Has the doorknob hit the wall so many times it has made a hole? A doorknob hole is small enough to be repaired using a drywall repair kit that contains a small metal screen with an adhesive backing. The screen is placed over the hole, and drywall compound is spread over the screen.
Two or three applications of compound should be enough to complete the repair.
If the hole is large, you will have to remove some of the damaged drywall to make the repairs.
Using a pencil, draw a straight line just above and just below the hole. Use a drywall saw and cut each line until you reach a wall stud on either side of the hole.
Next, measure more than three-quarters of an inch from each edge of the hole to find the center of each stud. Draw a straight vertical line where you measured to join the top and bottom cuts. Score the vertical lines using a box knife and remove the drywall from the opening you made.
Buy a small piece of drywall from a home store and cut it to fit the opening. Most of the larger home stores carry small pieces of drywall for repairs such as this.
Attach the drywall to the studs using drywall screws. Use a 4-inch-wide putty knife to apply drywall compound to the joints and cover with mesh drywall tape. Allow the compound to dry and apply several more coats, feathering the edges of the compound further out each time. Sand the area and youre ready to paint.