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Ultra-Low-Profile Screed Underfloor Heating

In this system the Profix® Panel is combined with a cement-based levelling compound that is both quick drying and self-levelling. This creates a unique ultra-low profile warm-water underfloor heating system with a high heat output even at low water temperatures. It also makes for much faster response times than standard warm-water underfloor heating systems.

Thanks to the Profix® Panel’s unique patented design and high strength, total system depth starts at just 15mm (for tiles or engineered wood flooring), making it especially suitable for projects where any build-up to floor height is at a premium.

To see how the Profix® Panel can be used to create an ultra-low-profile screed underfloor heating system, check out our video below.

Profix® Ultra-Low-Profile Screed System

Sub Floor Type

  • Suspended Timber Floors
  • Solid Floors
  • Acoustic Floors

Build Type

  • New Build
  • Refurbishment

Floor Coverings

  • Tiles
  • Engineered Wood
  • Luxury vinyl (LTV) or Linoleum
  • Carpet

Room Type

  • Small & Large Areas
  • Regular & Irregular Shape

Heat Output Table

MEAN WATER TEMPERATURE
300 300 350 350 400 400 450 450 500 500
SYSTEM
TYPE
FLOOR COVERING Heat Output W/m2 Floor Surface Temp oC Heat Output W/m2 Floor Surface Temp oC Heat Output W/m2 Floor Surface Temp oC Heat Output W/m2 Floor Surface Temp oC Heat Output W/m2 Floor Surface Temp oC
Profix® Ultra-Low-Profile Screed Tiles 56.6 25.2 84.9 27.8 113.2 30.4 141.5 33.1 169.8 35.7
LVT 40.2 23.7 60.3 25.6 80.4 27.4 100.5 29.3 120.6 31.1
15mm Engineered Wood 37.0 23.4 54.0 25.1 73.0 26.4 91.3 28.2 109.8 30.1
Carpet & Underlay (1.5 TOG) 30.0 22.8 45.0 24.1 60.0 25.5 75.0 26.9 90.0 28.3

*For Guidance only - all systems must conform to BS EN 1264

Heat Output Table
SYSTEM
TYPE
Profix® Ultra-Low-Profile Screed
FLOOR COVERING Tiles
MEAN
WATER
TEMPERATURE
DESCRIPTION VALUE
300 Heat Output W/m<sup>2</sup>2 56.6
300 Floor Surface Temp <sup>o</sup>C 25.2
300 Heat Output W/m<sup>2</sup>2 84.9
300 Floor Surface Temp <sup>o</sup>C 27.8
350 Heat Output W/m<sup>2</sup>2 113.2
350 Floor Surface Temp <sup>o</sup>C 30.4
350 Heat Output W/m<sup>2</sup>2 141.5
350 Floor Surface Temp <sup>o</sup>C 33.1
400 Heat Output W/m<sup>2</sup>2 169.8
400 Floor Surface Temp <sup>o</sup>C 35.7
Heat Output Table
SYSTEM
TYPE
Profix® Ultra-Low-Profile Screed
FLOOR COVERING LVT
MEAN
WATER
TEMPERATURE
DESCRIPTION VALUE
300 Heat Output W/m<sup>2</sup>2 40.2
300 Floor Surface Temp <sup>o</sup>C 23.7
300 Heat Output W/m<sup>2</sup>2 60.3
300 Floor Surface Temp <sup>o</sup>C 25.6
350 Heat Output W/m<sup>2</sup>2 80.4
350 Floor Surface Temp <sup>o</sup>C 27.4
350 Heat Output W/m<sup>2</sup>2 100.5
350 Floor Surface Temp <sup>o</sup>C 29.3
400 Heat Output W/m<sup>2</sup>2 120.6
400 Floor Surface Temp <sup>o</sup>C 31.1
Heat Output Table
SYSTEM
TYPE
Profix® Ultra-Low-Profile Screed
FLOOR COVERING 15mm Engineered Wood
MEAN
WATER
TEMPERATURE
DESCRIPTION VALUE
300 Heat Output W/m<sup>2</sup>2 37.0
300 Floor Surface Temp <sup>o</sup>C 23.4
300 Heat Output W/m<sup>2</sup>2 54.0
300 Floor Surface Temp <sup>o</sup>C 25.1
350 Heat Output W/m<sup>2</sup>2 73.0
350 Floor Surface Temp <sup>o</sup>C 26.4
350 Heat Output W/m<sup>2</sup>2 91.3
350 Floor Surface Temp <sup>o</sup>C 28.2
400 Heat Output W/m<sup>2</sup>2 109.8
400 Floor Surface Temp <sup>o</sup>C 30.1
Heat Output Table
SYSTEM
TYPE
Profix® Ultra-Low-Profile Screed
FLOOR COVERING Carpet & Underlay (1.5 TOG)
MEAN
WATER
TEMPERATURE
DESCRIPTION VALUE
300 Heat Output W/m<sup>2</sup>2 30.0
300 Floor Surface Temp <sup>o</sup>C 22.8
300 Heat Output W/m<sup>2</sup>2 45.0
300 Floor Surface Temp <sup>o</sup>C 24.1
350 Heat Output W/m<sup>2</sup>2 60.0
350 Floor Surface Temp <sup>o</sup>C 25.5
350 Heat Output W/m<sup>2</sup>2 75.0
350 Floor Surface Temp <sup>o</sup>C 26.9
400 Heat Output W/m<sup>2</sup>2 90.0
400 Floor Surface Temp <sup>o</sup>C 28.3

