IndorTec® THERM-E is an extremely quick and easy to lay electric underfloor heating system. Thanks to having an optimum flat surface, the carrier mat is laid extremely quickly. The special geometry, with 38 % less cavity than alternative systems, provides high energy efficiency. The heating cables are also covered with fillers/tile adhesives without cavities. The geometry of the mat also prevents kinks in the heating cable and makes quick grouting possible with just “one wipe” because of its open structure.


  • Underfloor heating, high-load bonded decoupling and waterproofing for wet rooms in one product.
  • Quick heating of the covering:
    - Because the heating cables are completely covered with adhesive.
    - Because 38 % less air cavity needs to be heated up.
  • Uniform heating cable cross-section, regardless of the length
    and sleeve-less connecting technology are the guarantee of maximum ease of laying and functional reliability.
  • Simple processing
    thanks to optimum flat position and precision engaging of the heating cables in the carrier mat.
  • Time is saved
    since grouting takes place “with one wipe”.
  • Available in a complete set
    All complete - heating mat, cable, thermostat and empty tubes / conduits

Complete system

Produktaufbau IndorTec THERM-E Elektro-Fußbodenheizung | © Gutjahr Systemtechnik

Adhesive for fixing the IndorTec THERM-E mat


IndorTec THERM-E plate


IndorTec THERM-E cable


Levelling / filling compound


Adhesive for the coverings


Multi-layer parquet


Textile and elastic coverings



Brief technical information

Usage area: For heating/temperature control of floor coverings on unheated and heated surfaces
Suitable substrates: • on cracked screed
• on wood substrates and dry screed
• on hollow floors
• on mixed substrates
• on cast asphalt screed
• on fresh cement screed which is still too damp
• on fresh calcium sulphate screed which is still too damp
Substrate requirement: Substrates must be even, pressure resistant, load bearing and non-flexing. For waterproofing damp and wet rooms, the joints/connections must be covered with sealing adhesive and sealing tapes
Coverings • Ideal for large format coverings made from ceramic/natural stone
• In combination with fillers, can also be used with multi-layer parquet, and with textile and elastic coverings
• Coverings such as the ones provided by the covering manufacturer for the respective application area are suitable. The ZDB bulletin that applies to Germany provides orientation
• Covering materials that tend to dish or bulge in the event of one-sided contact with water are unsuitable
Material: Carrier mat: Specially formed, non-rotting plastic film (PP). With fleece laminated onto the underside in the factory.


Instruction manual
technical data sheets
Tender texts