Underfloor heating in the bathroom - how to install it yourself cheaply and in half an hour?

March 13, 2025
Bathroom floor heating and its installation by yourself
Bathroom floor heating and its installation by yourself

You have probably noticed that in winter it is very unpleasant to walk on cold tiles, and as soon as you get out of the shower, you feel great discomfort standing barefoot. Underfloor heating in the bathroom would definitely be a big advantage in this case, because let's be honest, the bathroom becomes the coldest room of all in winter. Fortunately, making a warm floor in the bathroom is very simple and quick, and the price is really affordable for each of us.

Electric floor heating

If you live in an old or new apartment building, installing water-heated floors legally is a very complicated process. You would need a new project, a whole bunch of permits, and we guarantee that you will incur really large financial costs. Therefore, we have another solution.

The easiest way to make heated floors in the bathroom is electric floor heating matIn this article, we will tell you how to choose the right heating mat, how to install it on the floor yourself in just a few minutes, and we will find out about the functions of thermostats. 

How to choose the right size heating mat?

First of all, measure the area of your bathroom. Since the underfloor heating mat is not installed under furniture (showers, bathtubs, washing machines, toilets, etc.), also calculate the approximate area of all installed furniture. Then, subtract the total area of the furniture from the area of the room and you will get the square footage of the free area.

Floor heating in the bathroom using an electric heating mat

For example: The bathroom in our photo has an area of 7.6 m². The shower, bathtub and toilet occupy a total of 1.8 m².

So, 6.8 m² - 1.7 m² = 5.1 m². Rounding up, we will need a rug measuring 5 m².

A few small tips:

  • When choosing a heating mat, always round down the required heating area.
    and select the closest size heating pad.
  • The distance from the heating mat to the wall must be at least 100mm.

Installation of underfloor heating mat

The bathroom floor heating mat can be installed on a concrete or other solid base. By the way, the base itself must first be coated with a waterproofing coating. Since the heating mat consists of a cable and an adhesive fiberglass mesh, you can start laying the mat immediately after cleaning the surface thoroughly. The entire mesh is rolled out from one end of the room and worked to the other. To rotate the heating mat, the mesh is cut (Fig. 2) without damaging the red heating cable.

Installing underfloor heating mat under tiles
 

Installing tiles in the bathroom on underfloor heating mats

That's it! The bathroom underfloor heating mat has been laid. Before starting to install the tiles, we recommend pouring a self-leveling layer in the room. The advantage of this layer is that it will help protect the cables and allow the flooring specialist to move easily and comfortably around the room while laying the tiles.

Pour the leveling compound so that it covers the underfloor heating mat. Use an elastic compound, which will be stronger because it will not start to crack and break when exposed to heat.

Installing tiles on Devinera electric underfloor heating mat

The final step is a controller for underfloor heating

Every heating system requires a controller thermostat – controller. You can choose any thermostat for electric heating mats: simple mechanical, smart, programmable or even controlled via wireless WIFI connection. Since the heating mats already have ready-made and connected wires, all you have to do is connect them correctly to the controller and you will have a fully functional heating system. If you encounter difficulties connecting the mat to the thermostat or have other questions, in this case our specialists will help you solve installation problems.

Underfloor heating controller with WIFI for electrically heated floors

You can find our contacts here: contact us.

Underfloor heating in the bathroom with a discount

By the way, as we promised. By purchasing electric floor heating mat together with smart controller for heated floors enter discount code "DEV10" and shop cheaper.

 

  1. Good day. What is the price of an electric mat? Bathrooms 5 sq m need

  2. Hello,
    Bathroom 10m2, tiled floor, no underfloor heating. How to install electric underfloor heating without dismantling the tiles?
    Thank you!

    • The easiest way: stick an electric underfloor heating mat on top of the old tiles and stick new tiles. 🙂

      • hello,

        and underlayment under the heating mat is not needed? directly on the concrete?

      • Hello, Edita. Underlayment is not required under the heating mat or cable. The mat can be installed directly on the concrete base.

  3. Hello, what power should I choose? Another question is whether it is necessary to install the entire area or just half the floor.

    • Hello, 100 W/m2 is enough for a bathroom. We recommend installing the heating mat over the entire area that is not covered by furniture. In this case, the floor will not have cold zones and will not cause discomfort.

  4. Gal yra koks būdas apšiltinti vonios grindis kaip jau sudėtos akmens masės plytelių grindys. gal yra kokie patiesiami kilimėliai kad nereikėtų po remonto daryti vėl remontą

    • Sveiki, Stanislava.

      Tokio sprendimo savo kataloge neturime.

Leave a Reply

Your email address will not be published. Required fields are marked *

Categories
We recommend
Devinera
2026 © DEVINERA. All rights reserved.