Drywall mud, a joint compound, is a gypsum-based paste used to finish drywall joints and corners in new installations. It's also handy for repairing cracks and holes in existing drywall and plaster ...

“Mudding,” the process of applying multiple thin coats of drywall compound to the joints and screw indentations in newly hung drywall, sounds messy, and it is. When done correctly, the result is a ...