Wind is the single most common reason homeowners file insurance claims — 42.5% of all claims in 2023, according to the Insurance Information Institute. Yet a Weiss Ratings (2023) analysis found that the 13 largest homeowners insurers closed 47.5% of their 3.9 million claims without paying a dollar.
If your roof is torn up, your siding is gone, and your insurer is telling you the damage was “pre-existing” or offering a fraction of what repairs actually cost — that gap between what happened to your home and what your insurer is willing to pay is not unusual. It is the starting point for most wind damage insurance disputes in Illinois.
This guide breaks down how Illinois law treats wind damage claims, how to tell whether your insurer’s denial has any basis, and what options you have when a claim gets denied or underpaid.
How Wind Damage Coverage Works in Illinois
Most Illinois homeowners carry an HO-3 “all-risk” policy for the dwelling — covered for any sudden, accidental loss unless the policy specifically excludes it. Wind is generally not excluded.
The legal framework is burden shifting. You show the policy existed, you had an insurable interest, and the loss was fortuitous. Once you clear that bar, the insurer must point to a specific exclusion and prove it applies. They cannot assert wear and tear or neglect without evidence to back it up.
The Real Fight in Illinois Wind Damage Claims: Storm Damage or Pre-Existing Wear?
The most common way insurers deny wind damage claims is not by disputing that a storm occurred. It is by arguing the damage was already there — caused by age, poor maintenance, or normal deterioration. Understanding what wind actually does to a roof, and how it physically differs from aging, is the key to evaluating whether your insurer’s position holds up.
What wind damage looks like
Wind creates uplift pressure on a roof, but that pressure is not uniform. It is highest along windward corners, rakes, eaves, and ridges — and that is where damage initiates.
According to research by Haag Engineering, wind produces four primary modes of shingle damage:
- Creasing — tabs fold and crease from uplift force
- Flipping — tabs lift and bend back on themselves
- Tearing and removal — shingles tear away, sometimes with fasteners pulling through the mat
- Debris abrasion — airborne material strikes and damages shingle surfaces
Multiple modes often appear on the same roof. The damage concentrates on the windward side and works inward from the edges. If your roof shows torn, creased, or missing shingles clustered along corners, eaves, and ridges — that pattern is consistent with wind.
Shingle conditions insurers point to when they claim the damage is not from wind
When an insurer denies a wind damage claim based on “pre-existing conditions” or “wear and tear,” they are often pointing to shingle conditions that develop over time — not during a storm. These conditions exist on many roofs, and insurers use them to argue the damage you are claiming was already there before the wind event:
- Cupping and clawing — corners curling upward (cupping) or downward (clawing) as asphalt progressively shrinks over time. These are age-related conditions, not evidence that wind did not also damage the roof during a storm.
- Shingle splitting — horizontal, vertical, or curved cracks caused by thermal expansion and contraction combined with insufficient mat strength. Torn pieces from splitting typically remain bonded to underlying shingles. The presence of splitting tells you the roof is aging — it does not tell you whether wind also caused separate damage.
- Unbonded overlaps on multiple slopes — poor sealant adhesion combined with thermal cycling causes overlapping shingles to lose their bond. Insurers may point to unbonded shingles as evidence the roof was failing before the storm. But the pattern matters: if unbonded overlaps appear on each directional slope of the roof, that is a sign of aging, not wind. Wind does not come from multiple directions with just enough force to unbond overlaps on every slope.
The presence of any of these conditions does not mean wind did not also damage the roof. An aging roof and a wind-damaged roof are not mutually exclusive — and the insurer still bears the burden of proving its exclusion applies to the loss you are claiming.
Why “old roof” does not mean “not wind damage”
As asphalt shingles age, sealant strips deteriorate and lose bond strength. The expected life of asphalt shingles is approximately 20 years. An older roof with degraded sealant is more vulnerable to wind — shingles with little or no remaining bond can be lifted in relatively low wind speeds.
But vulnerability is not causation. A roof that was aging when a storm hit does not mean the storm did not cause the damage. The insurer still bears the burden of proving its exclusion applies.
Illinois follows the efficient proximate cause doctrine as the default: when a loss involves both a covered peril (wind) and an excluded peril (wear and tear), coverage exists if the covered risk was the predominating cause that set events in motion. Some policies contain anti-concurrent causation (ACC) clauses that can override this — in Bozek v. Erie Ins. Grp., 2015 IL App (2d) 150155, 46 N.E.3d 362 (2d Dist. 2015), the Second District enforced such a clause. But when wind alone drove the damage and aging was simply a background condition — not an active concurrent force — the ACC clause often does not apply. There may be no concurrence of causes if only one cause was actually at work.
