Abstract: A wall construction comprising a plurality of interconnected rectangular metal frame assemblies, each frame assembly including metal studs of channel section secured together to form the rectangular frame. A rectangular panel of G.R.C. or the like is secured to the outer face of the frame, and a thermal insulation layer is provided on the outer face of said panel. The wall construction further comprises an inner wall lining of plasterboard or the like on the inner face of the frame assemblies and an external skin at the outer face of the thermal insulation layers of the frame assemblies. The invention further resides in a frame assembly for use in such a wall construction.