Remove the Old Fixtures and Components
The first thing you need to do after you have a plan is to start taking down the old fixtures and components. If there is a mirror, tackle it first, but be careful because if it's glued on, the job can be a little tricky. Begin by running a 5-in-1 tool along the edge of the mirror. If the room has been painted since the mirror was installed, the dry paint could make it more difficult to come off. By using a flat pry bar, start at one end, carefully start prying the top edge of the mirror, making sure not to apply too much pressure. Move along the top edge and simply pull the mirror loose in small amounts.
Note: In addition to the brackets that hold the mirror, it may also be attached with mirror mastic. You must be extremely careful removing a glued-on mirror to avoid breaking the glass.