Tips for different rooms and floors

  • Tips for different rooms and floors

Underfloor heating can heat anything from a small bathroom to a whole house and we have alternatives that can always give you comfortable floors. But there are various things to take into account, depending on conditions, subflooring and flooring materials.

The output needed for different rooms varies. Generally speaking, a tiled or stone floor needs more underfloor heating output than wood or laminate flooring. Another guideline is that small areas need a bigger output per square metre than large areas. A room's insulation and the number of outer walls also make a difference. The output can be increased or decreased depending on how close together the heating cables are laid. If you are not sure about the output you need, it is a good idea to choose a high output, because you can always turn it down with the thermostat. It is control with a thermostat that decides how much electricity is used and not the installed output.

Type of floor/room Recommended output
Tile/stone 110-120 W/m²
Wood, laminate, plastic 65-75 W/m²
Outside/outhouses 130-160 W/m²

Tiled/clinker floors

Tiled or stone floors are common in hallways, kitchens and bathrooms. The good heat conducting properties of these floors means that without underfloor heating they feel cold to us. But it is precisely this heat conducting property that quickly leads the warmth from underfloor heating into the whole floor. The better the insulation underneath the floor, the better (and more energy-efficient) the heat distribution. That is why we recommend that you always install a system with our insulation boards for underfloor heating, even if your home is well insulated. A particularly good choice for tiled floors: Cable Kit 300 + Cable Board

Bathrooms

Remember that wet rooms must always have a good sealing layer under the floor, whether you have underfloor heating or not. The underfloor heating is always laid under the sealing layer, so that it is in the dry part of the floor. There are clear industry rules that must be followed for wet room work and sealing layers. 

Cellars

Here it is especially important to insulate properly when installing underfloor heating. Our modern insulating boards are effective, thin and flexible. They ensure that the heat is reflected upwards and exclude the cold from below. They also prevent so-called reversed moisture flow. Laying underfloor heating directly on top of a concrete floor in an uninsulated cellar is not a good idea. The heat disappears down into the concrete and your energy consumption increases. A particularly good choice for cellars: Cable Kit 300 + Cable Board

Outdoor areas

Underfloor heating is an excellent way of extending the season on your patio. It gives good heat distribution with fewer floor-level draughts and compared with infrared heaters you get a more even heat wherever you sit. A heating cable can be embedded in a new floor or set in filler on an existing one. Remember that outdoor heating sets more demands on the underfloor heating system than indoors. Above all, for sufficient heat you need a higher output, about 130-160 W/m². A particularly good choice for outdoors: Multiflex 20

Wooden floors

Heating under wooden floors also works extremely well, in a lounge or bedroom for example. Our Foil Kit underfloor heating solution is specially designed for wooden floors and works equally well under linoleum in dry rooms. It adds very little height and has an output that is suited to more sensitive wooden material. Recommended output under wooden floors: 65 W/m².

Our thermostats have built-in protection against overheating. Avoid laying thick carpets, mattresses or the like on the floor for long periods, because these block the heat and risk drying the floor out. Beech and maple are particularly sensitive to changes in temperature and moisture. Other types of wood may be a better choice. A particularly good choice for wooden floors: Foil Kit


The underfloor heating guide will help you to make the right choice

If you would like help in choosing the best heating solution for your needs, our underfloor heating guide is a useful tool