It’s a mixture of limestone, marble dust, and water that is worked into a putty and applied to walls. Once it is dry, it lends the look of marble. Next up is gypsum plaster, popular today due to ...

Gypsum, a natural mineral made largely of calcium sulfate dihydrate, has a variety of uses dating back centuries, from lining walls to serve as a fire retardant for Mesopotamians to a plaster ...

but sandable joint compound will also work if you’re using gypsum products. For many electrical projects, adding a receptacle or switch in a plaster wall often creates a mess. Not to worry ...