Lemix® is very easy. And nothing new either.

It works exactly as one is accustomed to from the dry construction with building boards. Lemix® panels (previously referred to as “clay building slabs”, by the way) can be easily cut and shaped to size. Using a jigsaw or a portable circular saw or also using an angle grinder and suction hood. Clay panels are always arranged in a bonding pattern with an offset.

Even with electrical/HVAC installations there are no big differences, they can be placed behind the clay panels as usual. For holes, as are required for cavity sockets, you use a compass saw. For attachment of light-weight objects, the use of cavity dowels is recommended. For heavier objects, such as kitchen cabinets, substructures are required. As is usually the case in drywall construction.

Transport aid

With the transport aid you can carry the clay boards easier and faster. It also helps to pick partial quantities from the warehouse. Movie


Lemix® clay panels are mounted in a bonding pattern, either vertically or horizontally. Screws with disc heads or retaining plates are suitable for fixing them to the wall. Broad back staples are also a good alternative for wooden substructures.


The number of screws is important - depending on whether the Lemix® panels are to be mounted on the wall or ceiling. 9 screws are used per clay panel on walls and 15 on ceilings, depending on thickness and position. The exact number required can be easily found out: The Lemix® assembly instructions include drawings which specify the exact number of required fastening points. With disc head screws, keep at least 1.5 centimetres distance from the edge of the panel. If retaining plates are used, the screw can be placed directly in the joint for walls, but not for ceilings and roof slopes.

Corrosion protection

Corrosion-protected materials are ideal for fastening. For example 5 × 50 mm mm screws as well as retaining plates 36 mm in diameter and a perforation 6.8 mm in diameter, alternatively also appropriate disc head screws. Corrosion protection is also necessary for fixings if something is to be hung in rooms with increased humidity, such as bathrooms or kitchens.


If the panels are to be stapled, tested broad back staples, 25 mm wide and 45 to 65 mm long, are required. Attention: Using such broad back staples, the panels can only be attached to walls, but not to ceilings or sloping surfaces.

The staples are aligned parallel with a distance of at least 15 mm to the edge of the panel. It is also important to select the optimum number of fixing points for staples. The relevant information is also provided in the Lemix® assembly instructions.

With our assembly instructions, which you can view online or download, you can assemble our Lemix® clay panels quickly and professionally.

Technical data for processing
Panel size 62,5 × 125,0 cm
Panel thickness 16 mm 22 mm
Panel weight per piece approx. 18 kg approx. 25 kg
Panel weight per m² approx. 23 kg approx. 32 kg
Single panel 0,781 m²/panel
Bulk density class 1,6
Bulk density approx. 1.450 kg/m³
Dimensional accuracy DimAcc II
Permissible deviations:
Nominal length l: ± 4 mm
Nominal width w: ± 4 mm
Nominal thickness t: + 1 / - 3 mm
Evenness e: - 1 mm
Thermal conductivity λ = 0,353 W/mK
Specific heat capacity Cp approx. 1,1 J/kgK
Building material class A1 (non-flammable) according to DIN EN 13501-1:2010-01
Structure with jute fabric backing
Edge shape blunt edge
Equilibrium moisture content 2-3 % according to relative humidity
Surface hardness ≤ 15 mm
Bending tensile strength ≥ 0,8 N/mm²
Surface tensile strength ≥ 0,1  N/mm²
Fastening and attachment gluing, stapling, screwing
Fixing material Disc head screws, corrosion-protected (phosphatic) screws with retaining plates, broad back staples

Flat substructure
Flat substructure

Profile spacing max. 31,25/62,5 cm
Profile spacing max. 31,25 cm
Cutting to size of the Lemix® clay panels with circular saw recommended.
Lemix® clay panels can be used on all conventional substructures used in drywall construction.