Loading...

DIY Retrofit Low Profile Underfloor Heating

Thermal comfort of underfloor heating for existing and old buildings

Our low profile underfloor heating achieves a minimum installation height of 17 mm. The flat construction also allows retrofitting to existing floor surfaces.

Central component of our all-in-one DIY heating kits is a high quality, 10 mm thin PE-RT composite pipe. It is oxygen tight, temperature resistant and flexible to install. RTL technology ensures safe operation even with conventional heating systems with high flow temperatures.

The water-bearing underfloor heating system is connected between the flow and return of the heating system in the same way as a conventional radiator. Existing radiators are either replaced or, as with towel radiators in the bathroom, operated in conjunction with the radiant heating system.

Our DIY kit is designed for retrofitting heating surfaces of up to 10 m². For larger areas, multiple sets can be combined and connected to the heating system via RTL boxes. Low-tool installation, special plug-in connections and detailed installation instructions and videos make it extremely easy to lay the thin underfloor heating system.

Upgrade individual rooms such as the living room or bathroom with low profile underfloor heating. Bring the thermal comfort of FLEXIRO into your home.

O.FR.10
New -10%
Low profile underfloor heating - control unit
Underfloor Heating Kit with Clip Rails - Components for 2.5 sqm
Underfloor Heating Kit with Clip Rails - Components for 5sqm
Underfloor Heating Kit with Clip Rails - Components for 7.5sqm
Underfloor Heating Kit with Clip Rails - Components for 10sqm
Underfloor Heating Kit with Knobbed Mats - Components for 2.5sqm
Underfloor Heating Kit with Knobbed Mats - Components for 5sqm
Underfloor Heating Kit with Knobbed Mats - Components for 7.5sqm
Underfloor Heating Kit with Knobbed Mats - Components for 10sqm
Underfloor Heating Kit 2,5sqm with Clip Rails and Multibox
Underfloor Heating Kit 5sqm with Clip Rails and Multibox
Underfloor Heating Kit 7.5sqm with Clip Rails and Multibox
Underfloor Heating Kit 10sqm with Clip Rails and Multibox
Underfloor Heating Kit 2.5sqm with Knobbed Plates and Multibox
Underfloor Heating Kit 5sqm with Knobbed Plates and Multibox
Underfloor Heating Kit 7.5sqm with Knobbed Plates and Multibox
Underfloor Heating Kit 10sqm with Knobbed Plates and Multibox

Underfloor Heating Kits

from 1 € 239.99 Incl. 19.00% VAT + shipping costs
from 1 € 239.99 Incl. 19.00% VAT + shipping costs
from 1 € 314.99 Incl. 19.00% VAT + shipping costs
from 1 € 379.99 Incl. 19.00% VAT + shipping costs
from 1 € 439.99 Incl. 19.00% VAT + shipping costs
from 1 € 324.99 Incl. 19.00% VAT + shipping costs
from 1 € 449.99 Incl. 19.00% VAT + shipping costs
from 1 € 579.99 Incl. 19.00% VAT + shipping costs
from 1 € 659.99 Incl. 19.00% VAT + shipping costs
from 1 € 289.99 Incl. 19.00% VAT + shipping costs
from 1 € 364.99 Incl. 19.00% VAT + shipping costs
from 1 € 429.99 Incl. 19.00% VAT + shipping costs
from 1 € 489.99 Incl. 19.00% VAT + shipping costs
from 1 € 374.99 Incl. 19.00% VAT + shipping costs
from 1 € 509.99 Incl. 19.00% VAT + shipping costs
from 1 € 629.99 Incl. 19.00% VAT + shipping costs
from 1 € 709.99 Incl. 19.00% VAT + shipping costs
  • kit size
    Please select kit size
  • installation method
    Please select installation method
  • control unit
    Please select control unit

Article no.: O.FR.10

Article no.: O.FR.10.1.R

Article no.: O.FR.10.2.R

Article no.: O.FR.10.3.R

Article no.: O.FR.10.4.R

Article no.: O.FR.NP.10.1.R

Article no.: O.FR.NP.10.2.R

Article no.: O.FR.NP.10.3.R

Article no.: O.FR.NP.10.4.R

Article no.: O.FR.10.1.M

Article no.: O.FR.10.2.M

Article no.: O.FR.10.3.M

Article no.: O.FR.10.4.M

Article no.: O.FR.NP.10.1.M

Article no.: O.FR.NP.10.2.M

Article no.: O.FR.NP.10.3.M

Article no.: O.FR.NP.10.4.M

Other Products

question_exchange

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

Once this requirement has been met, FLEXIRO underfloor heating can also be laid on OSB boards. However, according to the specifications of one of the leading manufacturers of construction adhesives, Bostik GmbH, the OSB boards must be connected to the subsurface. Floating boards are not suitable. The OSB boards must be primed before laying the FLEXIRO underfloor heating. In this case, the heating pipes should be covered with screed by at least 5 mm.

In many cases, thin-bed underfloor heating can be installed directly on top of an existing floor covering. Therefore, modernising an already insulated floor with thin underfloor heating usually requires no additional insulation. At FLEXIRO, we only sell special impact-resistant insulation boards for damp rooms. If floor insulation is required in certain situations, e.g. above ground or above garages, it can be purchased from specialist builders' merchants. Once the thermal insulation has been applied, a load-bearing surface must be created before the thin-layer system can be installed.

This is generally possible, but care must be taken to ensure the subfloor is stable, level and dry. Any loose wooden planks should be screwed down beforehand. The subfloor must not give way or spring. When using dry screed boards, two bonded layers should be used. The board manufacturer's additional instructions must be observed. Floating wooden constructions are not suitable as a substrate because they are highly vulnerable to deformation. Therefore, underfloor heating can only be installed on connected wooden structures that are decoupled. Our support team will be happy to provide additional advice on installing thin-layer systems on floorboards.

Enquiry form

All FAQ

FLEXIRO meets the Trusted Shops quality criteria

  • Certified since 2013
  • 30 days buyer protection through Trusted Shops
  • More than 300 positive reviews

play_circleback-to-top