Underfloor Heating Mat DANFOSS 140F0458 150 W/m², 12.0 m²

The DANFOSS Underfloor Heating Mat 140F0458 delivers electric underfloor heating with a power density of 150 W/m² across a total area of 12.0 m². The prefabricated heating mat is supplied ready for installation beneath tile or other compatible floor coverings to provide uniform radiant heat. The low-profile design is intended for retrofit and new-build applications where a thin, evenly distributed heating layer is required. For reliable operation, the mat should be installed with an appropriate thermostat and sufficient floor insulation.

Advantages

The DANFOSS 140F0458 mat offers even heat distribution across the 12.0 m² coverage area and a consistent output of 150 W per square metre, which supports quick warm-up of tiled floors. As a prefabricated product, the mat reduces on-site installation complexity and helps ensure consistent cable spacing. Its low profile minimizes build-up under floor coverings, making it suitable for renovation projects. Compatibility with standard underfloor thermostats allows temperature control and integration with existing electrical setups.

Suitable for (tasks / use cases)

• Underfloor heating in bathrooms and wet rooms
• Heating kitchens and utility rooms under tile or stone
• Renovation projects where minimal floor height increase is required
• Supplementary floor heating in areas with good insulation

Key specifications

• Heating power density: 150 W/m²
• Total coverage area: 12.0 m²
• Product type: prefabricated electric underfloor heating mat
• Installation format: low-profile mat for embedding beneath floor coverings
• Typical floor coverings: tile, stone and other compatible finishes
• Control: requires a compatible thermostat for temperature regulation

How to use

Prepare the subfloor according to local building codes and the floor covering manufacturer's instructions, ensuring it is clean, dry and level. Lay the DANFOSS heating mat over appropriate floor insulation or a prepared screed, following the supplied layout instructions to avoid overlapping the heating cable. Fix the mat in place and embed it in a thin layer of tile adhesive or levelling compound suitable for electric underfloor heating. Connect the mat to the electrical supply through a compatible thermostat or controller by a qualified electrician and test the system before final floor covering installation.

Usage recommendations

Use a dedicated thermostat with floor and/or ambient sensors, and ensure proper floor insulation beneath the mat to optimize energy efficiency. Confirm floor covering compatibility and follow adhesive or levelling compound guidelines for use with electric underfloor heating. Electrical connections and earthing must be carried out by a certified electrician in accordance with local regulations.