The material - LUX ELEMENTS®− FOAM – for the environment

LUX ELEMENTS®-FOAM is a very high-quality, blue coloured, expanded polystyrene hard foam with high density that is produced using an environment-friendly technique without CFC, HCFC, HFC or a CO2 foaming agent. LUX ELEMENTS®-FOAM is the most important basic product for LUX ELEMENTS® hard foam support elements.

As opposed to panels containing wood or gypsum, the core of hard foam elements consists of humidity-resistant polystyrene. The manufacturing process differs here between extruded (XPS) and expanded (EPS) polystyrene. While XPS is mainly foamed with CO2, EPS is the most environmentally-friendly material, as it is produced without the foaming agents CFC, HCFC, HFC or CO2. This hard foam is then coated on both sides with a special mortar coating, thus forming an ideal mineral subsurface for usual covering materials used in damp rooms, such as tiles. For increased rigidity values a glass-fibre fabric is additionally embedded in the mortar coating.

Hard foam support elements have been available on the market for almost 25 years, and this material is extremely popular in the tiling industry. First intended as a “simple“ partition element and building plate, it soon developed into a designing multi-talent. In particular, the most versatile shapes can be directly cut from large-volume blocks of expanded foam. For example, a snail shower or circular shower can thus be created from few segments, which must then only be assembled, glued and reinforced at the element joints on site.



proven quality

and rigid






design variety




Physical characteristics

Characteristics Test acc. to Unit Result
Bending strain DIN EN 12089 (08.97)
Verfahren B
kPa 2422 (Average value)
Dimension stability in normal climatic conditions DIN EN 1603 (01.97) Dimensional change in % 0,1
Dimension stability
in defined temperature and humidity conditions
DIN EN 1604 (01.97) Deformation in % -0,2 bis 0,1 (see test report
Nr.: 2.1/20802/025.0.1-2006)
Tensile strength
vertical to panel level
DIN EN 1607 (01.97) kPa 310 bis 420
360 (Mittelwert)
Long-term creep characteristics
when subjected to pressure
DIN EN 1606 (01.97) Compressive deformation in % (see test report
Nr.: 2.1/20802/025.0.1-2006)
Water absorption
in case of long immersion period
DIN EN 12087 (08.97) Area-related water absorption in kg/m2 0,76 (Average value)
Water absorption
in case of long immersion period
DIN EN 12087 (08.97) Volume-related water consumption
in %
7,3 (Average value)
Characteristics in case
of alternating frost-thaw stress
DIN EN 12091 (08.97) Pressure strength in kPa s10 = 204,7 (Mittelwert)
s10,f = 201,7 (Average value)
s10,tr = 199,5 (Average value)
Water vapour permeability DIN EN 12086 (08.97) Diffusion resistance coefficient µ 44
Fire resistance DIN 4102 (05.98) B1, fire-retarding
Thermal conductivity DIN EN 12667 W/(m*K) 0,0336
Compressive stress
(with 10% deformation)
DIN EN 826 kPa 180 - 210
197 (Average value)
Temperature resistance - °C -50 / +75
Toleranzmasse bei Plattenware1)
(thickness range4 - 100 mm)
DIN EN 13 163 (in Anlehnung) mm Thickness +/- 2
Width +/- 2
Length +/- 2
squareness +/- 2 per 1000 mm

1) The thickness value covers the hard foam core including the laminated glass-fibre fabric and the coating mortar layer.

Table version 06/2006

Biological characteristics

LUX ELEMENTS® -FOAM does not provide a breeding ground for micro-organisms. It does not go rotten or mouldy. FOAM is neither harmful to the environment nor hazardous to water.

The safety of FOAM for both indoor and outdoor applications is made most obvious by the fact that the same raw-material is used to make food packaging. See the German Health Ministry's Recommendation V "Polystyrene" here.


Detailed information on individual products can be obtained from test certificates and datasheets.

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