Foil-covered insulating material, the effectiveness of which is measured by the number of reflective surfaces rather than thickness.
an effective barrier against radiant heat transfer because it reflects almost all of the infrared radiation striking its surface and emits very little of the heat conducted through it
Sheet material with one or both sun faces of comparatively low heat emissivity, such as aluminum foil. When used in building construction the surfaces face air spaces, reducing the radiation across the air space.
Sheet material with one or both faces covered with aluminum foil
Sheet material that has had one or both sides covered with a material of high heat reflection, such as aluminum foil.
Insulation with a surface such as foil that reflects heat to enhance the insulating effect.
An aluminum foil fabricated insulator with backings applied to provide a series of closed air spaces with highly reflective surfaces.