Underfloor Heating:                                                    

Underfloor heating HQ have been selling UFH in the UK for 7 years and our management team have overseen installation projects for The Royal Family, Gordon Ramsay, Anne Robinson, and hotels such as the Savoy, Dorchester and Claridge’s. Although these people and the premises are high profile your customers can enjoy the same luxury UFH products for a very affordable price.

  • Our company is registered as Underfloor heating HQ Limited in the UK.
  • Underfloor heating HQ company number is: UK 08034979
  • Our VAT registration number is: 141926124


1. Underfloor heating explained

Underfloor heating, whether its electric or a wet (system), can be used either to heat an otherwise cold floor, or in the correct circumstances be used as a stand a lone heating system.

The Romans invented underfloor heating figuring it to be the best way to heat a large room without having an intense heat in one area. This is as true today as it was then. When underfloor heating is being used as the primary source of heating, clients may choose to remove, space-intruding radiators.

There are two types of underfloor heating:

Electric heating elements – Electric underfloor heating is usually an electric heating wire that comes in fixed sizes, either on a reel or with the wire fixed onto a mat. Electric underfloor heating comes in various specifications and we’ll go through that in more detail later.

Electric underfloor heating is mostly used in area specific heating, for examples renovations of bathrooms, kitchens and conservatories.

Strengths and weaknesses


  • The beauty of electric underfloor heating is that it’s so thin. Our heating wires are only 2mm thin, so even with a levelling compound spread on top, it only adds 4 to 5mm more depth to a floor.
  • It’s easy to install – Any keen DIY enthusiast can fit the wire or the mats with only the connections requiring a qualified electrician to complete.
  • Rapid response times – You can turn the heating up or down and feel a difference in the heat within an hour.
  • Electric underfloor heating is a direct form of heating as it usually sits just beneath the tiles.
  • Far cheaper to install than wet systems far cheaper to buy than wet systems
  • Ideal for new build or more ideally refurbishment work.
  • all you need is the correct sized under floor heating system, a thermostat and an R.C.D covering the electrical supply.


  • Electric heating is more expensive to run at approximately 2 pence per m2 per hour.
  • Electric underfloor heating is not as good as a wet system under wooden floor finishes as clients cannot have rugs or mats as all of the heat has to come through wood and heat blockages must be avoided.


Water based underfloor heating systems – Water based systems are generally used in new build projects and come in pipe format, with hot water being channelled through the pipes powered by gas.

The pipes are laid under the screed, so they are an indirect heating system. Water based underfloor heating systems are installed usually beneath the screed in new build projects or large extensions. Water based systems are more complicated, less versatile, and are not really DIY products

Strengths and weaknesses – The biggest benefit of a wet system is that gas is cheaper than electricity, so the running costs are lower so it’s ideal for larger projects and new build projects..

The negative is that it is very hard to control the heat either up or down, taking some 4 to 5 hours to feel any difference in the heat.

Far more expensive to install and usually needs far more depth so not really ideal for renovation work.

With the growth in tile sales, people are experiencing the beauty of hard wearing, hygienic, easy to clean, tiles! The only downside is the fact they are cold to walk on, hence the obvious need for underfloor heating.


2. Our High Quality Underfloor Heating

We have been to the factory and specified exactly how we want our product made and to exacting standards. Having been in the industry for over 20 years we know exactly what is good and bad in underfloor heating. Our heating wire is made in China in a state of the art factory and we have carried out all relevant Q & A tests. No underfloor heating company in the UK make their own wire, they all import them and reassemble in the UK.

Our heating wire is only 2mm thin and is made up in the following way.

Single core flexi heating wire – We always used to have multi strand as it used to be more flexible but the new single core wire is equally as flexible and has the added advantage that is a client damages the heating element the fault will show immediately and we will replace free of charge before the tiles are installed.

  1. Flexi heating wire
  2. FEP – Fluoropolymer insulation – In our opinion this is the best  insulation and we have the paperwork that documents this. Our wires can withstand temperatures of 205 degrees C
  3. 6 strand earth braid around the heating wire – An earth braid is far superior to cheaper alternatives like alloy sheaths. Aluminium earthing can if damaged make the mat impossible to repair. Warm Up only have 4 strands.
  4.  Nylon outer insulation – Nylon is far superior to the cheaper fatter online products that use PVC outer layers. Our outer insulation can withstand temperatures of up to105 degrees C

All of our mat systems have our sticky backing that makes installation quick and easy.

USP’S –  Our products are high quality

  • made to a brilliant specification
  • only 2mm thin so comparable to other high quality brands
  • mats have a full sticky backing
  • loose wire comes with self adhesive tape for fast installation
  • lifetime and safety net guarantee
  • echo Wi-Fi voice controlled thermostats
  • technical helpline
  • not sold online
  • can’t be compared against budget 3.6mm thick cables

 All of our heating products have a lifetime guarantee and an accidental damage warranty, so if you cut through the cable we’ll repair or exchange free of charge.

Poor quality products are sold even in some of the largest stores. Our mats have a consistent space between heating wires to produce a uniform heat underfoot.

        Our mat has perfect spacing                                                               Terrible quality on this mat                                                                    Awful manufacturing

3. Now pick the right product for your project

Underfloor Heating HQ have three main products to try and keep it simple for you

Chose from the following –

  1. Loose wire underfloor heating – We recommend these for smaller awkward shaped areas like bathrooms.
  2. Sticky backed 160 watt per m2 mats – We recommend these for floor warming in larger more rectangular shaped areas like conservatories and kitchens.
  3. Sticky backed 200 watt per m2 mats – We recommend these for maximum heat in larger more rectangular shaped areas like conservatories and kitchens.

