When patching plaster walls you will need to first gather the tools for the job. The use of regular drywall tools such as compound (plaster repair), sponge, tape measure, ruler, and a putty knife in any size you are comfortable with for applying the repair compound will make the job go much smoother. However, the blade of the knife should be larger than the circumference of the hole itself, to ensure proper application.
Now you are ready to take a look at the hole you will be repairing. If the hole is less than 2” in diameter you can begin the repair, if the hole is larger than 2” you may need a sheet of plaster-board.
For the first timer it may be best to practice on a small hole that ca easily be hidden behind some type if furniture. With this small hole located you can mix your plaster repair compound and get started.
Step one is to place a fair amount (not to much) of the compound on the knife, and begin filing in the hole with even strokes. Holding the knife at a thirty degree angle will help with the application. Take extra care not to place too much pressure on the blade strokes as you apply the repair compound to the plaster wall as this will lead to a depression in the surface.
Step two, after several light and steady strokes there may be some excess material around the edges. You can take care of this with the putty knife and with the damp sponge. This will leave you with a smooth surface.
In the event the hole is larger than 2” the above mentioned method may not be affective, because the compound will need something to bind itself to. You may wish to use either of these two ways to repair your plaster walls.
Getting the Job Done:
- Step one is to use a straight edge ruler to draw a square or rectangle around the hole, so that the hole is centered in the shape. Cut this outline out with a hand knife or Key Hole saw. Be careful not to break it, since this is your guideline for the new patch.
Step two is to take this piece and lay it on the new sheet of plaster-board you have. Trace this shape with a 2” frame around it. This frame will allow you extra support with the placement.
Step three is to cut this piece out, when you have cut it free you will remove the plaster from one side of the frame section (not the original shape) and the paper from the other side. It is this 2” frame of paper that will work as a lip to support your patch.
Step four is to take the plaster compound and apply it all along the frame, now place the patch in the wall and hold wile the compound has a few minutes to set.
Final step will be to use a small additional amount of the compound around the paper and using the knife to smooth the edges down. Again the damp sponge can be used to get the best surface.