A non load-bearing interior demising wall construction comprising a plurality of CAF panels each sized to span the full wall height and placed in aligned edge to edge abutted position and a plurality of stiffening means also sized to span the full wall height. CAF panels and stiffening means slidably disposed within a top and bottom track and sized to provide a friction fit therein. A plurality of wall facing sheets sized to span the full wall height placed in edge to edge abutted position to as to provide a seamless wall face with said wall facing sheets residing outside said top and bottom tracks and attached to said stiffening means. Preferably, top and bottom track and stiffening means are comprised of readily available standard drywall materials.