Gyprock® Casting Plaster Gyprock Casting Plaster is used for the manufacture of plasterglass, fibre-reinforced plaster sheets, cornices and general casting applications. This plaster is grit free and produces a strong moulded product with a clean cast face. Mould Casting: Moulds should be thoroughly cleaned and coated with a release agent where appropriate. Pour the mixed plaster into moulds and allow adequate time for setting before stripping. When used for the manufacture of fibre-reinforced plaster products, fibreglass rovings are laid into the plaster slurry during casting. Product Options: Gyprock Casting Plaster is available in a 20kg bag.
