Firstly it protects the inside of the building from wind moisture and dust effectively sealing it off from much of the elements.
Reflective foil wall insulation.
Wall wrap insulation such as sisalation services two main purposes.
Most commonly it s supplied as sheets used for sarking laminated onto plasterboard or expanded polystyrene xps or supplied as a backing on concertina style batts.
Secondly reflective foil insulates the home by stopping almost all radiant heat transfer.
Foil insulation can take any one of a number forms.
Found in major outlets such as in home depot s insulation aisle reflectix comes in tightly spooled rolls of 25 by 2 feet of shiny reflective foil look bubble wrap texture insulation in plastic bags.
Single and multilayer reflective insulation is designed with low emittance low e surfaces and expander technology that separates each layer to create two or more reflective air spaces within the wall or ceiling cavity.
Foil insulation is insulation that has a thin layer of reflective foil on one or both sides and is designed to reflect heat.
The purpose of wall wrap insulation.