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Your guide to electric underfloor heating mats

Your guide to electric underfloor heating mats

During the last ten years the popularity in electric underfloor heating has risen significantly in the UK. ThermoSphere have covered what you need to know in this quick guide to electric underfloor heating mats.

Types of electric underfloor heating systems

There are a wide variety of electric underfloor heating systems to choose from. But before you choose one, consider the project. The specification of the project will depict what type of underfloor heating you need. For example, in-screed heating cables tend to be more readily used in new build or extension projects where the cable can easily be installed in the screed layer in the building phase. If you plan to use in-screed heating cable as a heating source, ThermoSphere would recommend using it off peak to ensure greater energy efficiency. In-screed electric heating cable can take longer to install compared with electric underfloor heating mats, so that’s why ThermoSphere would recommend using a pre-spaced fixing profile for an easier and more secure cable installation.

An alternative to the in-screed cable are electric underfloor heating mats. They are easy to install and great for both new build and retrofit projects. Just take the mat out of its packaging and roll out on to the sub floor. The pre-spaced cable within the heating mat means that the work has been done for you so no need to worry about measuring cable spacing. Simply choose what wattage is right for your project. The higher the wattage, the faster the heat-up time. For example 200W/m2 is most commonly used in conservatories because they are more susceptible to heat loss. 100W/m2 electric heating mats are typically used when you require a secondary heat source or have a highly insulated property where heat loss is never going to be an issue.

Three simple steps to choosing the perfect electric underfloor heating mat

1. How much underfloor heating do you need?

Total size of the floor (m2) – Area taken up by units (m2) = Total required It is important to remove any m2 of a room that has fixed units such as baths, toilets, sinks and kitchen cupboards. If you do lay underfloor heating under these types of fixed furniture your electric underfloor heating system runs a high risk of failing. This is because they act like an insulating layer and the cable will continue to overheat because the heat generated has nowhere to go.

2. Select your heating system based on the floor and room type

There are electric underfloor heating mats for every type of floor finish. If you are finishing your floor with either tile or stone then ThermoSphere Membrane or ThermoSphere Mesh is an ideal choice. However, if you are wanting to create the perfect level of warmth for a wet room, then ThermoSphere would recommend ThermoSphere Membrane. The tanking process ensures the wet room remains watertight for the life of the tiles with the added benefit of ThermoSphere Membrane being waterproof and coming with an IP68 rating.

If a wood, carpet or vinyl floor finish is what you have in mind then ThermoSphere Foil would be the choice. This fully earthed electric underfloor heating mat is the most advanced and safest available and most commonly used in non-tiled rooms such as the much loved living room.

3. Choose an electric underfloor heating thermostat

Being able to effectively control your electric underfloor heating system is paramount to getting the best out of it and reducing energy waste. When sourcing an underfloor heating thermostat make sure to look out for Lot 20 compliance. This piece of legislation came into effect in 2018 and is specifically for electrical heating products to help reduce environmental impact and help consumers achieve energy savings. Fundamentally the more energy saving features an underfloor heating thermostat has, the greater the compliance with the Lot 20 legislation.

For example, ThermoSphere's Programmable Thermostat has features which include:

- Flexible scheduling
- Automatic open window sensor
- Energy saving adaptive start

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ThermoSphere

ThermoSphere

ThermoSphere transform spaces into environments of pure comfort for anyone to enjoy. They maximise available living space and help create healthy, affordable, energy-efficient places in which to live, work and play.

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