Joint compound is a white powder of primarily gypsum dust mixed with water to form a paste the consistency of cake frosting, which is spread onto drywall and sanded when dry to create a seamless base for paint on walls and ceilings.
Kitchen renovation spackling to cover holes and tape between sheetrock boards
Drywall with joint compound applied.
Workers applying joint compound to drywall.
Drywall is a panel made of calcium sulfate dihydrate (gypsum), with or without additives, typically extruded between thick sheets of facer and backer paper, used in the construction of interior walls and ceilings. The plaster is mixed with fiber ; plasticizer, foaming agent; and additives that can reduce mildew, flammability, and water absorption.
Various sized cuts of 1⁄2 in (13 mm) drywall with tools for maintenance and installation
Vertically hung drywall with joint compound
Applying "joint compound" to drywall
Drywall water damage in a closet