MATT SEALER for Jesmonite, Gypsum , Cement castings - Best sealing and Protection against water and stain -READY TO SHIPMatt Sealer is a water based acrylic Sealer developed to generate a water repellent and stain resistant protective film on medium and high porous alkaline materials such as Jesmonite , Gypsum and gypsum based mixtures, Concrete, Plasters, foam cements, Natural stones , bricks, and more. Thanks to its specific formulation, the product is able to create an excellent chemical barrier against capillary rising in structures that are also decoese, giving