It's a little bit different if you want to patch a hole in drywall ceiling than sheets used for wall. Usually drywall ceilings are thicker than wall sheets. Therefore, the repairing process is also different. But it's almost as simple and quick as wall sheets patching.
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Of course drywall ceilings are less vulnerable than the wall sheets, however if you encounter with such problem here we're going to train you for solving that problem with ease.
First check this list of materials and tools that you'll need for this project:
- Ceiling drywall for patching hole
- Drywall compound
- Drywall saw
- Drywall screws
- Drywall tape
- Hand sander
- Tape measure
- Utility knife
- Wooden cleats/braces for attaching the patch
Step 1: Measuring
You'll need to fit the damaged area into a square. So try to measure a square which can contain the damaged area completely and reaches to the farthest point of it.
Step 2: Squaring up the hole
Now try to cut that square around the damaged area. Again it has to cover the hole damaged area completely, using the measurement from previous step. Cut the square with your drywall saw smooth any rough edge with utility knife.
Step 3: Cutting out a square drywall panel
Before you cut the new panel, if you feel any difference in thickness of the new panel and your ceiling drywall then maybe you are using a sheet meant for the wall. If it has the same thickness then it's OK and you can start cutting again in same measurement from first step. For testing in which that the new panel fits in the ceiling, try to put it in.
Step 4: Installing Wooden cleats
You need two wooden boards as a supporting anchor for new panel which you'r trying to install. First insert them in the square and then install them with screws. It is important to overlap them by about two inches or even half of it so they hang on tightly and become a reliable backing for new panel.
Use at least two screws for each one (even better if three).
Step 5: Installing new drywall panel
Put the new panel into the square and secure it with drywall screws. Use one in each corner and make it tight to the backing boards.
Step 6: Tape the joints of the new installed drywall panel
Use tape to cover all the joints. Try not to overlap the tapes. So cut precise lengths and widths.
Smooth the tape out using a medium size utility knife. After that use a smaller joint knife to go over it. Then apply excess compound. Try to move it towards the outside edges of the tape. Finally use larger knife to go over it again and press lengthwise with long strokes.
Step 7: More compound coats
Use your large utility knifes to apply more coats of drywall compound. Try to cover all the square and some of it's around area. Let each compound dry before applying the next and do it as smooth as you can so you don't have to sand it much. Compound layers should be thin and flat. And each layer must cover more area than the previous one.
Step 8: Sanding, Priming and Painting
After applying compounds you can start to sand it. But before that let it fully dry over night. Use a Hand sander to smooth out all the area. You can eve use a wet sand sponge for better sanding.
After sanding the area (if you used wet sponge , let the area air drys first), prime it. And after that you can paint the area. Take a sample to local color stores for color match and paint the exact constant color.