Storm Damage Restoration: Costs, Timeline & What to Do

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What Is Storm Damage? (Category 1–2 (IICRC S500) depending on entry point and duration)

Water damage from roof damage from wind or hail allowing rain intrusion, window and door frame failures, storm surge, and overwhelmed drainage systems. Storm water entering through compromised roof or walls can rapidly saturate attic insulation, ceiling drywall, and wall cavities before becoming visible from inside.

Typical cost range: $2,500–$20,000. Storm damage costs depend heavily on roof damage extent. Roof repair/replacement ($5,000–$25,000) is often the largest component, followed by interior water mitigation and drywall replacement.

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How Storm Damage Spreads — Hour by Hour

  • 0–6 hours: Rain water saturates attic insulation and ceiling drywall from above.
  • 6–24 hours: Water wicks down wall cavities to electrical outlets and baseboard areas.
  • 24–48 hours: Mold risk begins. Ceiling drywall may fail. Water damage visible on interior walls and floors.
  • 1 week: Hidden moisture in wall cavities and insulation; mold likely present even if not visible.

⚠ Cost of Waiting

Every hour without professional extraction increases structural damage and mold risk. Remediation costs rise significantly after the 24-hour mark (IICRC S520). Calling sooner almost always reduces your total restoration cost.

Health & Structural Consequences

Storm water entering through roofs begins as Category 1 but quickly becomes Category 2 after contact with ceiling insulation, which harbors bacteria and dust. Any damage from storm surge or river flooding is Category 3.

Insurance Coverage — What's Covered

HO policies cover storm damage from wind and hail. Storm surge (seawater flooding) is covered by NFIP. Flooding from rainfall accumulating on the ground is NFIP only. Know which type of storm damage you have before filing to ensure you file under the correct policy.

Use our Insurance Claim Calculator to estimate your coverage and identify any gaps before filing.

What to Do in the First 24 Hours — Step by Step

  1. Tarp or board the roof opening immediately to stop ongoing water intrusion.
  2. Extract any standing water and place fans to begin air movement.
  3. Document all damage before beginning permanent repairs.
  4. File with HO insurer for wind/rain damage; file with NFIP for flood/storm surge.
  5. Get a roof inspection from a licensed roofing contractor as part of the damage assessment.
  6. Hire IICRC-certified restoration contractor for interior water damage mitigation.

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Frequently Asked Questions

Does homeowners insurance cover storm water damage?
Yes — for wind-driven rain entering through damaged roofs, walls, or windows. Not covered: flooding from ground-level water accumulation (NFIP), storm surge (NFIP), or sewer backup (requires rider).
How do I know if I have hidden storm water damage?
Signs: water stains on ceilings expanding over days after a storm, paint bubbling, musty odor, increased allergy symptoms indoors. An IICRC-certified inspector with thermal imaging can detect hidden moisture behind walls and ceilings.
Can I file a storm damage claim after the storm has passed?
Yes — most HO policies allow claims within 1–2 years of the loss date (varies by state). However, you must prove the damage was caused by a specific storm event. NOAA storm data and weather reports serve as evidence. Report as soon as damage is discovered.
What is the typical storm damage deductible?
Many HO policies in high-risk states (Florida, Texas, coastal markets) have separate wind/hail deductibles of 1–5% of the home insured value, separate from the standard deductible. A $300,000 home with a 2% wind deductible has a $6,000 wind deductible.

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