What is skim coating?
Skim coating is the process of applying a layer of muddy compound to smooth out rough or damaged ceilings and walls. The compound can be used to repair entire walls or fill deep scratches, holes, dents, and water-damaged portions of drywall. After applying a slab of skim coat to the damaged or textured area, the excess is skimmed off and a second layer is often added. The wall can then be painted or wallpapered without the appearance of dings, paint bubbles, or roughness.