[quote=skerzz]This is a single family residence (two story). Struggling to understand how one flush would have done this; might have to fly out myself to check things out.[/quote]
it happened to me once. my tank for clogged and when it flushed , water ended up overflowing out and went underneath the baseboard on the sides and started dripping down the ceiling downstairs. If it’s just your own house, personally I wouldn’t worry about it so long as it was really just a one time one flush event. If on the other hand , the toilet was clogged and the fill valve was broken and caused water to overflow for several hours, then it’s a bigger problem. The official way to address this is to go through your insurance who will help you get a “water mitigation/restoration company”. I missed Servepro and Emergency Restoration Services before. Basically what these companies do is charge a lot to come to your house , cut open the drywall if necessary, stick blower heaters to dry out the inside of your drywall, spray an anti-mold solution (which is really just bleach ). You then need to find a drywall person to patch up and paint. The restoration company can do it, but they always charge a fortune and subcontract it out. Anyway, it isn’t cheap so you will want to run this through insurance….However again, if this is a SFH and it was only.one flush , you can probably just ignore what happened since the water probably has already dried .. To remove any water stains on the ceiling, mix 50/50 bleach and water into a paint tray and roll the bleach solution gently over the ceiling a few times. If that doesn’t work, finding s handyman to paint the sealing.
If this was a condo and you damaged the downstairs unit, I wouldn’t just ignore it.. I would get your insurance to get a water restoration company to dry out the ceiling of the owner downstairs. you will want official proof that water mitigation was done on their property correctly so you don’t get sued if mold ends up being a problem in the downstairs unit