Laminated plasterboard consisting of a 100% natural gypsum core tightly bonded to two cellulose sheets. The board characteristics give it type I, H1 classification as per standard EN-520:2004 +A1 2009. This type of board contains additives that reduce water absorption capacity. They can be used for special applications, where lower absorption properties are required to improve the board specifications. It is used in applications that require greater surface hardness. In addition, its reinforced, high-density formulation makes the surface highly resistant to impacts and fire. It has a nominal thickness of 18 mm, with a nominal width of 900 mm. The long edges of the board are cardboard-coated and tapered (BA).