If you have a small hole the size of a drywall screw in your ceiling, apply a small amount of drywall plaster over the hole with a , let it dry, apply a second coat, let it dry again and then sand the plaster flat with a sanding block to cover the hole. However, if the hole in your garage ceiling is larger, install a backer behind the drywall and apply a patch. This process requires a bit more labor.
Instructions
1. Cut a square piece of drywall that measures slightly larger than the hole in your garage ceiling. Rough dimensions for the measurements are fine.
2. Place the piece of drywall over the hole and trace the drywall onto the ceiling with a pencil. Place a mark on the drywall so you know position the board when you place it back in the hole.
3. Cut out the hole to match the square with a keyhole saw.
4. Cut two pieces of 1-by-1-inch wood 2 inches longer than your hole. For example, if hole roughly measures 12-by-12-inches, cut two 14-inch long pieces of lumber.
5. Place a dab of contractor's adhesive onto each end of the board. Slide the boards behind the drywall and attach them to the back of the drywall by driving 1 1/2-inch drywall screws through the drywall and into the wood. Make sure you can see each piece of wood though the hole.
6. Place contractor's adhesive across the face of the wood inside the hole and place the drywall patch into the holes. The drywall will rest flat against the wood backers. Secure the drywall to the wood backers with 1½-inch drywall screws.
7. Apply a thin layer of plaster over the drywall patch. Make sure to cover the edges of the patch and the screw holes.
8. Apply a piece of drywall screen slightly larger than you patch over the plaster. Blend the screen into the plaster with a 4-inch drywall knife. Use additional plaster as needed. Allow adequate drying time.
9. Sand the plaster smooth with a sanding block to smooth out any rough edges before painting.
Tags: piece drywall, 4-inch drywall, 4-inch drywall knife, behind drywall, contractor adhesive