Fixing drywall depends on the specific damage. In general, repairing holes in the wall involves clearing away loose debris, applying a patch or joint compound, and smoothing and sanding it over. Larger holes may require wooden or metal supports, new drywall pieces, tape, and compound.
Sheetrock is a brand name often used interchangeably with drywall. The cost to repair Sheetrock is comparable to the cost of repairing drywall since it uses the same patching materials. The actual sheets generally cost more than their generic counterparts. Sheetrock costs around $12 to $20, depending on panel size, type, and thickness.
Water damage to drywall may involve several signs. Water stains, for example, can appear as yellow, brown, or black stains on the surface and grow larger as the moisture permeates the materials. Musty or moldy odors, peeling paint or wallpaper, and sagging or bulging are also often accompanied by moisture problems.