles or screed. It stays hidden and protected.

It gives even heat from your feet up within a few minutes, with very low consumption. With its WiFi thermostat you heat only the area you use, when you use it.

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✔ VAT included · 🛡️ 5-year warranty · 90-day satisfaction guarantee
An installer spreads the vapour barrier and the Thermo Folio sheet over the floor of a building site. Then the cement layer is shown on top, and the finished floor with tiles. 🎬 Thermo Folio underfloor heating
★★★★★

More than 300 five-star reviews from customers who already have it at home, and 4.6 out of 5 on Google.

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Oculto bajo el suelo, para siempre

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La lámina queda cerrada bajo la tarima, el laminado o el gres. Sin tuberías, sin caldera y sin nada que revisar.
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Climatizado en unos 20 minutos

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Desde frío, la zona queda a gusto en unos veinte minutos. Y la barrera de vapor de la instalación hace que el efecto térmico sea más rápido.
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Termostato WiFi incluido

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De 16 A, incluido en todos los modelos. Cada estancia con su temperatura y programado desde el móvil: que se encienda 20 minutos antes de llegar a casa.
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120 W por m² de lámina

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Igual en todos los modelos. Un TF-12 son 1.440 W. Se calienta solo la superficie que hace falta, el 80 % de la estancia.
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27 medidas, del TF-02 al TF-28

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Una por cada m². El TF-28 es el mayor: 28 m² y 3.360 W, el tope de los 16 A del termostato.
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Mándanos el plano

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Te decimos los metros de cada estancia y el modelo que le toca, sin compromiso.
Suelo radiante Thermo Folio
The essentials

Thermo Folio underfloor heating

  • Flexible heating film under the floor
  • Under laminate, tiles or screed
  • Stays hidden and protected
  • Even heat from your feet up
  • WiFi thermostat: only the area you use

🎬 Quick videos, no words

On cement: with tiles or stone slabs

The Thermo Folio sheet is laid on the same day the cement layer is poured. You spread the vapour barrier, lay the sheet, and the cement and the tiles or stone slabs go on top. No pipes and no plumbing work.

The vapour barrier stops damp getting into the floor in the months without heating and makes the heat arrive sooner.

The Thermo Folio sheet is unrolled over the insulating base, the wood flooring is laid on top and the floor is finished, with a wooden look.

No cement: under wood or laminate

Under wood or laminate flooring you do not need cement. You spread the insulating base, unroll the Thermo Folio sheet and lay the flooring on top.

Even heat across the whole room, with no radiators in sight and no maintenance.

Two workers unroll the transparent Thermo Folio film over black insulation in a large, empty room, spreading it out across the whole floor.
OFFER until March 2027 · from 90 m²

Free installation: up to 130 m² in a single day

This is how Thermo Folio is installed: the film is rolled out across the floor and is ready to use the same day. It is so simple that in the Netherlands, where we have been selling it for more than 16 years, customers install it themselves.

On our YouTube channel How Thermo Folio underfloor heating is installed ▶ Watch on YouTube Opens in a new window

See all the channel's videos →

🎛️ Control your heater: WiFi thermostats and plugs →

Elige tu medida

Cada modelo son sus m² de lámina, a 120 W por m². Pulsa el tuyo: se abre en otra pestaña, así puedes volver aquí y elegir más medidas para las demás habitaciones.

2 m²
TF-02
135,05 €
3 m²
TF-03
157,60 €
4 m²
TF-04
205,15 €
5 m²
TF-05
252,70 €
6 m²
TF-06
300,30 €
7 m²
TF-07
347,85 €
8 m²
TF-08
395,40 €
9 m²
TF-09
442,95 €
10 m²
TF-10
490,55 €
11 m²
TF-11
538,10 €
12 m²
TF-12
585,65 €
13 m²
TF-13
626,40 €
14 m²
TF-14
667,15 €
15 m²
TF-15
707,90 €
16 m²
TF-16
746,45 €
17 m²
TF-17
785,00 €
18 m²
TF-18
823,55 €
19 m²
TF-19
862,15 €
20 m²
TF-20
900,70 €
21 m²
TF-21
939,25 €
22 m²
TF-22
977,80 €
23 m²
TF-23
1.008,05 €
24 m²
TF-24
1.038,30 €
25 m²
TF-25
1.068,50 €
26 m²
TF-26
1.081,30 €
27 m²
TF-27
1.094,05 €
28 m²
TF-28
1.106,80 €

IVA y transporte incluidos · termostato WiFi de 16 A incluido en todos los modelos.

📐 Sube tu plano y te decimos las medidas

Una foto del plano, el cuadro de superficies o un croquis con las medidas. Leemos los metros de cada estancia y te decimos qué modelo le toca a cada una.

Puedes calcular hasta tres instalaciones. Si necesitas más, escríbenos y te ayudamos.

📐 Subir mi plano

How it is installed

It can be laid under parquet or laminate flooring, and also under 2-3 cm of screed with a tile or terrazzo finish.

En tarima o suelo laminado

Under parquet or laminate

1. At the bottom, thermal insulation or a protective plastic sheet covering the whole heated area.
2. The heating film is laid on that first layer.
3. A foam underlay goes over the heater. If that foam has an aluminium face, the aluminium faces upwards: never towards the heating film.
En cemento, con gres o terrazo

Under screed, with tiles or terrazzo

Steps 1 and 2 are the same.
3. When the finish goes over screed (tiles, terrazzo and similar), a vapour barrier is laid over the film and then the 2-3 cm of screed.

