Find out how to Correctly Restore Your Water Damaged Drywall. Sink the screwheads slightly beneath the drywall floor. Sink the screwhead just under the surface of the drywall. Score the back of the drywall with a box cutter or knife about an inch from all sides. In contrast to plaster, drywall has a seamless paper covering that rarely cracks or splits. If the harm is restricted to the drywall compound, simply take away all free materials and apply new compound. Notice that in some circumstances we present mesh tape with light-weight or all-purpose compound utilized over it. Strictly speaking, for…