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Emergency · Attic Leak Emergency

Water in Your Attic — Roof Leak Emergency Response

Attic leaks soak insulation and ceiling joists invisibly. Contain drips, document damage, and get moisture mapping before mold colonizes your ceiling cavity.

(888) 840-6512Mold window: 48 hours

Emergency checklist

  1. Place buckets under active drips in rooms below — move furniture away from wet ceilings

    Waterlogged ceilings can collapse — avoid standing under bulging drywall

  2. If safe, inspect attic for active dripping — look for wet insulation, stained rafters, and daylight through roof

    Do not walk on wet attic decking — structural weakness risk

  3. Photograph attic wet spots, stained insulation, and ceiling stains from below before any cleanup

    Insurance needs pre-mitigation evidence

  4. Do not run attic fans if electrical wiring may be wet — cut power to affected circuits

    Attic electrical + water = electrocution hazard

  5. Call restoration for moisture mapping — attic cavities hide water that causes ceiling mold

    Insulation retains moisture for weeks without commercial drying

  6. Schedule roofer to fix source — restoration handles drying while roofer repairs exterior

    Fixing roof without drying attic guarantees mold

Typical cost range

$800$6,000

Full cost breakdown

Mold growth timeline

Mold Growth Clock

What happens hour by hour after water damage

0h

elapsed

0h6h12h24h48h72h1wk
or click any marker
0h

Water Intrusion

lowHour 0

Water enters the structure. Clock starts NOW.

Recommended Action

Shut off water source, move valuables off floor, begin documentation with photos/video.

Next milestone: Absorption Begins at 1 Hour

All Milestones

Attic Leak Emergency FAQ

Is attic water damage covered by insurance?
Yes if caused by sudden roof damage (storm, fallen branch). Gradual roof deterioration leaks may be denied as maintenance. Document the damage date and cause.
How fast does mold grow in a wet attic?
Attics with poor ventilation can support mold within 24–48 hours on wet insulation and wood sheathing. Professional drying and possible insulation removal are often required.
Should I remove wet attic insulation myself?
Only if Category 1 water and caught within hours. Wet fiberglass or cellulose insulation must be removed if contaminated or if drying cannot reach dry standard — professionals handle this safely.
How to Replace a Main Shutoff Valve | Ask This Old HouseThis Old House walks through locating, operating and replacing the main water shutoff valve — the most important emergency skill for limiting water damage. Read the full guide →