Water Stain on the Ceiling
A ceiling water stain comes from a roof leak, a plumbing leak from a bathroom above, an overflowing AC drain pan, or attic condensation. Find and fix the source first, then seal the stain with a stain-blocking primer. Fixing the drywall and paint usually costs $250 to $1,000, plus the cost of the leak repair.
Typical pro cost
$250 to $1,000
- Urgency
- Fix soon
- DIY difficulty
- Moderate
- Time to fix
- 1 to 3 days including drying
- Prices
- US typical range
Last reviewed September 2026
Signs it's this problem
- Yellow or brown ring on the ceiling
- Stain grows after rain
- Stain appears below a bathroom
- Sagging or soft drywall
- Musty smell or mold spots
Common causes
Roof leak
Stains that grow after rain, often near chimneys, vents or skylights.
Plumbing leak
Stains under bathrooms or kitchens that appear when water is used upstairs.
AC condensate overflow
Stains near the air handler in the attic, mostly in summer.
Attic condensation
Spotty stains in winter from moist air condensing on the roof deck.
Ice dams
Stains near exterior walls after snow and freezing weather.
How to fix it, step by step
- 1
Note when the stain grows: after rain, after showers, in summer or in winter.
- 2
Check the attic above the stain with a flashlight for wet wood, insulation or drips.
- 3
If it is under a bathroom, check the toilet base, tub caulk and shower valve for leaks.
- 4
Fix the source first. The roof, plumbing or AC drain repair comes before any cosmetic work.
- 5
Let the area dry completely, using fans and a dehumidifier, and replace soft or sagging drywall.
- 6
Seal the stain with an oil-based or shellac stain-blocking primer, then repaint.
Tools and materials
- Flashlight
- Moisture meter
- Stain-blocking primer
- Ceiling paint
- Drywall patch kit
Approximate DIY cost: $30–$100
Call a pro when
- The ceiling sags or feels soft
- There is mold larger than about 10 square feet
- You cannot find the source of the water
Water Stain on the Ceiling cost
| Job | Typical cost |
|---|---|
| Ceiling drywall repair and paint | $250–$1,000 |
| Roof leak repair | $150–$1,500 |
| Plumbing leak repair | $150–$600 |
| Mold remediation (small area) | $500–$2,000 |
Ranges are typical US prices compiled by FixHomeCost. Prices vary by region, home and contractor, so compare 2–3 local quotes.
Common questions
Is a water stain on the ceiling an emergency?
Not always, but it means water got in. If it is spreading, sagging or near a light fixture, treat it as urgent.
Will a ceiling water stain go away on its own?
No. The stain stays even after it dries, and painting over it without a stain-blocking primer lets it bleed through.
How do I know if a ceiling stain is old or active?
Check it with a moisture meter or press gently: a damp, soft or cool spot is active. Draw a pencil line around the edge and see if it grows.
Does homeowners insurance cover ceiling water damage?
Sudden leaks, such as a burst pipe or storm damage, are often covered. Slow leaks and poor maintenance usually are not.
Related guides
This is general information, not a professional inspection. See how we research costs.