To isolate the interior of a home from its exterior environment, we need to create a strong exterior envelope that will block, isolate the exterior temperature from the interior of the building.
And this is achieved with the building envelope (shell) that resists the transfer of energy, from the external environment to the internal space.
Energy transport is carried from one material to another by conduction, air, and radiation.
And the coefficient of this transfer, depending on the material we use in the building shell, can be up to 7, 000 times greater.