Thermal insulation and energy saving
Thermal insulation and energy saving
Thermal insulation and energy saving
Thermal insulation and energy saving

Lumira® aerogel

Efficient advantages for skylight technology

Lumira® aerogel is a silicate from the silica aerogel product group. The silicate is filled into PC multi-wall panels and thus helps with the infill of skylights, of ventilation and SHEV units and in façade systems. The combination of properties offers the possibility of significant weight savings without having to sacrifice excellent thermal and sound insulation. This makes Lumira® aerogel equally interesting for new buildings and for renovations. Lumira® aerogel also provides low thermal conductivity, excellent light transmission and light distribution, improved sound insulation as well as UV stability and moisture resistance. 
With Lumira® aerogel installed in your skylight or façade systems, you not only benefit from the advantages of the lightest solid material in the world, but also have a strong, reliable partner at your side in roda. We will be happy to advise you on made-to-order solutions for your building project.  

Low thermal conductivity 

Polycarbonate multi-wall panels filled with Lumira® aerogel achieve a U-value of up to 0.54 W/m²K. This allows more daylight utilisation through the roof and façade with minimised heat loss and creates architectural freedom. Building regulations can also be easily met or even exceeded without having to forego natural daylight. 

Thermal insulation and energy savings 

Lumira® aerogel translucent aerogel enables architects and builders to comply with strict building regulations, such as Part L in England, CTE in Spain or the Passivhaus Standard in Germany. In this way, planners can decisively improve the thermal insulation of the glazed surface of buildings. Reducing the U-value means improving the thermal properties of the building envelope or additionally increasing the glazed area compared to standard skylights or façades. 
Not to be forgotten are the high energy savings that can be achieved with Lumira® aerogel. The silicate prevents glare from direct sunlight and reduces lighting costs. Together with the considerable savings in heating and cooling, this achieves considerable potential for energy and cost savings. According to DIN 4701, a reduction of the U-value by 0.1 W/m²K results in a saving of 0.9-1.3 litres of heating oil or 1.0-1.5 m3 of natural gas per square metre of glazed area.  

Excellent light transmission and light diffusion 

Natural daylight is particularly important for buildings because it creates a pleasant room atmosphere that has a positive effect on people's psyche, well-being and motivation. Lumira® aerogel is characterised by excellent light transmission of up to 90% at 1 cm thickness. When filled into PC multi-wall panels, Lumira® aerogel achieves up to 30% more light incidence than when using opal coloured PC multi-wall panels. 
Lumira® aerogel users are not only impressed by the light transmission, but also by the light diffusion. This is because Lumira® aerogel offers excellent light diffusion through diffuse light that is evenly distributed throughout the building. This prevents glare from direct sunlight and increases lighting comfort in the room, which makes living or working in buildings much more pleasant and thus also more efficient. 

In addition, Lumira® aerogel ensures a reduction in solar transmission due to less heat exposure in summer. This makes sun protection louvres superfluous and reduces investment and maintenance costs without changing the building design or the façade view.  

Further efficient advantages 

Lumira® aerogel also improves sound insulation. This is because there is little solid-state vibration due to the highly porous structure and low solid content in aerogel. Thus, sound waves travel much slower inside the aerogel than outside. A 16 mm multi-wall panel filled with Lumira® aerogel increases the sound insulation value by 3dB compared to an unfilled panel. The sound insulation is particularly evident at low frequencies, such as those that occur with aircraft noise or road noise. 
In addition, Lumira® aerogel is UV-stable, shows no change in chemical and physical properties over the years and is permanently moisture-resistant. Therefore, the silicate does not provide a breeding ground for fungal or mould growth, which is considered a particular advantage in the food industry.  


Lumira® aerogel is used wherever natural lighting is required without losing sight of the building insulation aspect. That is why Lumira® aerogel is used in many standard skylight products. In addition to use in skylight systems, there are also a number of different options available for façade applications: 

For roof applications: 

  • Rooflight domes 
  • Barrel roofs 
  • Skylights 
  • Continuous Rooflights 
  • Winter gardens 
  • Ventilation systems 
  • SHEV units 

For façade applications: 

  • Curtained façade systems 
  • Partitions 
  • Click systems 

Lumira® aerogel is certified by the French Institute Centre Scientifique et Technique du Bâtiment (CSTB) with the Avis technical certificate number 6/06-1699 for use in polycarbonate panels. 


Advantages of the product


  • Combination of daylight illumination with excellent thermal insulation 
  • Unsurpassed low thermal conductivity of 0.018 W/m2
  • Light transmission up to 90% at 1 cm thickness 
  • Excellent light diffusion thanks to diffuse light 
  • Reduction of solar transmission  
  • Optimised sound insulation 
  • UV stability 
  • Moisture resistance 
  • Hardly any condensation, therefore no mould growth in the panels 
  • No smoke development, as non-combustible material (EN 13501-1, classification Bs1.0) 
  • Low weight of 70-100 kg/m³  
  • Reduced energy demand for heating, air conditioning and lighting 
  • Reduction of CO2 emissions 
  • Energy and cost savings 
  • Architectural freedom of design possibilities due to different thicknesses of the polycarbonate multi-wall panels (10, 16, 25, 32, 40, 50 mm)  
  • No need for additional sun protection 

Technical details of the product

Lumira® aerogel


Lumira® aerogel is a silicate from the silica aerogel product group. Aerogels are characterised by a strongly dendritic structure. This means that the structure has a branching of particle chains with very many interstices in the form of open pores. These chains are connected by many contact points, thereby creating the image of a stable, sponge-like network. 
Aerogel is an amorphous form of silica with a pore structure in the nanometre range. Around 95% of the volume consists of air. This makes aerogel the lightest solid in the world. Due to this low solid content and the small pore size, Lumira® aerogel very effectively prevents heat conduction and convection. This is why aerogels are used particularly frequently as insulation or filter material, among other things.  


The diversity of silicate aerogels has been comparatively well studied and thus quite precise information can be provided for their spectrum. The exact fabric properties depend on the desired use and can vary greatly depending on the starting material and manufacturing process. 
Due to several properties, amorphous silica is inherently safe for use in construction applications. These include unsurpassed thermal conductivity, high light transmission, excellent light diffusion, reduction of solar transmission, improved sound insulation as well as UV stability and moisture resistance. Another argument in favour of using Lumira® aerogel in construction applications is that it is non-flammable and does not emit smoke. The low weight, environmental friendliness and the possibility of reducing CO2 emissions and saving on heating costs round off the advantages of Lumira® aerogel.  


Lumira® aerogel