Step 2 · Remove Old Flange and Clean Area
With the toilet removed, use a putty knife to scrape the old wax ring off the flange and floor. Dispose of the wax. Stuff a large rag into the drain pipe opening to block sewer gases and prevent tools from falling in. Assess the broken flange. Remove any screws holding it to the subfloor with a drill or screwdriver. If the flange is PVC and glued to the pipe, you may need to carefully break it away from the pipe using a hammer and a small chisel. Work cautiously to avoid damaging the drain pipe itself. Pry the broken pieces away with a pry bar until the top of the drain pipe is fully exposed and accessible.