Installing Tile Underfloor Heating

A quick guide to installing underfloor heating.

Items you will need
Floor Preparation

Before you carry out the installation of your new under floor heating system it is vital that you prepare the area first.

  1. Remove old flooring and / or prepare surface of existing floor to accept the installation.
  2. Where possible ensure the floor is completely flat, if required use latex level compound to take out any uneven areas.
  3. Clear the floor of any debris and make sure the surface is clean and dust free.

Installation method for Tile Underfloor heating

Under Tile heating is the most common form of installation when retro fitting underfloor heating. Most commonly this type of heating system is installed in Kitchens, Bathrooms and Conservatories but suitable for all other areas.


        1.  Dry lay your Easy-Heat insulation before sticking it down, this will enable an easier installation knowing all the board are of a snug fit. You can cut the boards with any market brand of sharp construction knife.
        2. When you are happy all the insulation boards are in situ, Mix the flexible tile adhesive as directed on the bag, Using a 3-5mm Notch trowel apply a full spread of adhesive under the insulation boards and press them down firmly so they sit evenly on the floor.
        3. Allow the Adhesive sufficient time to cure before walking on the insulation boards.. See guidelines on adhesive packaging.
        4. Lay out your tile underfloor heating to the desired design or if a plan was provided you can follow that.
        5. Test the heating mats resistance with a multi-meter to ensure they are within range, a resistance chart is provided in the installation manual.
        6. Document the Mat serial number / size / position and resistance on installation chart provided.
        7. Stick the heating mats to the insulation using high adhesive tape provided.
        8. Guide the cold leads (lives and neutrals) to a junction box.
        9. Lay the thermostatic floor probe (provided with the thermostat) in between 2 ribbons central to the floor (Approx 20mm from ribbon element).
        10. Ensure the heating mats and wires are as flat as possible.
        11. Lay the tiles using an 8-10mm Notch Trowel of tile adhesive over the top of the mats to stick the tiles down. Check the mats periodically to ensure there is no damage.
        12. An electrician must make all electrical connections and carry out another resistance check at this point.
        13. Allow 7-14 days for adhesive to fully cure before activating the underfloor heating system.
        14. Your underfloor Heating is now ready to be used, simply switch on and enjoy.

*** In Kitchens, Bathrooms and wet areas an earth mesh may be required. The earth mesh is 0.72mm and laid on top of the heating mats. Full coverage in bathrooms and in front of sink and appliances in kitchen.