• 1) Measure Twice and Plan Early

A well organised bathroom reno will take no extra time than one without floor heating, but the benefits are massive. It’s difficult to describe how great a warm bathroom floor is until you have experienced it!


  • 2) Why is Radiant Floor heating so Effective
  • Radiant heating works by heating objects in the room
  • These objects store the heat and then proceed to heat the air
  • As they become hotter, the surrounding air prevents heat loss from our bodies
  • Warmth is generated at your feet and your floor literally becomes your heating system!


  • 3) Know Your Running Costs

The cost of floor heating depends on the type of heating unit or system you use:

  • Floor mats
  • Typically used for the lower end of the cost scale
  • Laid on the floor and plugged into the wall
  • Keep only feet warm and wont heat the room
  • Under carpet heating
  • Also relatively inexpensive
  • Laid before you install your carpet
  • Cost around $24 per month to run
  • Under tile heating
  • Either electric cabling system or think sheets with cabling embedded in them choose the wattage to match the size of your bathroom and the cost are very efficient
  • Heating embedded into a concrete slab
  • Electric but also hydronic options
  • Hydronic is the most expensive to install but running costs are lower

  • How to Install
  • 1) Floor Preparation
  • a) Ensure that the concrete is fully cured
  • b) Ensure that the floor surface is smooth, dry and free from dust
  • c) Start and end points should be at least 50mm apart (maximum 100mm apart)
  • d) Never cross over any of the elements
  • e) Contact you electrician to run the correct cabling


  • 2) Mark Floor for Element Position
  • a) Calculate the actual size of the area to be heated
  • b) Establish the actual element spacings
  • c) Mark start point
  • d) Mark corners and parameters
  • e) Mark spacing intervals
  • 3) Lay out Heating Element and Secure With tape or Cable Tie to Wire Mesh


  • a) Gently unroll the power supply cable from the spool
  • b) Join power supply cable and the heating cable should be taped to the floor at the start point
  • c) Lay out heater wire in parallel lines back and forth across the main body of the area to be heated
  • d) Space and secure wire with tape
  • e) Gauge end result
  • f) Adjust wire spacing if necessary
  • g) Adjust element spacing if necessary – make sure it remains at least 50mm apart
  • h) Carefully pull up element in the wall cavity using the draw wire
  • i) Install floor sensing probe
  • j) Test heater element
  • 4) Cover Heated Element With Screed
  • a) Gently unroll the power supply cable fa) Allow 48 hours before commencing tiling
  • 5) Test Heater
  • a) Check the resistance on the heater and confirm against factory specifications
  • b) Test the heating element
  • c) Connect the continuity tester


  • 6) Test Alarm
  • a) Ensure the batteries are correctly installed
  • b) Test by turning the switch on and ensure the audible alarm sounds
  • 7) Tile
  • 8) Connect Controller
  • a) Once the heater and controller have been installed and the tile adhesive has cured, all electrical wiring and connections must be installed in keeping with current electrical standards. Get your electrician to commission it for you


  • Can You Repair?

The answer is YES!

  • 1) Temperature Sensor
  • a) If the thermostat is dialysing strange readings then the floor sensor could be faulty
  • b) Install a second floor sensor as a backup
  • c) If you do not have a second floor sensor, you will need to replace the first sensor
  • 2) Thermostat
  • a) You can try to reset the clock to the factor settings
  • 3) Underfloor Heating Mat Cable
  • a) If you accidentally break the cable then you need to isolate the break and repair it using a repair kit
  • b) If you do not know the location of the break then you need an electrician!


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