They have a high vapour resistance so may also function as a vapour control layer.
Multi layered thermal reflective insulation.
Nasa scientists have discovered that a thin layer of aluminum can insulate as well as a 7 foot thick piece of conventional insulation.
Their installation typically relying on the need for an adjoining cavity facing the surface reflective foil.
Multi layered thermal reflective insulation or attic radiant barrier insulation uses the same technology to keep your attic temperature constant that nasa uses for the space program.
All of our products are designed to help improve the performance of mass insulation by increasing the thermal efficiency and reducing radiant conduction and convection heat transfer.
We have several multi layer reflective insulation products to meet different installation methods and applications.
Multi layer reflective foil insulation is recommended for use in a range of applications.
For example a 2 by 4 section of wall with fiberglass batting might have an r value of 11 to 15 while 7 layers of aluminum foil subdividing the space.
Multi layer insulation mli is thermal insulation composed of multiple layers of thin sheets and is often used on spacecraft and cryogenics it is one of the main items of the spacecraft thermal design primarily intended to reduce heat loss by thermal radiation in its basic form it does not appreciably insulate against other thermal losses such as heat conduction or convection.