Gypsum wallboard was first introduced in the 1920’s, and it completed changed interior wall construction. This product is also known as drywall, or sheetrock. The name Sheetrock is a registered trademark of the U.S.Gypsum Co.
There are many advantages of drywall over the traditional plaster wall covering methods. Gypsum wallboard is applied dry, as the name drywall implies, so no moisture need be introduced to the underlying structure during construction. You also don’t waste time waiting for the plaster to dry, and construction can take place even in cold, moist weather periods. Other benefits:
-Drywall is less expensive and less labor intensive to install