This insulation type presents as two layers of polyethylene bubbles sandwiched between reflective surfaces, typically aluminum foil. The bubbles are similar in appearance to those found in bubble wrap, but are often larger and more robust. The reflective surfaces are bonded to the bubble layers, creating a multi-layered material that appears shiny on both sides. It is generally rolled for ease of transport and installation, giving it a cylindrical shape when packaged.
The construction of this material offers insulation advantages, primarily through reflecting radiant heat. This reflective property can contribute to energy efficiency by reducing heat transfer. Historically, reflective insulations have been utilized in various applications where temperature control is desired. Their relatively low weight and flexibility have also contributed to their adoption in certain construction scenarios.
