Compound for laminated plasterboard. Inorganic load-based powder, whose special additives permit mixing with water to obtain a joint compound for applying to laminated plasterboard systems. The resulting compound hardens by drying in contact with air. Drying time varies depending on the atmospheric conditions in which it is applied, ranging from 12 to 48 hours (higher temperatures and lower humidity means longer drying times). It provides a perfect fine finish, soft to the touch and easy to sand.