They have a high vapour resistance so may also function as a vapour control layer.
Multi layered thermal reflective insulation.
Their installation typically relying on the need for an adjoining cavity facing the surface reflective foil.
In construction multi layer reflective insulation systems either achieve a higher r value for a more energy efficient home or allow an r value that matches local codes in a smaller space.
We have several multi layer reflective insulation products to meet different installation methods and applications.
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.
Multi layer reflective foil insulation is recommended for use in a range of applications.
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.
Given this alternative approach to thermal performance specifiers now need to consider surface emissivity and thermal resistance when specifying thermal insulation products.
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.