This Is How It Works: Installing Underfloor Heating with Dry Screed Panels

Installation instructions

The underfloor heating with pre-fabricated dry screed panels is a system kit that has been put together for particularly easy, quick and clean installation. Installation is carried out in accordance with dry construction standards. The 10 mm PE-RT heating pipes for the underfloor heating are inserted into the pre-milled screed panels. Finally, the underfloor heating is integrated into the existing heating system using the RTL box supplied.

The installation of the drywall system is simplified by the use of special plug-in connectors for PE-RT pipes, making our underfloor heating kit suitable for DIY enthusiasts. The main installation steps are illustrated below using an example installation of approximately 6 m². The kits are supplied with detailed installation instructions.

DIY installation of underfloor heating in drywall construction

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

At last

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.

FLEXIRO wishes you every success!



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.