How to Install Underfloor Heating

How to install underfoor Heating – Tips

Underfloor Heating installation

Looking for new ways to heat your home? Underfloor heating (UFH) could be the solution underfloor heating from electrician in watfordfor you. As well as an absolute treat for your feet during the cold winter mornings, it’s a great space-saver as well as an energy-efficient way to warm up your household.

There are plenty of benefits of underfloor heating:

• There are no radiators to spoil the clean lines of a room, and space can be saved by freeing up a wall that would otherwise need to be dedicated to a radiator.

• Underfloor heating is also an extremely efficient way to warm a room, and gives a more pleasant heat than radiators, stoves or traditional solid-fuel fires. Heat is emitted in a very gentle way. There are no cold spots and, as most of the heat is concentrated in the lower part of the room, very little heat is wasted.

Underfloor Electric heating mats and underfloor heating wire systems

underfloor heating tipsElectric systems feature cables which are attached to open-weave mesh mats. There are, however, newer types where the elements are embedded into a continuous roll. The mats or rolls are spread out on the floor, connected together and are then linked up to the thermostat and mains power supply.

In general, whilst electric systems are cheaper to install, and cause less disruption to existing floor structure, they are more expensive to run than wet systems, which are more cost efficient.


Systems are most easily installed where it’s possible to take up floors or where new floors are being constructed, so is likely to suit new extensions, conservatories and new open-plan kitchen-cum-living areas.

Hot-water (or wet) systems

Wet systems basically use warm water from the central heating system.

The water is pumped through plastic pipes that are laid on to a sub floor, before the new final surface is installed.

Underfloor heating of this type also reduces water-heating costs as it uses water at a lower temperature than standard radiators (about 40°C to 65°C to give a floor temperature of between 23°C and 32°C).

Underfloor heating is mostly used in ground-floor rooms but, in reality, there is a system to suit any type of floor construction.

Electric underfloor heating is likely to be more suitable for existing rooms as the electrical mesh system is flatter than a wet system so there is less need for floor heights to be altered to accommodate it. There are even electrical mat systems available that can be used under rugs on existing hard floors. On balance, it’s easier to add electric systems to upper-floor rooms.

How to install underfloor heating

For your underfloor heating to be most cost and energy efficient, your property needs to be adequately insulated. To prevent heat loss and to ensure that the heat is directed upwards, there needs to be room for insulation to be installed beneath the system.

What flooring to use with underfloor heating?

Underfloor heating under Carpet

UFH can be used with almost all types of flooring, even carpet, providing that the carpet and underlay have a thermal resistance of less than 2.5 tog. Indications show that, for the majority of carpet styles, the thermal resistance will be less than 1 tog.

Underfloor heating under tiles, Stone, Ceramic, Slate and Terracotta As these flooring materials have become more fashionable, there has been an increase in the number of homes using UFH. Heat-up time depends on the thickness of the tiles. Thick flagstones will take longer to reach optimum temperature, but once this is reached there’s no difference in heat quality between thick or thinner floor surfaces.

Underfloor heating under Timber

UFH is suitable for use with many types of timber flooring, but most installers stipulate that the timber be specifically recommended for UFH use. The flooring should have a top temperature restriction (usually 27°C) and an expansion gap needs to be left around the edges (this is easily hidden by a skirting board or trim). Always liaise with the flooring supplier and heating installer before making your purchase. Many suppliers will recommend a specific brand of electric UFH and it’s a good idea to listen to their advice.

Underfllor heating under Vinyls and underfloor heating under Laminates.

UFH can be used with high-quality vinyls and laminates. However, not all laminates or vinyls are compatible with UFH, so it’s a good idea to check with the flooring manufacturer or the heating installer before committing. Many suppliers have developed their own UFH systems, or have one or two that they recommend.

If you feel competent enough then a DIY installation is possible.

07971 993698=

If you need any advice please feel free to contact me.


Darryl Bertie, How to install Underfloor Heating Tips





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Case Study. New Electrics for Kitchen & Dining Room Installation

I have been here a few days now & have 1st fixed the electric wires for the kitchen. This Kitchen has got a lot of electrics, it has the usual oven, cooker, dishwasher etc, but we are putting in mood lighting, LED’s above & below the counter. (Should look nice), pendant over the centre island, spot light around the kitchen & Diner. Also the boiler got moved so all the heating controls had to moved.

There is a cloak room, toilet and pantry that the electrics for lighting and fans had to be moved about, due to walls being moved etc. We are in talks to see if underfloor heating is to be installed.

Because of the amount of new circuits being installed, a new fuseboard is being installed.

I have taken a short video so you can see the 1st fix of the electrics

Updates to follow

Wired the Fuseboard

I thought you’d be interested to see a job I did a few weeks ago with ‘before and after’ photos. This is a major part of a rewire I’m currently completing at a five-bedroom house in Chiswick.

This is ready for the wires to be dressed and connected to the fuseboard.

All Connected. This is a Hagar 17th Edition fuse board with a main switch and two Residual Circuit Devices (RCD) and Miniature Circuit Breakers (MCBs).