Installing Electric Floor Heating Under Tile: A Step-By-Step Guide

Installing Electric Floor Heating under Tile Floor YouTube
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Are you tired of stepping onto cold tiles in the morning? Installing electric floor heating under tile can change that. Not only does it provide warmth and comfort, but it also adds value to your home. In this guide, we will walk you through the process of installing electric floor heating under tile in your home.

Materials Needed

1. Electric Floor Heating System

The first step is to purchase an electric floor heating system. Look for a reputable brand that offers a warranty and has positive customer reviews.

2. Heat-resistant Thinset Mortar

To secure the heating cables or mats to the subfloor, you will need heat-resistant thinset mortar. Make sure it is compatible with both the subfloor and the heating system.

3. Uncoupling Membrane

An uncoupling membrane acts as a protective barrier between the subfloor and the tile. It also helps to prevent cracks and minimize movement.

4. Digital Thermostat

A digital thermostat allows you to control the temperature of the electric floor heating system conveniently. Look for a programmable thermostat for added energy efficiency.

5. Tile and Grout

Choose the tile and grout that you want to install on top of the electric floor heating system. Ensure that they are suitable for use with underfloor heating.

Step-by-Step Installation Process

Step 1: Prepare the Subfloor

Start by cleaning and leveling the subfloor. Remove any debris and repair any cracks or unevenness. This will ensure a smooth and stable surface for the electric floor heating installation.

Step 2: Lay the Uncoupling Membrane

Roll out the uncoupling membrane over the subfloor. Cut it to size if necessary. Secure it in place using a suitable adhesive or thinset mortar. Make sure there are no wrinkles or air pockets.

Step 3: Install the Heating System

Follow the manufacturer’s instructions to install the electric floor heating system. This typically involves laying down the heating cables or mats evenly over the uncoupling membrane. Secure the cables or mats using the recommended method.

Step 4: Connect the Heating System

Connect the heating system to a dedicated electrical circuit. It is recommended to hire a licensed electrician for this step to ensure safety and compliance with electrical codes.

Step 5: Test the Heating System

Before proceeding with the tile installation, test the heating system to ensure it is functioning properly. Follow the manufacturer’s instructions for testing and troubleshooting.

Step 6: Apply Thinset Mortar

Using a notched trowel, apply heat-resistant thinset mortar over the heating system. Make sure to spread it evenly and at the recommended thickness. This will secure the tile in place and provide good heat transfer.

Step 7: Lay the Tiles

Place the tiles on top of the thinset mortar, starting from one corner. Press them firmly into place, ensuring even spacing between each tile. Use tile spacers if necessary.

Step 8: Grout the Tiles

Allow the thinset mortar to cure according to the manufacturer’s instructions. Once cured, remove the tile spacers and apply grout between the tiles. Use a grout float to spread the grout evenly and remove any excess.

Step 9: Clean the Tiles

After the grout has dried, clean the tiles using a damp sponge or cloth. Make sure to remove any grout residue before it dries completely.

Step 10: Install the Digital Thermostat

Follow the manufacturer’s instructions to install the digital thermostat. Typically, this involves mounting it on the wall and connecting it to the heating system. Set your desired temperature and enjoy the comfort of your newly installed electric floor heating system!


Installing electric floor heating under tile is a great way to add warmth and comfort to your home. By following this step-by-step guide, you can successfully install an electric floor heating system and enjoy the benefits for years to come.