MLI works by reflecting radiant heat back to its source. This is achieved by the multiple layers of aluminized film, which act as mirrors for infrared radiation. The layers are separated by spacer fabrics that create air gaps, further reducing heat transfer. As a result, MLI can provide up to 97% reflectivity of radiant heat, making it highly effective in reducing energy loss in buildings.
Due to its high performance and versatility, MLI has been used in various NASA missions, including the Apollo lunar module and the Space Shuttle. It has also been adopted in the construction industry, where it is installed in walls, roofs, and floors to improve thermal efficiency.
MLI is lightweight, easy to install, and fire-resistant, making it a popular choice for residential and commercial insulation. However, it is relatively expensive compared to traditional insulation materials, and it may require specialized installation techniques to achieve optimal performance.