Thinking of installing underfloor heating? You will have many questions. We have the answers to some of the most commonly asked questions right here…

What is the best type of flooring to use with underfloor heating?

The top layer of floor needs to be a material that is ideally a good conductor of heat. In most cases, hard flooring solutions work well. Stone and concrete floors give an excellent performance as they can grab the heat and hold on to it for as long as possible. This contributes to the efficiency of the system.

I prefer carpeted floors. Is carpet compatible with underfloor heating?

Carpet, very much like a duvet, has a TOG rating and for underfloor heating to heat the room effectively, the carpet needs to have a maximum TOG rating of 1.5. This ensure that as the system heats the room, the carpet does not stop the heat from penetrating it.

Why choose underfloor heating?

Underfloor heating has many benefits and advantages;

  • All components are hidden, so there are no radiators on walls allowing you more space in a room
  • It is suitable for all rooms in your home, from the bathroom to the kitchen and beyond
  • It uses less energy to keep a room deliciously warm which means lower heating bills
  • It is a healthier form of heat as it does not dry out the air in your home like central heating can

How much does underfloor heating cost?

The kit

The first cost you will need to bear in mind is the actual underfloor heating system or kit. There are all kinds of kits available, with various lengths of piping and so on so that you have the right size kit for the room or space you are choosing to heat.

ALWAYS choose a kit from a reputable supplier using only the highest quality components.


Again, installation costs vary from one company to another. Check what warranties and guarantees are offered too.

Running costs

As the heat is delivered via lower temperatures, the underfloor heating system uses less energy. This means that running costs are lower, in some cases up to 25% lower.

Over time, the wet underfloor heating system will save you money on your heating bills.

What about insulation?

To get the most out of your underfloor heating system, your home needs to be well-insulated:

  • Sub-floor insulation – when the underfloor heating kit is installed, the sub-floor must be insulated. This stops heat loss into the ground, an important consideration.
  • Around the room edge – some professional installers will also suggest insulation around the edges of the room too.
  • Insulation in the home – to gain the most from underfloor heating, insulation throughout the home needs to be of a high standard. The loft insulation needs to meet current regulation depth of 270mm. If possible, you should invest in double glazed windows and doors, as well as cavity or solid wall insulation too.

How do I control the heat with underfloor heating?

Controlling the heat with this system is similar as you would do with a radiator or central heating system – that is, by thermostat.

Many of the underfloor heating kits will include a standard, digital and programmable thermostat. It needs to be fairly sophisticated as this means you can then get the best out of the heating system.

Some people opt for smart thermostats which can be linked to their mobile phone via an app. This means that you can monitor and control the heat in the home, even when you are not at home.

This is great for turning up the heat ready for when you arrive home from work!

How responsive is underfloor heating?

Of the many FAQs about underfloor heating we are asked, this is the one that crops up on a regular basis.

People are used to flicking the thermostat up a notch or two and the boiler kicking in immediately. More heat is delivered almost immediately to the radiators.

It takes longer for the room to heat with underfloor heating but this is not because the underfloor system is not responding. Underfloor heating has the vast expanse of floor to heat and depending on the flooring material, this can take about half an hour or so before you feel the difference in a room.

However, what people enjoy with underfloor heating is a warm floor and the fact that their house is never cold, but their heating bills are a lot lower.

Why choose Underfloor Heating Supply?

With many years of experience, in-depth knowledge as well as competitively priced kits and products, why would you not choose Underfloor Heating Supply?