Question

How far down do I have to chisel?

Community Answer

If you're asking how deeply you need to chisel, plaster ranges in thickness from 5/8" to slightly more than an inch. If it's on top of brick, it shouldn't be more than an inch (2.5cm). However, if you were asking where on the wall to chisel, that is up to you. You may prefer to choose a low corner that isn't easily visible just in case you get into it and decide there is no brick or that the brick that is there is too bad to use. This way you can patch it up and it won't be quite as noticeable. Equate it to using a test strip of paint. It lets you see the overall look, but is still easy to clean up.