Install Underfloor Heating

Thermonet and Tyco Raychem underfloor heating both work very well with all types of ceramic and stone-based floor surfaces, since these offer minimum resistance to heat transfer. The normal surface temperature of ceramic floor surfaces is slightly lower than room temperature, which is often 20-30 degrees less than body temperature. This results in the floor felling very cool to the touch. Underfloor heating removes this chill and brings the floor temperature to a comfortable level.

How to Install Thermonet Underfloor Heating

Step 1: Unroll

Start laying your mat nearest to the thermostat location. Unroll it with the yellow wire down.

Step 2: Cut

When you reach the end of your first run, separate the yellow heating wire from the blue mesh at the loop ends. Use a utility knife or scissors to cut the blue mesh to size. NEVER CUT THE YELLOW WIRE!

Step 3: Repeat

After cutting mesh, the next run can be at any angle. Curves or angles can also be accommodated by detaching the yellow heating wire from the blue mesh, and just laying the wire independently. Long lengths of Thermonet heatmat can be cut and turned any number of times.

Step 4: Done

After positioning, Thermonet should lie flat. Now, you are ready to trowel your tile thinset or floor leveling compound over the heating mat and then lay your flooring material. To ensure even heat distribution, the self-leveling floor compound should be a minimum thickness of 3/8″. Allow the self-leveling floor compound to cure. Then, the floor of your choice can be installed in the normal manner.

Use the button to download the complete installation guide (PDF) for step-by-step instructions.

How to Install Tyco Raychem Underfloor Heating

Step 1: Membrane

We highly recommend first installing an isolation membrane in order to isolate the heating layer from the substrate. We recommend Dural Durabase CI as the best underlayment.