A gypsum board which comprises a set gypsum core sandwiched between and faced with fibrous mats, wherein a free surface of one of said mats is pre-coated with a combination of a mineral pigment, optionally an inorganic adhesive binder and an organic binder, preferably a hydrophobic, UV resistant polymer...http://www.google.es/patents/US7745357?utm_source=gb-gplus-sharePatente US7745357 - Use of pre-coated mat for preparing gypsum board
