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Underfloor Heating FAQ

  • How long does wet underfloor heating take to warm up?

    How long does wet underfloor heating take to warm up?


    Wet underfloor heating typically takes 1–3 hours to warm up, depending on the floor construction, screed thickness, insulation, and floor covering.

    Tile and stone floors usually transfer heat faster than carpeted floors. Underfloor heating is designed to provide steady, consistent heat, and it is usually run for longer periods, rather than switched on and off like radiators.

    Underfloor heating takes longer to warm up than radiators because it has a high thermal mass. While radiators quickly heat the surrounding air via convection, underfloor systems must first heat a thick layer of screed or flooring material before that warmth radiates into the room.

    However, this dense thermal mass is exactly what makes it so efficient. Once the floor reaches temperature, it retains and distributes heat evenly for hours with minimal energy input. Because it covers a massive surface area, it only requires water heated to around 29°C—compared to a radiator’s 70°C—significantly reducing your boiler’s workload and lowering running costs.

    If you would like a quote for your project or you are thinking of swapping over your old radiator system to underfloor heating, click the quote button below and we’ll look forward to hearing from you!

  • Is Underfloor Heating expensive to run?

    Is Underfloor Heating expensive to run?


    Wet underfloor heating systems are usually cheap to run and can cost less than radiators, especially in a well-insulated home.

    Underfloor heating systems are significantly more efficient than a traditional radiator systems. Radiators need water heated to high temperatures (around 70°C to 80°C) to effectively warm a room, which demands significant energy from your boiler.

    In contrast, underfloor heating covers a much larger surface area, and only needs water heated to a mild 29°C to achieve the same comfortable room temperature. This substantial drop in required temperature means your heat source works less, consuming less fuel and lowering your energy bills.

    Furthermore, it distributes heat evenly across the entire room, eliminating cold spots and energy-wasting drafts.

    Actual running costs depend on insulation, energy prices, and how the system is used.

    Get in touch if you are interested in a free quote for your home

  • Can I have Carpets with Wet Underfloor Heating?

    Can I have Carpets with Wet Underfloor Heating?

    Do carpets work well with UFH?


    Yes, carpets can be used with wet underfloor heating but with a few considerations.

    Thicker carpets and underlays reduce heat transfer, making the system less efficient and lowering heat output. 

    Thinner carpets and those with lower tog ratings perform much better and transfer more of the heat from the system into the room, resulting in a warmer property and more efficient setup.

    If you would like to know what other floor coverings work well with underfloor heating click here

  • What flooring works best with Underfloor Heating

    What flooring works best with Underfloor Heating

    Which floor covering should you choose?


    Porcelain or Ceramic Tiles are generally regarded as the best floor coverings for use with underfloor heating systems and conduct heat exceptionally well. They don’t block heat; instead, they act like a sponge, soaking up the heat from the underfloor heating pipes below and transferring it quickly into the room. These type of tiles also have no heat limit and can be used at any temperature without warping, cracking or discolouring.

    Natural Stone, Engineered Wood, and Luxury Vinyl Tiles (LVT) also work well IF rated for underfloor heating. We would never recommend using any flooring products that are not rated for underfloor heating usage, as there is no way to know if these are suitable and/or safe.

    Carpet can be used as a floor covering on top of an underfloor heating system, however, it should have a low combined tog rating (carpet + underlay) to avoid reducing heat output and efficiency. The tog rating will directly affect how much heat is transferred into the room from your heating system.

    If you have any questions feel free to give us a call any time and one of our heating experts will be happy to help you.

  • Do I still need radiators with wet UFH?

    Do I still need radiators with wet UFH?


    A properly designed wet underfloor heating system can usually heat a whole home without radiators, especially in well-insulated properties.

    There are some reasons that a property may need radiators as well as underfloor heating for example:

    If you plan to install underfloor heating in a certain area (such as a ground floor or a bathroom), then it would be recommended to keep the radiators on the remaining floors / areas.

    If you plan to install underfloor heating throughout all areas of the property then the radiators are superfluous and can be removed.

    The removal of radiators from your home can immediately make the space look much more modern and also more functional with more useable space.

  • Should my Underfloor Heating be left on all day?

    Should my Underfloor Heating be left on all day?

    There are a huge number of benefits to installing and using underfloor heating in your home. Firstly it gives you greater control over which rooms receive certain levels of heat at certain times of day, and secondly it provides energy efficient, direct heat as and when you need it.