*For Guidance only - all systems must conform to BS EN 1264

Rapid Drying Times

One of the core benefits of combining the Profix® Panel with a cement-based quick drying levelling compound is that drying times are significantly reduced compared to other wet screed systems. Thanks to its ultra-low-profile, the levelling compound dries rapidly, with light foot traffic possible after just 4 hours (in good drying conditions). Final floor coverings can be applied after just 24 hours, (depending on your final floor covering).

Floor Coverings

The Profix® Panel can be used to create an ultra-low-profile screed underfloor heating system suitable for a wide range of different floor coverings. Due to its extremely low profile, in good drying conditions the levelling compound dries in just 4 hours. No over-boarding is required, meaning you can simply lay your final floor covering directly on top. The minimum required underfloor heating screed depth depends on the final floor covering chosen, whether that be tiles, engineered wood, carpet, or vinyl.

Tiles or Engineered Wood

For tiles or engineered wood floor coverings, a minimum underfloor heating screed depth of 15mm will be required. At this depth the screed will only just cover the upper surface of the Profix® panels.

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Carpet or Luxury Vinyl

For carpet or vinyl floor coverings, a minimum underfloor heating screed depth of 18mm will be required. At this depth the screed will cover the upper surface of the Profix® panels by a minimum of 3mm which is necessary for sufficient point load resistance to be achieved.

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Benefits

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Ultra Low Profile

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High Compressive Strength

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Suitable for both Residential & Commercial Applications

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Heats Up Faster than Standard Systems

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Rapid Drying Times

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Suitable for a Range of Floor Coverings

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High Heat Outputs Even at Low Water Temperatures

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No Over-boarding Required – Simply Lay Final Floor Coverings Directly On Top

How To Buy

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Technical Resources

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Installation guide: Profix Ultra-Low-Profile Screed System - Concrete Floor

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Installation guide: Profix Ultra-Low-Profile Screed System - Suspended Timber Floor

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Installation guide: Profix Ultra-Low-Profile Screed System Over Profix XPS Insulation - Concrete Floor

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Installation guide: Profix Ultra-Low-Profile Screed System Over Profix XPS Insulation - Timber Floor

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Installation guide: Profix Ultra-Low-Profile Screed System - Concrete Separating Floor

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Installation guide: Profix Ultra-Low-Profile Screed System - Suspended Timber Separating Floor

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Profix Levelling Compound - Product Data Sheet

Additional Products

Add a thin layer of high compressive strength Profix® XPS Insulation over existing floors to reduce downward heat loss without disturbing them.

Learn More

Testimonials