Abstract: Plastisol compositions are provided including a polymeric resin in the form of particulates dispersed within a plasticizer and one or more hydrolyzable organosilicon compounds. A suitable solvent system can be utilized in the plastisol compositions. Also provided are inorganic fibers, and particularly reinforcing scrims, that are at least partially coated with a plastisol composition including one or more hydrolyzable organosilicon compounds. Cementitious boards reinforced with plastisol coated inorganic fibers, such as mesh scrims, are also provided.