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Retrofit UFH

LoPro™10 key facts

Award-winning LoPro™10 - our low-height floor construction for retrofit.

The biggest challenge to installing underfloor heating in an existing building is often height build-up. In response, Nu-Heat developed LoPro™10, a floating floor with just 15mm height build up and excellent thermal properties that can be fitted on top of the existing floor deck.

Nu-Heat's LoPro™10 retrofit UFH system has been designed as an alternative method of heating existing domestic properties. Homes built within the last 20 years and those that have undergone fairly standard insulation upgrades can now benefit from all the advantages of underfloor heating usually reserved for new-build.

LoPro™10 provides a practical, economical alternative to a traditional radiator-based system and is designed for use with existing or new gas/oil/lpg condensing boilers. A LoPro™10 system typically requires a flow temperature of 45°C-55°C – much lower than a typical radiator system which would have a flow temperature of 70°C-80°C and complementing the performance characteristics of condensing boilers perfectly.

LoPro™10 benefits

  • Standard 15mm depth before floor coverings are fitted
  • 10mm ultra flexible PEX-c pipework is easily laid in the panels in lengths of up to 60m
  • Provides airborne acoustic reduction on timber upper floors by adding mass –15.5kg/m2
  • Fixing system enables 10mm PEX-c to be closely laid up to 10 abreast, enabling easy run back to the manifold
  • Integrates with the existing heating system
  • Can be used on ground and upper floors of the building
  • Dense rigid thermal gypsum board can be tiled on directly with just a thin de-coupling layer
  • Can be used with carpet and underlay, vinyl and linoleum
  • Laminates and engineered floors can be floated directly over the panel

Watch our LoPro™10 video

Performance - heat output

Nu-Heat's LoPro™10 system will provide varying heat output dependent on water flow temperature and the thermal conductivity of the final floor covering. As a general rule, hard finishes such as tile and stone will produce the highest heat outputs followed by timber and carpet. Nu-Heat includes heat loss calculations to verify the suitability of the chosen floor finishes and ensure heat output will meet expectations for all fully designed LoPro™10 systems.

Maximum heat ouput figures for LoPro™10 in living areas based on 10°C differential temperature

Available heat flow (W/m2)
 Flow water temperature
35°C
40°C
50°C
55°C
 Natural stone/tiles
26
40
66
79
 14mm engineered board
24
35
59
71
 2 tog carpet/underlay
18
27
45
54
Indicative figures for general guidance only

 

Insulation upgrades

To increase the output of LoPro™10 Nu-Heat recommends the addition of our rigid 10mm fibreboard insulation. This layer is optional and can be omitted where adequate floor insulation is already in place or there are practical height constraints.

Where possible, suspended timber ground floors should have suitable insulation fitted between the joists to improve the overall thermal efficiency and running cost of the system.


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