Thermal conductivity of porous insulation depends on the heat transfer through convection of pores. Typically, pores within conventional insulation are over 1mm wide, allowing gas molecules to move freely and transfer thermal energy by convection. By comparison, pores within Aerogel can be as small as 20-40 nano millimetre (even smaller than the 'mean free path' of air at 60-100nm). As a result, individual air molecules within the pores have no space to transfer thermal energy by convection.

Furthermore, as Aerogel only contains 0.1-5% silica and the thermal conductivity of air is very low, heat transfer is minimal and conduction in the gas will diminish with any decreases in pressure. Conduction through the solid structure and air molecules within Aerogel is also minimal. With little space for convection, air molecules constantly collide with the walls of the pores, suppressing gas conduction.

Aerogel is a synthetic porous ultralight material derived from a gel, in which the liquid component for the gel has been replaced with a gas without significant collapse of the gel structure. The result is a solid with extremely low density and extremely low thermal conductivity. 

AEROGEL based 2X Thermal Insulation coating for the first time in India, formulated using polymer modified acrylic binder with special eco-friendly additives.