    This can be time and temperature controlled using a programmable thermostat that connects to your heating system.  However, on particularly cold days, you may be tempted to leave your underfloor heating to run for the majority of the time – but just how safe is this to do, and is it recommended?

    With a quick and straightforward upgrade, your Underfloor Heating system can be controlled by your smartphone from anywhere in the world. This gives you the ability to control the temperature of your phone anywhere, any time. 

    Is it ok to leave my underfloor Heating System switched on all day?

    Relax! Leaving your underfloor heating on all day won’t cause any harm to your system.

    Leaving your underfloor heating system switched on all day during particularly cold seasons won’t cause any harm – in fact, it’s not a bad idea. Leaving your heating on will encourage faster efficiency and warming up times, meaning that you are less likely to feel chilly for longer.

    There is a big misconception of this method when using underfloor heating which is why programmable thermostats with underfloor heating go hand in hand. Our underfloor heating systems are made entirely from the highest quality materials.

    A well built underfloor heating system can be left on all day with no issues, if anything it can be better for your house and property to be kept at an even temperature. You can buy DIY underfloor heating kits here from our online store and get everything you need delivered to your door.

  • What types of flooring work best with underfloor heating?

    What types of flooring work best with underfloor heating?

    What are the best types of floor coverings for underfloor heating?

    There are many different floor coverings available. This article will discuss the basic 5 to give you information about suitable flooring for your underfloor heating. If you require any information on specific floor coverings please Contact Us or speak to the manufacturer directly.

    Underfloor Heating with Engineered Timber Floor

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     Engineered timber floors work well with underfloor heating. These timber floors will need acclimatising to the room so they do not shrink after the heating is turned on, these floors should have a low moisture content and should not exceed 22mm in thickness. These floors can be screwed to timber battens or glued to screeded floors and the floor temperature must not exceed 27°C. Please check with manufacturer guidelines.

    Underfloor Heating with Carpet

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    Carpet can work with underfloor heating but is not the best method. The TOG rating of the carpet and underlay together should not exceed 1.5 TOG.

    Underfloor Heating with stone base floor coverings

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    Marble, Slate, Limestone, Polished Screed, Flagstones & Ceramic Tiles These floor coverings work best with under floor heating because they are made of the most thermally conductive materials which means the heating transfers easier & quicker. These coverings should be laid with no air gaps (Laid on full beds). The thickness of these floor coverings will have no effect on the output of your under floor heating but may slow down the warm up times.

    Underfloor Heating with laminate

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    Laminate floors works well over underfloor heating in screed and timber floors. The use of insulating underlay will delay or hamper the transfer of heat into the room. It is recommended to lay a non insulating underlay usually a plastic film of about 0.2 mm thick. Please check with manufacturer for recommended fitting methods.

    Underfloor Heating with Lino and Amtico

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    Lino and amtico floors work well with underfloor heating because can be installed over concrete, timber and Brio board floors. You might need to install a floor sensor so the floor temperature is kept under a comfortable 27 degrees. Please check with manufacturer for recommended fitting methods.

    For a free, no obligation quote simply click the button below. We can also offer advice and answer any underfloor heating related questions you have along the way.

    Get a Free Quote
  • How does underfloor heating work?

    How does underfloor heating work?

    If you’ve been looking into installing underfloor heating, having heard of all the fantastic benefits it can do for the warmth of your home, then you’ve no doubt already started considering how Underfloor heating works?  The answer is that it’s fairly simple – while on the face of it underfloor heating can be new territory to anyone used to a simple boiler and radiator system, but it is in actuality very easy to install and understand once you’ve been pointed in the right direction.

    Will Underfloor Heating Work with my Current Heating System?

    The good news is that underfloor heating can work with any heating system that exists within your home, regardless of age – meaning that it’s extremely versatile.  Warm water is pumped through from either your heat source e.g. Boiler and is forwarded to a central manifold. 

    The manifold’s job is to mix both the warm water being pumped to it and cooler return water from the floor heating, making sure that the temperature stays relatively level between 30 and 65 degrees. This mix of water is then pumped throughout the lengths of pipe beneath the floor, allowing the area to become continuously warm for as long as you have your thermostat switched on. 

    This allows the system to simply work like that of a large low temperature storage radiator.  Depending on the size and shape of the room in question, you can have multiple loops of pipe beneath your floor, though this will be an option available to you once you are clear on your dimensions!

    From there, the floor will be able to absorb the warmth from the piping beneath, allowing your tiles, carpet or wooden overlay to grow warm steadily and within the parameters you set via your individual thermostat. 

