Introduction to Underfloor Heating (UFH)
What better way to start the day than stepping out of bed on to a warm floor? An underfloor heating system will give you a lovely radiant heat throughout the whole house. There are a number of different types of UFH designed for specific installation requirements. Let us help you decide what heating system will work best for your needs.
Types of Underfloor Heating
There are a range of underfloor heating options available to suit different project requirements. Whether the property is a new build, a renovation or a retro-fit there is an underfloor solution for you.
The Greener Group are experienced in the design and installation of the various underfloor heating technologies and understand how to integrate with renewable or traditional heating technology types.
Electric Underfloor Heating – ‘Dry Systems’
- For small and awkward spaces (perhaps bathrooms or oddly shaped bedrooms) loose fit wiring is the best application – for larger rooms (such as lounges and master bedrooms) then electric cable systems or heat mats are best suited.
- When considering the costs, it is important to take into account what is required for the job – a basic package will consist of the heating kit (p/m²), insulation boards, screed (which is a concrete layer to level out the floor) and heating controls, as well as The Greener Group’s fitting costs
- Overall, electric powered systems are cheaper to install but more expensive to run and wouldn’t be recommended for larger areas
Hot Water Underfloor Heating – ‘Wet Systems’
- Wet UFH uses the hot water provided by your boiler or renewable energy system. A circuit of pipes is laid in the floor and heat is delivered through the pipes.
- Because the water is evenly distributed compared to traditional radiator systems, the system can work at a lower temperature and therefore can work more efficiently
- The Energy Saving Trust says water underfloor heating is typically more energy efficient than radiators and therefore less expensive to run. This is because the heat emitted from an underfloor system is more evenly distributed than a single radiator, and so the system can use water at a lower temperature.
New Build / New Floor
What is it?
100mm to 150mm of Kingspan, Celotex or similar insulation board laid on the floor slab. A waterproof membrane sheet is installed on top. UFH pipe then stapled to the insulation to the correct design. 75mm concrete ‘screed’ is then poured over the pipes and left to dry (two weeks to two months). Floor covering then installed on to of screed.
When building from scratch (new-build) or digging up and re-installing a new floor (renovation). This method is often used as it is the most cost effective when a new concrete floor is being installed at the same time.
Renovation / Retrofit
What is it?
20mm (depth) pre-cut UFH boards laid directly onto the existing concrete floor. Can be cut to size for any shape room.
When renovating or extending and re-laying the concrete floor is not an option. The finished floor covering can be applied straight on top of the UFH boards (floor covering dependant). More time consuming to install but less disruptive. Also quicker to heat / cool than traditional screed UFH systems.
Suspended Floor UFH
What is it?
50mm pre-cut UFH boards laid directly in between suspended floor joists. Various sizes available.
When renovating or extending in a property with suspended floors. A plywood layer is required to be installed on top of the suspended floor before applying the finished floor covering.
Did you know you could couple your UFH wet system with a biomass boiler, and not only save money but earn it, through the Renewable Heat Incentive (RHI)? Through the burning of wooden pellets, you could be eligible to receive a tariff from the Government, whilst heating your home and hot water – this can also be used with your UFH system, cutting overall costs (especially if you’re using LPG or oil) and helping you become more energy efficient.
How about using your own generated electricity to power your electric UFH system? A standard 4kw domestic system can generate around 3,500kWh a year (dependant on area), which could all go towards the use of your underfloor heating system – The Greener Group would be happy to come and assess whether this application would be suitable to your heating use patterns.