Do You Need Underfloor Heating Under Tiles?

When tiling your floor, do you need underfloor heating? There are several types of heat pumps you can choose from. One of the most common is an air source heat pump, while another is a ground source heat pump. Depending on your needs and your budget, these can be very expensive and can make your flooring too cold or too warm. But there are benefits to having both from vloerverwarming. Here are some of them.

Subfloor preparation

When installing underfloor heating, subfloor preparation is an essential step. Preparation for this type of flooring will help you achieve the best results and reduce the risk of complications. The type of prep work required will depend on the subfloor’s age and condition. For instance, if your subfloor is made from different-height floorboards, sanding will likely be necessary. If you notice serious flaws in your floor, consider putting down a self-leveling cementitious product or a premade 1/8″-1/2″ cement board. Concrete slabs with cracks should also be repaired and isolated with a filler or an isolation membrane. Lastly, damp floors and those with mold or mildew should be removed. If your floor is too weak to support the heating system, it may require structural work.

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When preparing the subfloor for underfloor heating, it is important to consider the relative humidity of the area. A concrete or screed subfloor must not have a relative humidity higher than 85 percent. To avoid this problem, install a layer of Junckers Liquid Moisture Barrier before gluing the subfloor. The data sheet C1.3 contains more information about this step. Once the subfloor is ready, it is time to apply the levelling compound.


Underfloor heating cables can be installed under thick tiles, flagstones, or 20mm sand and cement with SBR additive. These systems are also suitable for amtico and wooden floors. Before laying underfloor heating cables, check for good insulation. Good insulation is necessary to maximize heat output and minimise downward heat loss. Also, make sure the cable is not cut, as this can compromise the effectiveness of the heating system.

The cables of underfloor heating should be run through the floor, with the sensors being placed in the right places. The thermostat must be plugged in and a power point should be located close by. The installation instructions should include the sensor installation process. Once the installation is complete, install the thermostat and the mats. The cables should end below the level of the mat. The cable should reach the power point of the system. It should then be plugged in and switched on.


If you have tiled floors in your home, you may want to consider installing underfloor heating under your floor. This innovative heating system works in tandem with your existing radiator system to take the chill off tiles. Running two different heating systems can be costly, and you can opt for underfloor heating as the sole source of heat in the room. You can also choose to install a combination of underfloor heating and radiators to ensure that you are adequately heated in the coldest months.

Underfloor heating under tiles can be a cost-effective and environmentally friendly option to warm your home. Tiled floors are natural heat conductors and radiate heat rapidly and evenly. Underfloor heating under tiles makes it easier to control your heating costs, save space on your walls, and improve the comfort level of your home. The beauty of underfloor heating is that it can be installed in any room, regardless of the size.

Tiling over underfloor heating

When tiling over underfloor heating, you need to be aware of a few important tips. The sub-floor must be level, and you should use a decoupling membrane to avoid cracking. You should use a high-quality underfloor heating system such as Novus underfloor heating to lower your energy costs. Porcelain floor tiles are particularly good choices, as they have good conductive heat properties, can withstand the daily wear and tear of a house and have a beautiful aesthetic.

First of all, you should check your UFH temperature. If it is too high, you should reduce the heat, otherwise the tile adhesive may not be fully set. Also, you need to apply a self-levelling compound that is flexible. Finally, you should turn on your underfloor heating after seven days to ensure that the adhesive is set and doesn’t crack. Tiling over underfloor heating is a great way to make your home more energy-efficient, as it doesn’t overheat and is able to reach the temperature you set on the thermostat.