How to Install Underfloor Heating with Studded Plates

Installation instructions

FLEXIRO thin-layer underfloor heating with studded panels is a system kit optimised for easy retrofitting of existing heating systems in single rooms such as bathrooms or kitchens. All the necessary components are included in the kit. The use of our flexible 10 mm multi-layer pipe not only provides additional installation options compared to conventional underfloor heating systems, but also ensures a low installation height and extremely even heat distribution.

The installation of the thin-layer heating is simplified by the use of plug-in connectors and RTL boxes for connection to conventional heating systems, making the FLEXIRO kits suitable for DIY enthusiasts. The following instructions illustrate the main installation steps using a test set-up for the studded panel installation variant. A detailed installation manual is supplied with the heating kits.

Installing underfloor heating with studded panels

Planning of the installation
Checking the installation
Completion of the underfloor heating


Despite the simple design of the underfloor heating system and the ease of installation, we must point out that, as the manufacturer, we can only guarantee correct delivery from the factory and not installation and connection by third parties. Please also observe the current standards and regulations for heating systems.

Also watch our animated video to see the main assembly steps.

FLEXIRO wishes you every success with your project!



The Bostik company says yes! However, floating timber structures are not permitted as they are highly susceptible to deformation. Installation is therefore only possible on fixed timber structures, whereby these must be uncoupled. Please contact us for further information on laying on fixed timber structures!

The existing substrate must always be level, clean, dry and load-bearing.

FLEXIRO underfloor heating can be installed on OSB boards. Bostik's instructions clearly state that the OSB boards must be bonded to the substrate. Floating OSB boards are not suitable. The OSB boards must be primed before laying the FLEXIRO underfloor heating. In this case, the pipes should be covered with at least 5 mm of screed.

Due to the installation of the low profile underfloor heating directly below the surface, additional insulation is not required in most cases. This keeps the installation height low. Exceptions are floors above unheated basements and the ground. The requirements of the Energy Saving Ordinance must be observed. Further information on thermal insulation for underfloor heating

The low profile underfloor heating is designed for mounting directly on the existing surface. The modernisation of an existing and already insulated floor usually does not require additional insulation of the underfloor heating. Therefore we only sell special insulation boards for bathrooms and other wet areas. Additional floor insulation can be bought at any specialist store. Once the insulation has been applied, you need to ensure a stable surface before installing the underfloor heating.