If you are unsure about your material, send us a photo and we will tell you how it goes.

📸 Examples of installations

💡 How to choose the model

You don't cover the whole room: the film covers about 80 % of the usable floor, leaving 20-30 cm free along the walls. The edges don't need heat, so nothing is wasted.

The sum is simple: usable m² × 0.80, then step down to the model that fits. A 10.9 m² room means 8.72 m² of film: TF-08, not TF-09.

Some places never get film: under kitchen units (leave 80 cm), islands, the bath or shower tray and fitted wardrobes. Above 36-37 m² the room is split into two zones, each with its own thermostat.

Send us the floor plan and we will tell you the square metres and the model for each room.

Every model comes with its thermostat

The box contains the heating film and the 16 A WiFi thermostat: nothing else to buy. If we do the installation, we also draw the zones for you; and if you fit it yourself, upload the plan and we tell you the model for each room.
Embalaje de cartón reciclado sin imprimir

Technical data

Thermo Folio underfloor heatingWhole-home heating from the floor, under wood, laminate or tiles
What it isFlexible thermal film fitted under the floor and hidden from view
Power120 W per m² of film (TF-12 = 1,440 W)
Voltage230 V · 50 Hz
Working temperatureAbout +12 °C above the unheated floor
ModelsA wide choice of models: 27 sizes, from TF-02 (380 × 55 cm) to TF-28 (5,320 × 55 cm)
Film55 cm wide · 190 cm long per m²
WeightFrom 550 g (TF-02) to 6.85 kg (TF-28)
PackagingBox 62 × 12 × 12 cm
Largest modelTF-28: 28 m², 3,360 W, 14.6 A (the 16 A limit of the thermostat)
Made to order80 W/m² for homes (lower electrical load) · 400 and 600 W/m² to de-ice paths and garage ramps · any size, up to 60 m² per piece
Accessories included16 A WiFi thermostat included with all models
FloorsUnder wooden flooring, laminate, porcelain stoneware or cement
MaintenanceNone: no pipes, no bleeding and no servicing
WarrantyLifetime on the film (terms in writing) · thermostat, 3 years
Returns90 days
Made inMolina de Segura (Murcia), Spain
See the 27 sizes and choose mine →

🛡️ Lifetime warranty on the film

We commit for life to the film: it is sealed under the floor, out of reach, and if it fails we answer for it. The conditions are written in the warranty supplied with the order. The thermostat has 3 years, and if it ever fails it is replaced and the installation stays as it is. You have 90 days to return it.

Frequently asked questions

Is it suitable for any floor?

Yes: under wooden flooring or laminate, and also under 2 or 3 cm of cement screed finished with porcelain stoneware, terrazzo and similar. Further up, in “How to install it”, you have both methods explained step by step with a drawing. And remember: if any layer has an aluminium face, the aluminium must never face the thermal film.

Does it need building work?

Not plumbing: there are no pipes, no boiler and no tanks. What you do need is the electrical pre-installation: a separate circuit with its own circuit breaker and residual-current device, and the cable from the ceiling to the thermostat box, which is placed 130 cm above the floor. This is signed off by the electrician, who has the final say.

Which model do I need?

You measure the usable floor area of the room, multiply it by 0.80 and round down to the model that fits. A 10.9 m² room gives 8.72 m² of film: TF-08. No film is laid under kitchen units (leave 80 cm there), islands, bath, shower or built-in wardrobes: these are deducted first.

What if the room is very large?

Up to about 36 m² a single zone with one thermostat is used. From 36-37 m² upwards, two zones are made, each with its own thermostat, divided according to the layout of the home: they can be two of 18 m², or one of 12 and one of 14.

How much power does it use?

120 W per m² of film, the same in all models: a TF-12 is 1,440 W. And as the thermostat is WiFi, you heat only the room you use and at the time you use it, which is where the real saving is. In the calculator you can see your case with your own square metres.

Can it be walked on during installation?

Yes. You can walk on the film while it is being installed, taking care not to trip. It folds like a sheet of paper to go back, and never more than two layers are laid.

What if water gets in or there is damp?

The film is sealed and withstands a lot of humidity. If the flat is flooded, the film circuit is cut off until the floor is completely dry, and then it works again. As a rule, underfloor heating must be protected by a separate residual-current device.

Will you install it for me?

Yes. We carry out the installation with the vapour barrier, the thermostat and all accessories, and from 90 m² it is included at the website price, anywhere in Spain and Portugal. For commercial premises or large homes, ask us for a quote.

What warranty does it have and can I return it?

The film comes with a lifetime warranty and the thermostat with 3 years, and the terms reach you in writing with your order: you know from day one what we commit to. And if you change your mind, you have 90 days to return it and we refund the amount; we only ask that it comes back unopened and in its box, as it left the factory, so that someone else can enjoy it new. This is in addition to your statutory right of withdrawal, which you always have.

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📄 Technical documentation
Sizes, power ratings and connection data, to download or print. If you need it for a project, the certificates are there too.
All the documentation →
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