a method of producing heatable mirrors comprising depositing onto a ribbon of hot glass during the production process a reflecting coating whereby the mirrors so formed have a visible light reflection of at least 70 % and depositing an electroconductive heating layer onto the mirrors . there is also provided a heatable mirror comprising a glass substrate carrying a non - metallic reflecting coating whereby the mirror has a visible light reflection of at least 70 % and an electroconductive heating layer deposited on the coated substrate .