Heating mat DANFOSS 140F0452 — 150 W/m², 5.0 m² underfloor heating mat

DANFOSS heating mat 140F0452 is a pre-assembled electric underfloor heating mat with an output of 150 W/m² and a total coverage area of 5.0 m². The mat is engineered for installation beneath tile or natural stone coverings and provides uniform surface heating suitable for residential and commercial interiors. Its slim construction and factory-mounted heating cable simplify retrofit projects and new builds, enabling predictable heat output and stable floor temperatures when paired with appropriate floor sensors and a compatible thermostat.

Advantages

The DANFOSS heating mat delivers consistent, evenly distributed heat across the covered floor area and is designed for quick installation thanks to its pre-spaced cable fixed to a fibreglass mesh. With a rated power density of 150 W/m² it offers effective local heating for areas that require rapid warm-up or higher floor temperatures under stone or tile. The product is suitable for embedding in thinset or self-levelling compound, allowing close contact with the floor covering for efficient heat transfer and reduced thermal mass compared to thicker floor heating systems.

Suitable for

• Bathrooms and wet rooms under tile or natural stone
• Kitchen floors with ceramic or porcelain coverings
• Renovation projects where low-profile heating is required
• Small to medium commercial spaces requiring local floor heating

Key specifications

• Rated power density: 150 W/m²
• Coverage area: 5.0 m²
• Application: under tile and natural stone floor coverings
• Construction: heating cable pre-mounted on fibreglass mesh (pre-assembled mat)
• Installation method: embedded in thinset or levelling compound
• Suitable floor build-up: thin adhesive bed or cementitious screed

How to use

Install the DANFOSS heating mat on a clean, dry and level substrate following local electrical regulations and the manufacturer’s installation instructions for floor preparation, fixing and jointing. Unroll and position the mat to cover the intended floor area without overlapping the cable. Trim and fold the mesh only, never cut the heating cable itself. Embed the mat in a suitable layer of tile adhesive or self-levelling compound, ensure full coverage and allow the compound to cure before laying the final tile or stone covering. Connect the cold lead to a compatible thermostat and earth leakage protection device; electrical connection should be performed by a qualified electrician.

Usage recommendations

Use a floor temperature sensor for accurate control and to prevent overheating of floor coverings. Match the mat installation to the recommended adhesive or compound and observe curing times before commissioning. For areas with high thermal conductivity (natural stone), set control parameters to prevent excessive floor temperatures and optimise energy use.