How To Install DIY Heated Floors

Are you seeking a warm and cozy touch to your floors this winter? Look no further than the revolutionary Schluter-DITRA-HEAT floor heating cable, setting a new standard for under-floor heating. Whether it's for a bathroom, kitchen, or bedroom, this seamless integration offers efficient and uniform heating that’s perfect for DIY enthusiasts.

Understanding the Schluter-DITRA-HEAT Cable

The Schluter-DITRA-HEAT cable is engineered to integrate effortlessly with the DITRA-HEAT underfloor membrane. Its advanced features include enhanced thickness, simplified installation, and complete waterproofing, setting a new industry benchmark. Primarily intended for tile flooring, DITRA-HEAT is also compatible with alternate floors, such as laminate, engineered hardwood, stone, and vinyl. This cable caters to a variety of rooms and heating requirements with various lengths and power wattages available.

  • Total Power Output: This heating cable generates 405W of total power output, providing efficient warmth for your space.
  • Operational Current: Operating at 2.8 Amps, it‚Äôs an energy-efficient choice for heating solutions.
  • Cable Length: Available in a variety of lengths up to 134 square feet and operates at 120V or 240V, ensuring precise heating for the designated area.

GTD Supply has everything you need to start you need DIY heated floors journey!

supplies needed for DIY heated floors

Supplies Required

  • DTRA-HEAT Heating Cable
  • DITRA-HEAT Underfloor Membrane
  • DITRA-HEAT Thermostat
  • Thin-Set Mortar
  • Utility Knife
  • Trowel (1/4" x 1/4" x 1/4" Square Notch)
  • Sponge

Step-by-Step Underfloor Heating Installation

Step 1: Planning and Layout

Creating a warm, efficient heated floor begins with meticulous planning

  • Square Footage Calculation: Measure the total area of the room and identify spaces where heating isn't necessary, such as beneath vanities or fixtures.
  • Spacing Considerations: Maintain essential spacing requirements‚ÄĒ2 inches from walls, fixed cabinets, toilet flanges, and other structures.

Step 2: DITRA-HEAT Material

Ensuring a seamless installation requires the right materials

  • Schluter's Online Calculator: Utilize the DITRA heat estimator to determine the precise amount of membrane and cable needed for your project.
  • Integration Check: Confirm that the selected membrane integrates flawlessly with the cable for a smooth, efficient heating system.

Step 3: Setting the DITRA-HEAT Membrane

Preparing the foundation for the heating system

  • Thin-Set Mixing: Combine the thin-set mixture and apply it uniformly across the subfloor.
  • Membrane Embedding: Lay the membrane carefully into the thin-set, ensuring comprehensive coverage and a secure foundation.

enjoy the luxury of heated floors

Step 4: Heating Cable Tips

Setting up the heating cable requires attention to detail

  • Dedicated Circuit Establishment: Establish a dedicated circuit for the cable, adhering to electrical standards and safety measures.
  • Testing Procedures: Conduct thorough tests for cable resistance, continuity, insulation, and temperature sensors to ensure optimal functionality and safety.

Step 5: Cold Splice Installation

Installing the cold splice for a seamless floor surface:

  • Positioning: Carefully position the cold splice flush with the membrane to prevent unevenness during tile installation.

Step 6: Cable Installation

Laying out the heating cable systematically

  • Precise Placement: Strategically place the cable, maintaining recommended spacing and considering buffer zones.
  • Adaptation to Room Features: Customize the cable layout to accommodate specific room features like vanities or toilets.

Step 7: Thermostat Installation

Installing and securing your DITRA Heat Thermostat for heated floors

  • Wiring: Follow the manufacturer's instructions precisely while wiring the thermostat, ensuring adherence to safety protocols.
  • Securing in the Electrical Box: Mount the thermostat securely in the electrical box, keeping all connections well-insulated and safe.
  • Testing: Conduct a thorough test to ensure the system operates as expected.

Step 8: Fill Studs with Thin-Set

Completing the final steps for a polished finish

  • Stud Coverage: Fill all studs meticulously with thin-set, ensuring a comprehensive and smooth finish to complete the installation.


These detailed steps set you on the path to creating a cozy, DIY heated floor using the Schluter-DITRA-HEAT cable. This efficient system not only promises warmth but also offers ease of installation, transforming your home into an inviting haven.