    The whole system becomes a large storage radiator and it is therefore able to be used at a relatively low temperature – meaning that unlike many basic radiators that need to be scorching hot to fill a room with warmth, the benefits of allowing the warmth to flow up through the floor means that you won’t normally need to set your starting temperature particularly high to feel the benefits.

    What should be worth noting is that depending on whether you wish to use a ‘wet’ (water based) or ‘dry’ (electricity based) underfloor heating supply, you must always consult the services of a trained plumber or electrician when connecting to a central boiler or electrical supply and using your service. 

    While the underfloor heating we provide is very easy to install and understand, we must always stress the importance of arranging for the relevant professionals to aid you if you are undertake any maintenance relating to these essential supplies within your home.

  • How to control your underfloor heating with a Smartphone

    How to control your underfloor heating with a Smartphone

    Smartphone Controls for Underfloor Heating

    You will be very happy to learn that you can now control your central heating and hot water from free smartphone control apps whether you are at work, rest or play, at home or away. Is your current heating system so easily controllable from wherever you are? Or are you at the mercy of an overcomplicated programmer that you have to go upstairs to adjust when you are home?

    Direct Control over your Heating

    The Heatmiser NeoApp gives you direct, personal control over your central heating timers and thermostats; it doesn’t matter if they are in your sizzling stylish apartment in the city or in your cosy cottage in the country, at the flick of an on-screen icon you can have your underfloor heating revving up while on your commute home or even if you notice it’s turned nippier than normal while out walking the dog on a crisp, Autumn day.

    Using Heatmiser you will save more money than ever because you don’t have to have the heating running on auto-pilot present timers while you aren’t there. Are you presently able to say, hand on heart, that you are in control of how much money you are spending on your heating and hot water? Or is your money trickling through your fingers while your heating is on and you are out? Save money on heating bills and order your Smartphone Enabled Products today!

    On-Demand Heating Control

    Say goodbye to complicated controls where multi zoned systems give you a programming headache. Heatmiser makes all heating programming as simple as a single zone system and gives you easy, on-demand control over up to 32 zones independently: you can put all your heating and hot water in to holiday mode, put all the thermostats into Setback mode.

    You can copy temperature settings from one thermostat to another. Are you currently in control of your heating program like this, or is it in control of you?

    Are you an energy ostrich, with your head in the sand, or are you willing to take charge of the situation? The feel-good factor that will leave you aglow from using Heatmiser in conjunction with UK Underfloor Heating is already well established 

    Call UK Underfloor Heating on 0800 232 1501 or fill in this Quote Form for a free quote today.

    Purchase your Heatmiser Thermostat today to get started on smartphone controlled heating! Here’s what some of our previous clients have to say: 

    “I love how in control of my underfloor heating and energy bills Heatmiser puts me, I save so much money now, which means I get the luxury of toasty-warm feet while also still being able to afford to go on holiday a few times a year!” 
    – Katie Spencer, Marketing Consultant, Hampshire.   

    “Before I had Heatmiser I wasted so much money on my pre-set heating program, just because I was too lazy to change it and had it running for hours at a time when I was out!” 
    – Philip Norton, Banker, London.   

    “The Geo location setting saves me even more money on my energy bills. This setting automatically reduces the temperature when I go to work or the shops, and then raises the temperature when it detects when I’m nearly home regardless of the programmes I have set. This means the boiler isn’t on wasting gas when I’m not home Brilliant” 
    – Amy Askham, Pharmacy Technician, Sheffield.

  • How much does Underfloor Heating cost?

    How much does Underfloor Heating cost?

    Underfloor heating systems can vary greatly in price based on the size of the area to cover. There are numerous cheap UFH kits available online but many of these often contain sub-standard parts and non-branded equipment.

    This sounds like a great way to save money but you can run into a lot of trouble if anything goes wrong, and it can sometimes be impossible to find replacement parts especially for non-branded manifolds and bigger pieces of equipment.

    We always suggest looking around so you are confident in what you are buying.

    An average price for a good quality, guaranteed underfloor heating system is anything from £395.00 + vat for 20sqm.

    CLICK HERE if you would like a free same day quote for underfloor heating in your home.

  • Can I have Underfloor Heating in My Home?

    Can I have Underfloor Heating in My Home?

    A lot of people are unsure whether they can install underfloor heating in their home. The short answer is yes!

    Every property can have underfloor heating in one method or another and do away with those unsightly radiators. 

