09/03/2026
An upstairs bathroom leak is the one that gets expensive fast, and it has nothing to do with how much water there is.
Gravity does the damage. Water leaves the bathroom and works down through everything under it:
➡️ Bathroom subfloor soaks and starts to swell
➡️ Ceiling below stains, sags, then lets go
➡️ Insulation packs down wet and stays wet
➡️ Wall cavities take on water two rooms away from the leak
One toilet supply line can wreck three levels of a house. That is why our team at ProSteam checks the floor below before we open anything up.
https://www.prosteamstlouis.com/services/water-damage-restoration