Learn More › “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 ...

Joint compound (also known as “drywall mud,” “Sheetrock mud,” or simply “mud”) is comprised mainly of gypsum dust and can be bought in bags of ready-to-mix powders or in pre-mixed tubs.