IQHab › United States › Water & Mold › Water Stain On Ceiling — Causes & Fixes
Water on the ceiling
A stain or drip on the ceiling is a sign of a leak above. Act fast to avoid mold and structural damage.
Likely causes
| Cause | Likelihood | Severity | Cost |
|---|---|---|---|
| Roof leak | high | Medium | $200–$2,000 |
| Plumbing leak | medium | Medium | $300–$2,500 |
| AC condensate drain | medium | Low | $100–$500 |
| Bathroom leak above | medium | Medium | $200–$1,500 |
Safe checks you can do
- Check the ceiling and note if the stain is growing.
- Find the source above (roof, bathroom, or AC unit).
Emergency signals
- Active dripping or sagging ceiling
- Stain spreading quickly
- Mold smell or dark patches
Next action
If it's actively dripping or the ceiling is sagging, address the source now and call a plumber or water damage pro. If it's a small, stable stain, find and fix the source, then dry the area to prevent mold.