Synergistic wall construction method

Abstract

A thermal barrier and air barrier system is described.

What is claimed is: 
     
         1 . A wall system comprising:
 a thermally resistant steel stud; and   spray foam insulation on a side of the steel stud.   
     
     
         2 . The wall system of  claim 1 , wherein the system includes a plurality of thermally resistant steel studs arranged in a wall format and a foam board on the side of the side of the steel stud. 
     
     
         3 . The wall system of  claim 2 , further comprising an air barrier adjacent to the foam board. 
     
     
         4 . The wall system of  claim 3 , further comprising a batt insulation between the steel studs. 
     
     
         5 . A method of building a thermally resistant wall comprising:
 installing a plurality of thermally resistant steel studs to form a cavity; and   spraying foam insulation to fill the cavity with foam insulation that passes through voids of the thermally resistant steel studs.   
     
     
         6 . A wall comprising a thermally resistant steel stud, spray foam insulation, and an air barrier on an outer surface of the wall.