Composed of a gypsum core bonded to layers of paper or fiberboard, plasterboard/gypsum board is used in construction to form interior walls. "Plasterboard" is a more common term in Europe, while "drywall" or "wallboard" is the term most of us are familiar with in the U.S. Whichever term is preferred, as a building material, gypsum wallboard has a number of advantages. It is readily available, inexpensive, lightweight and easy to install. It is also durable, has excellent dimensional stability and helps control sound transmission. In addition, gypsum wallboard is fire resistant, has low flamespread and smoke density indices and conforms to building code requirements. Finally, gypsum wallboard is easy to paint and decorate, making it perfect for virtually any application.