    Depending on your floor type, water-based underfloor heating can be installed in brand new screeded floors, wooden joisted floors and even over the top of existing concrete floors and floorboards in various systems. 

    This means that no house can’t have underfloor heating, and underfloor heating can be installed in every floor and room of your house. 

    Whether you have all the space in the world, or can only allow the smallest build-up, there is an underfloor heating system that can meet your needs!

    To find out which system would be ideal for your property, click here to contact us today, and let our expert staff show you your options.

  • Which Floor Coverings Can Work With Underfloor Heating ?

    Which Floor Coverings Can Work With Underfloor Heating ?

    When deciding to have water based underfloor heating you may think it isn’t suitable depending on the floor covering you are wanting. 

    However, you might be pleased to hear that most floor finishes can be laid over the top of water based underfloor heating. These include tiles, laminate floors, engineered wood flooring, LVT and even carpet (low tog). 

    Some LVT when using a glue is classed as heat sensitive so will not want to exceed a certain floor surface temperature provided by the manufacturer. If this is the case, we can supply a floor probe to limit the floor surface temperature and prevent any issues. 

    If you are planning on installing a specific type of floor and would like to know if your new floor covering will work with a water-based underfloor heating system, then contact us today by clicking here. 

  • What is Low Profile (overlay) Underfloor Heating?

    What is Low Profile (overlay) Underfloor Heating?

    When referencing a ‘Low Profile’ or ‘Overlay’ underfloor heating system, we are referring to a water-based underfloor heating system that has a minimal height build up for use over the top of an existing floor. 

    This enables water based underfloor heating to be installed in existing properties without the need to pull up the existing floor with a height gain as little as 15mm before the final floor finish (e.g. tiles). 

    There are many overlay underfloor heating solutions suited for different height build ups, floor finishes and heat sources (e.g. gas boiler). 

    Contact us to find out which system is most suitable for your property and get a quotation today. 

  • What is Underfloor Heating?

    What is Underfloor Heating?

    Water-based underfloor heating is the method of heating your property using pipework in the floor rather than using traditional radiators. 

    How does underfloor heating work?

    How it works is that warm water travels through pipework embedded in your floor, transferring its heat into a thermal mass (screed/concrete).

    This heat is then retained in the floor and in turn transferred into the air of your room. 

    By heating the floor rather than the air directly, your room stays warmer for longer, as well as giving a much more even heat distribution. (It is often the case in rooms with radiators that you get cold spots, and two people sitting in the same room can be at completely different temperatures ).

    A key feature of water based underfloor heating is that with the inclusion of the thermal mass the system can run at a lower input temperature from the heat source (e.g. boiler) than with traditional radiators.

    This means that less fuel is used to heat the water when compared to radiators and with the thermal mass retaining the heat it can continuously provide stored heat into the room once the system has switched off and stopped using fuel.

    This is turn saves money on energy costs.

    Click here to see our range of underfloor heating kits and products.

  • Which Underfloor Heating System is the Best?

    Which Underfloor Heating System is the Best?

    When asking which underfloor heating system is best, the main question here is: which is better – water based underfloor heating or electric underfloor heating? 

    A water based underfloor heating system can act as the primary heat source for a property without the need for additional heat from traditional radiators, whereas an electric underfloor heating system will still need traditional radiators to control the air temperature.

    Electric underfloor heating systems although cheaper to install than water based underfloor heating systems are more costly to run due to the high cost of electricity. Water based systems operate at lower input temperatures than traditional radiators so less fuel is required to heat the water to a suitable temperature to heat the room whether this be from a gas, oil or an electric boiler. 

    If you’re planning to install an electric heating system because of the cheaper installation costs, it is important to remember to factor in the cost of the additional radiators, fitting and plumbing and see if this is still a cheaper option.

    If you’d like to browse our complete underfloor heating system packs, just click here.

  • How do I run underfloor heating?

    How do I run underfloor heating?

    Water based underfloor heating can be run in two main ways. 

    Thermostat Programmes

    The underfloor heating thermostats can be set with different times and temperatures to suit your property. For example, the heating can be set to come on at 6am at a temperature of 21 degrees. The next programme at 7:30am is set at 17 degrees whilst the house is empty so that if the temperature outside plummets the heating will kick in and ensure the house doesn’t get cold before the next ON period in the afternoon. 

    Nonprogrammable

    This is when the thermostat is either ON or OFF at a set temperature. For example, if the temperature is set at 21 degrees the system will attempt to achieve this and won’t switch off until either it reaches the set temperature or is turned down at the thermostat.