Dry screed

 

Floor installation

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Basic installation

Advisable for upper floors and for lower installation heights

Basic installation underfloor heating with dry screed
  • Plaster fibre dry screed element (e.g. Fermacell)
    20 mm
  • GreenLine system panel + MVR heating pipe
    30 mm
  • Edge insulation strips
  • Total installation height approx.
    50 mm

Extended installation with additional insulation

Advisable for the ground floor or cellar and for larger installation heights

Extended installation underfloor heating with dry screed
  • Plaster fibre dry screed element (e.g. Fermacell)
    20 mm
  • GreenLine system panel + MVR heating pipe
    30 mm
  • Additional insulation
    ≥ 30 mm
  • Edge insulation strips
  • Total installation height approx.
    80 mm

 

Suitable floor coverings

suitable for tiles, design flooring, carpet, laminate and parquet

 

Technical data Basic installation Extended installation
Heating circuit length ø 80 – 90 m (~ 15 m²) | max. 110 m
Additional insulation 20 – 60 mm wood firbre insulation ≥ 150 kPa
Weight 40 kg / m² (without floor covering)
Surface load | Point load 2.0 kN / m² | 1.0 kN 2.0 kN / m² | 1.0 kN
Minimum thermal conductivity resistance R ≥ 0.75 m²K / W
DIN EN 1264: Floors in mezzanine floors
≥ 1.25 m²K / W
DIN EN 1264: Floors on ground floors/ cellars

 

Important information
Base requirements
(accord. DIN 18202 table 3, line 4)
Bases must be level, stable and able to take a load.
Unevenness > 3 mm at 1 m length must be compensated.
Compensation of unevenness
(according to degree of unevenness)
0 – 10 mm: Floor levelling paste
10 – 50 mm: Floor levelling paste, thin screed
from 40 mm: Bulk filling, light concrete
Special aspects Alternatively, plaster fibre dry screed elements with a thickness of 25 mm can be used.

 

Performance table

Floor covering Room­ temperature Heating water temperature
30°C 35°C 40°C 45°C
W / m² ST W / m² ST W / m² ST W / m² ST
Floor covering
Rλ,B = 0.00 m² K / W
Tiles
20 °C 41.0 23.8 62.2 25.8 83.3 27.7 104.3 29.7
24 °C 23.6 26.2 45.2 28.2 66.4 30.1 87.5 32.1
Floor covering
Rλ,B = 0.05 m² K / W
Laminate, needle punched flooring, PVC
20 °C 32.8 23.0 49.8 24.6 66.7 26.2 83.5 27.7
24 °C 18.9 25.7 36.2 27.4 53.2 28.9 70.0 30.5
Floor covering
Rλ,B = 0.10 m² K / W
Carpet
20 °C 27.4 22.5 41.5 23.8 55.6 25.1 69.6 26.4
24 °C 15.7 25.5 30.2 26.8 44.3 28.1 58.4 29.4
Floor covering
Rλ,B = 0.15 m² K / W
Ready-made parquet, wooden floor boards
20 °C 23.5 22.2 35.6 23.3 47.7 24.4 59.7 25.5
24 °C 13.5 25.3 25.9 26.4 38.1 27.5 50.1 28.6
W / m² – System heating output
ST – Surface temperature

 

Installation

 

Sample laying plan

Sample laying plan underfloor heating

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