What is Aerotherm? Aerotherm is an innovative insulation material designed to significantly reduce radiant heat transfer. Only 1 mm of the plaster like material applied to walls, ceilings and/or floors effectively insulates any space. The material is composed of AeroGel and 3M micro-beads made of glass and plastic to reflect heat waves. This reflective ability makes Aerotherm particularly effective in improving thermal comfort in buildings. Reflection and Heat Insulation: Although Aerotherm is not a traditional thermal insulator like rock wool or polystyrene, it offers a novel approach to thermal efficiency. The main benefit of Aerotherm lies in its ability to reflect almost all radiant heat. Rather than simply reducing heat transfer through conduction, Aerotherm reflects heat back into the space, significantly reducing radiant heat loss. This effect can be particularly useful in for keeping out direct solar radiation, or perserving heat generated within a room, thereby increasing the energy efficiency of any building. Thin Layer, Massive Impact: Since only 1 mm of Aerotherm effectively insulates any room, there is virtually no loss of interior space, unlike traditional insulation materials that are often more than 10 centimeters thick. This makes it an attractive option for building renovations where space conservation is crucial, such as monuments or small rooms. Finishing design: Aerotherm can easily be finished with paint, plaster or wallpaper, as long as the reflective properties of the material are taken into account. This makes it versatile and suitable for different aesthetic finishes, while maintaining the reflective effect. ​ Energy efficiency: Although the thermal conductivity (λ-value) of Aerotherm may be higher than that of traditional insulation materials, the material offers advantages in other areas. By effectively reflecting heat radiation, energy consumption for heating and cooling can be significantly reduced. This can result in significantly lower energy costs, especially in well-insulated buildings where radiant heat plays a greater role. ​ Scientific Support: The thermal efficiency of materials like Aerotherm is based on their ability to reflect infrared radiation (heat), a property known in science as thermal emissivity. Several studies have shown that low-emissivity materials, such as those used in Aerotherm, are effective at reducing heat radiation, significantly reducing radiant energy loss. A key aspect of Aerotherm is the use of 3M plastic and glass microbeads, which act as a retroreflector for infrared radiation. This phenomenon is well documented in the scientific literature, showing that such materials can reflect heat radiating through walls back into the space, leading to increased thermal comfort and potential energy savings. Similar in purpose, but even more advanced in performance, is aerogel, a material known as one of the best thermal insulators in the world. Aerogel has an extremely low thermal conductivity, often around 0.013 W/m K, which is much lower than traditional insulation materials such as rock wool or polystyrene. It works primarily by trapping air within its nanostructure, thereby reducing both convection and radiation. Although aerogel and Aerotherm use different technologies, they share the goal of minimizing heat loss and improving energy efficiency. Studies published in journals such as Energy and Buildings and Applied Thermal Engineering have shown that high-reflectivity, low-emissivity coatings such as Aerotherm can contribute to significant reductions in energy consumption, particularly in heating and cooling systems. These studies highlight that the application of reflective coatings to interior walls can minimize radiative heat transfer, leading to more efficient control of indoor climate conditions. Experiments have also been conducted comparing the effectiveness of thin, reflective layers such as those in Aerotherm with conventional insulation materials. These studies, available in databases such as ScienceDirect and IEEE Xplore, show that although the thermal conductivity of Aerotherm (λ-value) is higher than that of traditional insulation materials such as stone wool, the reflective capacity of Aerotherm contributes significantly to the overall thermal performance of a building. It is therefore crucial to evaluate the performance of Aerotherm not only on the basis of the λ-value, which primarily measures thermal conductivity, but also on the effective reduction of heat radiation. This holistic approach makes Aerotherm a valuable addition to traditional insulation