(Gypsum is a mineral that hardens into a solid, durable material.) This new invention was called Sackett Board, but over the years it picked up nicknames. Plasterboard described its contents ...

You may hear terms like "wallboard," "plasterboard," "gypsum board," "purple board," and "green board" used to describe this material. One of the most popular terms is "Sheetrock." Even though ...