Does anyone have any advice or words of wisdom for the following project? Specifically, my questions are as follows:
Is this most likely just a matter of replacing the entire upstairs commode / toilet assembly?
Is that something that is easily done DIY? Or is it more complicated than it first appears? (It seems I can just purchase a commode assembly from Home Depot and remove the bolts in the old assembly and replace? (There might also be some sealing involved too to keep everything watertight I'm assuming.)
Should I call a plumber to be on the safe side? If so, how much might they charge?
Or, do I need a contractor because there is water damage in the floor boards? Do I need to replace the floorboards or can I just patch the ceiling drywall?
When the upstairs toilet is flushed, water apparently leaks thru the floorboard onto the ceiling in the room downstairs. The water damage in the floorboard suggests there is a plumbing leak above the floor.
The upstairs toilet shows evidence of leaking.
Fig. 1. Close up view of hole in downstairs ceiling caused by leak in upstairs toilet. Notice water damage to upstairs floor suggests leak begins above the visible piping.
Fig. 2. Medium angle view of Fig. 1
Fig. 3. Wide angle view of Fig. 1 showing room context for perspective.
Fig. 4. Toilet in upstairs bathroom. Blue stain on floor comes from toilet bowl water coloring tablets suggesting leak at base of the toilet.