CertainTeed M2Tech® gypsum boards are moisture and mold resistant and are designed for use on interior walls and ceilings; specially engineered to provide enhanced moisture and mold resistance. They have a specially formulated moisture resistant core and are enclosed in a 100% recycled moisture and mold resistant light violet colored face paper and bronze colored back paper. M2Tech Gypsum Boards may be finished, painted textured or wallpapered using regular gypsum board techniques.