Infrared heating film under tiles for warm and cozy flooring.

Installing Infrared Heating Film Under Tiles

How to Install Infrared Heating Film Under Tiles: A Complete Step-by-Step Guide

Installing infrared heating film under tiles is an efficient way to add comfort and warmth to your home.
In this guide, we’ll walk you through the installation process step-by-step to ensure your system is correctly installed and performs at its best.

Why Choose Infrared Heating for Underfloor Heating?

Infrared heating is an energy-efficient and effective solution for modern homes.
Unlike traditional systems, it provides even heat distribution without bulky radiators.

Here’s why infrared heating is ideal for underfloor installations:

  • Saves energy by directly transferring heat to objects and people.

  • Eliminates bulky radiators for a cleaner, minimalist design.

  • Delivers consistent warmth for tiled surfaces — perfect for bathrooms and kitchens.

Materials and Tools You Will Need

  • Infrared heating film kit

  • Tile adhesive (compatible with underfloor heating)

  • Insulation boards (e.g., XPS boards or thermal underlay)

  • Moisture barrier (if necessary)

  • Thermostat and temperature sensors

  • Tiles and standard tiling tools (trowel, spacers, etc.)

  • Multi-meter (for electrical testing)

  • Scissors and utility knife

  • Electrical connectors and insulation tape

Step-by-Step Installation Guide

1. Prepare the Subfloor

A clean, dry, and level surface is essential for efficient heat transfer.
Remove any debris and check for moisture.
If installing over concrete, apply a damp-proof membrane to protect the heating film.

2. Add Insulation for Infrared Heating

Install thermal insulation boards to reduce downward heat loss.
Secure them with adhesive or screws, making sure they are evenly placed across the floor.

In addition, proper insulation improves system efficiency and reduces running costs.

3. Lay the Infrared Heating Film

Roll out the infrared heating film over the insulation boards.
Cut the film to size using the pre-marked cutting lines — never cut into the active heating elements.

  • Arrange the film without overlapping.

  • Maintain a gap of at least 50mm (2 inches) from walls.

  • Avoid placing heating film under heavy furniture to prevent hotspots.

4. Wire the Heating Film

Connect the wires to the heating film using the connectors included in the kit.
Be sure to follow the wiring instructions carefully.

  • Insulate all connections using electrical tape or heat-shrink tubing.

  • Keep all connections secure and protected.

5. Install the Thermostat and Temperature Sensor

Place the temperature sensor in a central location between the heating elements, just beneath the tiles.
Wire the thermostat and sensor according to the manufacturer’s diagrams.

Therefore, you can easily control and regulate the system once it’s active.

6. Test the Heating Film

Before proceeding, use a multi-meter to test for continuity and ensure the film is working correctly.
Testing now helps avoid costly repairs or rework later.

7. Apply a Protective Layer

Cover the heating film with a protective membrane or a thin layer of self-leveling compound.
This layer shields the film during tile installation and ensures even heat distribution.

Moreover, it creates a stable surface for laying tiles.

8. Install Tiles Over the Heating Film

Use a flexible, heat-resistant tile adhesive to install tiles directly over the protective layer.

  • Apply adhesive evenly using a notched trowel.

  • Lay tiles carefully, ensuring proper spacing and alignment.

  • Allow the adhesive to cure fully according to the manufacturer’s instructions before activating the heating system.

9. Final Testing and Setup

After curing, perform a final test of the system to confirm everything is operating correctly.
Then set up your thermostat to enjoy efficient, comfortable underfloor heating.

FAQs About Installing Infrared Heating Film Under Tiles

Q: Can infrared heating be used under any type of tile?
Yes! Infrared heating film works well under ceramic, porcelain, and stone tiles.
Always use adhesives designed for underfloor heating systems.

Q: Is infrared heating expensive to run?
No. Infrared heating is highly energy-efficient and typically uses less power than traditional systems.

Q: Do I need an electrician for installation?
While you can lay the heating film yourself, a qualified electrician must connect the system to your electrical supply for safety and compliance.