Interior with wooden flooring, staircase and historic beam structure from the Madiswil mill, and white plastered walls with internal insulation made from Fixit 222 aerogel insulating plaster.

10 years of Aerogel – the measurement and empirical values are convincing!

Long-term measurement

Measurement results

Advantages of Aerogel

For historical properties

Interior of the Madiswil mill with historic wooden beam structure and white plastered walls with aerogel interior insulation.

The innovation Fixit 222 Aerogel has proven itself over the years.

The innovative Fixit 222 Aerogel high-performance insulating plaster has been in use for more than a decade. Following the launch of this product innovation in 2013, the quality and durability of the product was monitored and tested in parallel in a long-term test.

To ensure independent assessment and monitoring, the Fraunhofer Institute in Holzkirchen, Germany, was commissioned in 2014 to carry out this investigation and determine the hygric measurement values. The old cooperage of the Benediktbeuern Monastery was chosen as the test property – its exterior façade was insulated with Fixit 222 Aerogel high-performance insulating plaster in the same year.

The Fraunhofer Institute’s results for Fixit 222 Aerogel

Thickness of the insulating plaster application: 49.4 mm
Dry bulk density of the product: 216 kg/m³
Porosity: 90 %
Diffusion resistance coefficient µ: 3.3
Water absorption coefficient: 12.6 kg/m² per hour
Moisture content at 23 °C and 80 % relative humidity: 0.83 [Vol. %]
Free water saturation: 46.2 [vol. %]

All values given correspond to the average of the measured values.

Long-term measurement procedure for Fixit 222 Aerogel insulating plaster

Over three winter periods, the temperature, humidity and heat flow were measured precisely at key points throughout the building – including directly under the Aerogel high-performance insulating plaster. In addition, all material parameters (such as water absorption and diffusion capacity) were determined in the Fraunhofer Institute’s laboratory using material samples in accordance with current standards.

Fixit 222 Aerogel high-performance insulating plaster has a high capillary absorbency due to moisture transport within the binder matrix and is extremely permeable. The high bulk density of the insulating material and the resulting slower temperature adjustments in direct sunlight are similar to conventionally rendered façades. As only a thin layer of Aerogel high-performance insulating plaster is applied, the thermal resistance is much lower than with conventional compact façades. The susceptibility of the façade to fungal or algae growth is therefore very low. 

Thanks to the smooth application by spraying, any cavities are filled and no condensation is to be expected. The insulation itself is invisible and fulfils all monument restoration and heritage protection requirements. The porosity in the Aerogel high-performance insulating plaster ensures reliable moisture absorption and release and therefore regulates the moisture level. This property is of enormous importance, especially for energy-efficient interior renovations.

Tried, tested and proven – Fixit 222 Aerogel is the innovation in insulating plasters

The Fixit 222 Aerogel high-performance insulating plaster has now been tried and tested for over 10 years on a wide variety of buildings. The capillary activity and porosity of the plaster ensure that the masonry behind it is heated and dried thanks to the composition of lime as a binding agent and mineral Aerogel silicate stone with an extremely high air content.

Product photo Fixit 222 Aerogel high-performance insulating plaster in a bag, isolated

After 10 years of use, Fixit 222 Aerogel high-performance insulating plaster has established itself in the construction industry.

Countless experiences with Fixit 222 Aerogel high-performance insulating plaster as an insulating material show that the trust customers place in our innovative technology is justified.


To the product Fixit 222 Aerogel

To the references with Fixit 222 Aerogel

The advantages of Fixit 222 Aerogel high-performance insulating plaster compared to conventional thermal insulation boards:

  • Minor unevenness in the substrate is eliminated without cavities by the spraying process during plaster application. No condensation forms between the masonry and the Aerogel high-performance insulating plaster, and moisture transport is ensured.
     
  • Difficult details in the masonry can simply be filled. When using thermal insulation boards in such cases, very precise cutting is required and a lot of labour time has to be invested.
     
  • The living history of the building can be shown and preserved – in the area of listed buildings and historic old buildings, the Aerogel insulating plaster can be used to easily maintain the desired unevenness or curves in the masonry and at the same time promote energy-efficient renovation.
     
  • Thanks to the low application thickness of the Aerogel insulating plaster, very little space and living area is lost in the interior, while at the same time achieving excellent Lambda values. These have been independently verified and confirmed by the SIA.
A historic staircase with curved banisters and interior insulation made from Fixit 222 aerogel insulating plaster.

Fixit 222 Aerogel also shows its potential indoors

The simple application with complicated geometries such as a stepped arched lintel and the installation in the window reveal with the same material are advantageous from a structural and conservation point of view. Together with the other building physics aspects of Fixit 222 Aerogel high-performance insulating plaster (such as the absence of condensation and drying behaviour), the product meets all the requirements for the energy-efficient renovation of historic buildings.

The original substance is only changed or impaired to a very small extent and the reversibility of the insulation solution is also relatively simple.

The physical advantages of Fixit 222 are fully utilised in exterior areas.

Applying the Aerogel high-performance insulating plaster makes the underlying masonry warmer and drier in the long term. The heat storage capacity of the often solid walls in historic buildings is retained and the internal surface temperature increases.

On the one hand, this leads to considerable energy savings and a lower heating requirement and, on the other, to a significant increase in comfort for the residents. The interior feels less cold after external insulation with Aerogel high-performance insulating plaster.

Yellow plastered exterior façade with historic, curved lines on the outer edge and insulation with Fixit 222 aerogel.

Fixit 222 Aerogel is perfect for the energy-efficient renovation of historical buildings

  • The low layer thickness combined with a high insulating effect also convinces sceptics. The first 3–6 cm are decisive for a very good insulating effect, after which the U-value flattens out noticeably. If the conventional render is replaced with Aerogel high-performance insulating plaster, this layer thickness is perfect for insulating the building efficiently and for the long term, as well as preserving its historical appearance.
     
  • After plastering with Aerogel high-performance insulating plaster, the appearance is completely identical to a conventionally plastered façade. The insulation itself remains completely invisible – you can't see that the house has been insulated, thereby protecting local architectural heritage.
     
  • With Fixit 222 there is no slab marking as with conventional compact façades. These markings are always visible, especially in grazing light, and must be accepted by the client in accordance with SIA 243.
     
  • Fungus and algae formation is prevented due to the capillary activity and low layer thickness of the Aerogel insulating plaster. Due to the lower thermal resistance from the inside, the façade has a higher surface temperature. This favours rapid drying and eliminates the risk of fungus and algae, even on the north façade or in heavily weathered areas.
Historic apartment building with white plastered and insulated façade made from Fixit 222 Aerogel high-performance insulating plaster.

Fixit 222 Aerogel

Extremely effective insulating material, as excellent insulation values are achieved with just 4 to 6 centimetres of the light and airy insulating plaster. This makes the render perfect for the energy-efficient renovation of historic buildings.

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[Translate to English (CH):] Modernes Einfamilienhaus mit Pool und weiss verputzter Aussenfassade mit Wärmedämmverbundbsystem

Thermal insulation of buildings

You can find an overview of all topics relating to thermal insulation for new buildings or existing buildings – whether as a composite thermal insulation system or thermal insulation plaster.

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