How To Fill A Hole In Wall With Plaster. I recommend you get a pre mixed general purpose interior filler for this job. We will cover both scenarios.
The first layer is a rough coat, so should be a little below the surface of the wall and does not need to be neat or smooth.
Through willful ignorance, we hadn't even known quite how big it was all the way through. Or, if the lath behind the old plaster is in good condition then vacuum the holes and spray them with plaster conditioner. Repair a hole up to 150mm in diameter; Using the plaster patching compound, start to patch the hole.