Underfloor heating under tiles: which to choose and how to install

Tiles and porcelain stoneware are the best coverings for electric underfloor heating: they conduct heat well, are resistant to heating, and heat up quickly. Let's look at which underfloor heating to choose for tiles and how to install it correctly.

Why tiles and underfloor heating are a perfect match

Ceramic quickly transfers heat into the room and has no temperature limitations, unlike, for example, laminate flooring. Therefore, underfloor heating works most efficiently under tiles—and this solves the main problem with tiles: without heating, they are always cold to the touch. This is why underfloor heating is most often installed in the kitchen, bathroom, and hallway, where tiles are laid.

Mat or cable under tiles

Both options are suitable for tiles; the difference is in the installation method:

• Heating mat is the simplest option. A thin mat is laid directly into the tile adhesive layer, hardly raising the floor level. Suitable for renovations and flat rooms of simple shapes.
• Heating cable is laid in a screed or a thick layer of adhesive with the required spacing. Provides more flexibility for rooms of complex shapes and large areas.

For most apartments, a heating mat is the easiest, while a heating cable is suitable for installation in a screed.

Temperature and thermostat

Tiles can withstand any operating temperature of underfloor heating, so there are no strict limitations like with laminate. For comfortable heating, a surface temperature of about 26–29 °C is usually sufficient. To maintain it and save electricity, a thermostat with a floor sensor is needed.

How to install: step by step

1. Prepare a flat and clean base; if necessary, prime it.
2. If desired, lay thermal insulation so that heat goes upwards, not into the floor slab.
3. Distribute the mat or cable over the usable area, avoiding areas under furniture and plumbing fixtures.
4. Install the thermostat and route the floor sensor in a corrugated tube between the cable loops.
5. Check the resistance and operation of the system before laying tiles.
6. Lay tiles on tile adhesive over the mat or cable. The underfloor heating can only be turned on after the adhesive has completely dried (usually several weeks—see adhesive manufacturer's recommendations).

Conclusion

Electric underfloor heating is the optimal solution for tiles: tiles conduct heat well and are resistant to heating. For renovations, a mat is easiest; for screeds, a cable; and a thermostat with a floor sensor is essential. Let us know the room area—we'll help you choose a kit. Delivery across Tashkent and all of Uzbekistan.