If using any heating as the only source of heating the room has to be built to modern standards, with insulation in the floor, double glazed etc. Contact us for advice.

To make it easier for you to give the right advice just follow this easy link system below for each room


Bathroom enquiry Kitchen enquiry Conservatory heating under wood or carpet



4. Now you need a thermostat to control the heating.

We have kept our range simple – a state of the art echo voice controlled Wi-Fi thermostat, a programmable thermostat and a manual on/off. Our heating will work with any thermostat designed for use with underfloor heating. Our programmable thermostats have an air and floor sensor. The floor sensor is used for floor warming & the air sensor for air warming.

Wi-Fi Thermostat



Wi-Fi Echo voice controlled stat





7-day Programmable thermostat



7 - Day Programmable thermostat






Manual on/off



Manual on/off thermostat




5. Now work out how much underfloor heating you need.

Size matters –

It is essential to make sure that the correct sized heating system is ordered. Underfloor heating is only installed in areas that don’t have permanent furniture.

Always leave a 10 cm Border around the room when making your calculations.

The example room pictured below is 2.1m long by 3.2m wide, this equals 6.7m² of floor area. However after taking out the furniture the area for heating is only 2.9m2.

You always recommend a size smaller so if they want a mat they would order a 2.5 m2 (NOT A 3) or a 450 watt Warmtoes cable system.

Calculations-for-amps-running-costs –

6. Prices

These are our retail prices, but call our retailers to see what price they can offer you.

Loose Wire Underfloor Heating

Underfloor heating wire


7. Other considerations

Insulated tile-backer boards –  

Insulation boards now can start at 4mm thin and go up to 70mm. If there is no insulation beneath the sub-floor these are an excellent alternative. If installing on a cold uninsulated concrete floor these are almost essential and should really only not be used if the height difference added is to great.

Sizes usually used are 6 & 10mm – Obviously the thicker the board the more insulation you get.

The heating will heat up quicker, hold the heat better and make the system more efficient to run – Highly recommended.



De- Coupling membranes – 

When installing on a wooden sub-floor de-coupling membranes are a very good way to stop movement in the tiles. Our underfloor heating will work with de-coupling mats already on the market.



8. Installing the underfloor heating mats or wire

Installing your Warmtoes loose cable or mat system is very straight forward. Please follow the detailed advice included with each kit.



  • Draw the area and make sure they have bought the right sized kit before you start installing.
  • Test the heating with an electric meter
  • Make sure the floor is clean and ready for the final floor finish. If the sub-floor is plywood they must prime the wood, using a proper tilers primer, not a PVA.
  • Plan where the product will be installed and if it’s a loose cable system plan the spacing between the heating cables using the instruction manual.
  • Install the wire or the mat following the detailed instructions and remember the floor sensor
  • We recommend covering (with a non toothed spread) the heating with a flexible levelling compound before tiling
  • Tile using flexible tile adhesive
  • Fit and program the thermostat
  • Wait 14 days before turning the heating on

Preparation for the electrics

You will have to chase the wall out and install a single deep (35mm) back box to house the thermostat with conduit (min 25mm). You will need to pull the sensor and the connection cables through this.


Our thermostats are 16 amp so you can install the following m2 of each type on each thermostat. You can install more than one mat or wire on a thermostat but it can’t exceed 16 amps.You can install larger areas using a relay/contactor – contact us for advice

Warmtoes cable  = 3600 watts

Warmtoes 160 watt mat = 23m2

Warmtoes 200 watt mat = 18m2

Calculating Amps –  m2 x total watts for the area, divided by volts (240) = Amps

Example – 5m2 200 watt mat = 5 x 200 = 1000 watts total.  Then divide by 240 to get amps, in this case, 4.2 Amps.

Running costs = approximately 2p per m2 at 160 watts and 2.5p per hour for 200 watt

For more advice installing HQ loose cable please click here.

For more advice installing our mat systems please click here.

More technical info:

When installing either system it is very important to test the ohm’s and continuity at the start, middle and at the end of your installation. See how you test underfloor heating.

Always use a part P qualified electrician for any electrical work.

You must have a Residual current device (RCD)

All modern houses have an RCD. Rcd’s are designed to disconnect the circuit if there is any damage to the electricity circuit. RCD’s detect small leakage currents (typically 5–30 milliamperes) and disconnect the power within a millisecond to prevent harm and maintain a safe environment.

Underfloor heating HQ’s electric underfloor heating kits are 100% efficient. The wire will last for the life time of your floor. This makes it not only an amazing value for money product, but also environmentally friendly. The mats are only 2mm thin. You will use far less levelling compound (saving you money) and add hardly any height to the depth of your floor. This product is far better than older, thicker wired systems.


9. What happens if the heating goes wrong?

If the heating is damaged on installation as long as the installer checks the ohms reading (in the instructions) we’ll replace the heating product free of charge.

If the heating fails in the future the products (mats and wires) are covered by our lifetime guarantee and we’ll send an engineer to find (to one or two tiles) where the break is and repair the wire so it’s as good as new. This is very rare and if installed to the instructions this should never happen, but if it does we have it covered.


10. 100% Peace of mind

Our new range offers state of the art 2mm thin underfloor heating at great prices.

Our thermostats have the options of  echo voice control, Wi-Fi or simple manual on/off.

You can buy knowing your getting the best product and the best advice!


11. Contact

If you’re stuck or need any advice call Russell – 0800 772 0752 or weekends 07712 580399[email protected]