If you have a repair to be made, this next step is very important. While it might appear like each service provider is going to have the exact same option, they might not, depending on the repair that has to be made. So when you have them out to offer you a quote for the sheetrock work and repair, ask them what they particularly plan to do.
Cut the hole or crack into a square or rectangle. It is too much work to cut a circle. Add the backer board by pounding a nail in the center to hold it while you in fact protect