Expert testimony distinguishing the physical markers of wind — creased tabs, uplift patterns on windward edges, mat failure at fastener points — from the markers of aging — cupping, clawing, splitting, unbonded overlaps across all slopes — is what separates a paid claim from a denied one. And if the exclusion language your insurer cites is vague, Illinois courts resolve that ambiguity in your favor under the contra proferentem doctrine.
When Your Insurer Lowballs the Repair Cost on an Illinois Wind Claim
Residential roofing claims topped $31 billion nationally last year — a roughly 30% jump from two years earlier, according to Verisk (2024). Meanwhile, the BLS/AGC (2026) price index for asphalt roofing materials climbed 38.4% from February 2020 to January 2026. Insurers often base estimates on outdated pricing. Your contractor quotes today’s rates. The insurer’s desk estimate may not.
Most property policies let either side demand appraisal when they disagree on the dollar value of the loss. Each side picks an appraiser, the two pick an umpire, and if they cannot agree, the umpire breaks the tie. In Xiang Zhao v. State Farm Fire & Cas., Co., 2025 IL App (2d) 240723, 266 N.E.3d 1229 (2d Dist. 2025), the court held that once an insurer concedes coverage and issues partial payment, any remaining fight over whether that peril damaged additional components is a valuation question properly decided through appraisal. Under 215 ILCS 5/397.05, if the appraisers or umpire uphold your full amount, the insurer pays your appraiser’s fee and the umpire’s fee.
Frequently Asked Questions
Does the age of my roof affect whether wind damage is covered?
The age of your roof does not change whether wind is a covered peril under your policy. What it can affect is the insurer’s argument. Older shingles with degraded sealant are more vulnerable to uplift in lower wind speeds — and insurers use that fact to argue the damage was from deterioration, not from the storm. But an older roof that sustains wind damage is still wind damage. The question is what caused the loss, not how old the roof was when it happened.
Can my insurer deny my wind damage claim by calling the damage “cosmetic”?
Some insurers classify wind damage — particularly creased or bruised shingles that have not yet torn away — as “cosmetic” and argue the shingles are still functional. But creased and flipped shingles have compromised sealant bonds and reduced wind resistance, meaning they are more likely to fail in the next storm. Whether damage that weakens the roof’s protective function is truly “cosmetic” is a dispute over the amount of loss, and your policy language controls what qualifies as covered damage.
What if my contractor’s repair estimate is much higher than my insurer’s?
This is one of the most common disputes in wind damage claims. Your contractor prices materials and labor at current local rates. The insurer’s estimate may rely on software using regional averages that lag behind actual costs — with asphalt roofing materials up 38.4% since February 2020, that gap can be substantial. If you and your insurer cannot agree on the dollar amount, most policies allow either side to demand appraisal, where independent appraisers determine the value of the loss.
Talk to an Illinois Insurance Coverage Attorney
If your wind damage insurance claim has been denied or underpaid, an attorney who handles first-party property insurance litigation can evaluate whether the insurer’s denial holds up under your policy language and Illinois law — or whether they are relying on an exclusion they cannot actually prove applies.
Mag Mile Law represents Illinois policyholders against insurance carriers in coverage disputes involving wind, hail, fire, and water damage claims. Attorney Steven Mikuzis is a trial lawyer and licensed insurance producer whose professional focus is property and casualty insurance coverage. He has represented policyholders against carriers in actions involving bad faith claims handling and wrongful denial across fire, explosion, hail, windstorm, water damage, and building collapse claims. Steven earned his J.D. cum laude from Chicago-Kent College of Law, is admitted to practice in the U.S. District Court for the Northern District of Illinois and the Seventh Circuit Court of Appeals, and has been recognized twice by Chicago Magazine as an “Outstanding Young Lawyer.” He is also the principal of Power Risk Management Services, LLC, an insurance agency named a Best Practices Agency in 2025 — one of 11 in Illinois — which means he understands how policies are written, priced, and evaluated from the inside.
Mag Mile Law has offices in Chicago (535 N. Michigan Ave.), Elmhurst, and Northbrook. To discuss a denied or underpaid wind damage claim, call 773-644-9593 or email in**@********aw.com.
