The direct link between a covered storm event and the damage being claimed — and the foundation of every successful roof insurance claim in Colorado.
What Causation Means in a Roof Insurance Claim
Causation is the proven connection between a covered event — such as a hailstorm or high winds — and the specific damage you are claiming. It’s not enough to have a damaged roof and a recent storm. Your claim needs to establish that the storm caused the damage you’re claiming.
This sounds straightforward. In practice, it’s where most disputed claims fall apart — because insurance carriers regularly challenge causation as a way to reduce or deny settlements, particularly on older roofs where aging and storm damage can look similar on the surface.
Why Causation Is the Foundation of Your Claim
Every roof insurance claim rests on three things: a covered event occurred, the event caused the damage, and the damage falls within your policy’s coverage. Causation is the middle piece — and without it, the other two don’t matter.
When an adjuster attributes your roof damage to normal wear and tear, poor maintenance, or pre-existing conditions rather than the storm, they are disputing causation. They are not saying your roof isn’t damaged. They are saying the storm didn’t cause it. That distinction is critical because it determines whether your policy pays.
How Insurance Companies Challenge Causation
Colorado homeowners filing hail and wind claims most commonly encounter causation disputes in these forms:
Normal Wear and Tear
The adjuster classifies granule loss, cracked shingles, or surface damage as gradual deterioration rather than storm impact. This is the most common causation challenge on roofs over 10 years old. The argument is that time — not hail — caused the damage.
Pre-Existing Damage
The carrier claims the damage existed before the storm date listed on your claim. This is harder to dispute without dated inspection records or photos predating the storm — which is why documenting your roof’s condition before storm season matters.
Manufacturing Defect
Less common but occasionally cited — the carrier argues the damage resulted from a defect in the shingle material rather than storm impact. This shifts responsibility to the manufacturer’s warranty rather than your insurance policy.
Improper Installation
The carrier argues that damage resulted from faulty workmanship on a prior roof installation rather than storm force. This is most often cited when missing shingles or lifted edges are present without clear hail impact evidence.
How to Establish Clear Causation
Countering a causation challenge requires documentation that ties the specific damage pattern directly to the specific storm event. The stronger your causation evidence, the harder it is for a carrier to dispute.
Obtain Official Storm Data
NOAA storm reports, hail size data from Verisk or CoreLogic, and weather service records for the exact date of loss establish that a qualifying storm occurred at your property’s location. This is your starting point — without confirmed storm data, causation is difficult to prove.
Document Consistent Damage Patterns
Hail damage leaves identifiable patterns — impact marks at consistent angles, granule displacement concentrated in exposed areas, bruising on soft metals like gutters and vents. A professional inspection report that identifies and photographs these patterns ties the damage directly to storm impact rather than aging.
Photograph Collateral Damage
Hail and wind that damage a roof also damage other things — gutters, downspouts, HVAC units, window screens, siding, and painted wood surfaces. Collateral damage on multiple surfaces corroborates storm severity and makes a wear-and-tear argument much harder to sustain.
Get a Professional Inspection Report
An independent roof consultant’s written report that explicitly connects observed damage to the storm event — citing impact patterns, affected materials, and storm data — is the single most effective tool for establishing causation in a disputed claim.
Maintain a Roof Inspection Record
Dated pre-storm inspection records showing your roof was in good condition before the loss directly counter pre-existing damage arguments. Even a simple dated photo set from before the storm can shift the burden back to the carrier.
Causation vs. Depreciation
These are two separate issues that often get conflated in claims disputes. Causation determines whether the storm caused the damage and whether your policy covers it. Depreciation determines how much your policy pays based on your roof’s age and condition.
A carrier can legitimately apply depreciation to a valid storm damage claim — that’s a coverage calculation, not a causation dispute. But using your roof’s age to deny causation entirely is a different argument, and one worth challenging. An old roof can still sustain new storm damage.
Concurrent Causation and Older Roofs
When both a covered cause (hail) and an excluded cause (wear and tear) contributed to the same damage, you have a concurrent causation situation. Some Colorado policies include anti-concurrent causation clauses that allow carriers to deny claims when any excluded factor contributed — even if storm damage was the primary cause.
Colorado courts have limited the application of these clauses in some cases, but they remain a real risk on older roofs. If your denial cites concurrent causation, the specific policy language and how it has been interpreted in Colorado is worth a professional review.
Common Causation Questions
What if the storm was small — does causation still apply?
Yes. Hail damage depends on hail size, wind speed, impact angle, and roofing material — not just storm severity. A storm that produces 1-inch hail can cause legitimate functional damage to an asphalt shingle roof. The key is documenting the specific storm data and connecting it to the damage pattern observed.
My roof is 18 years old. Can the carrier deny causation based on age alone?
Age alone is not a valid basis for denying causation under most Colorado policies. Carriers can use age to calculate depreciation, but an 18-year-old roof that sustained hail impact has a covered claim — the storm caused new damage regardless of the roof’s prior condition. If your denial cites age as the causation reason, that’s worth challenging.
What if there were multiple storms — how do I prove which one caused the damage?
Multiple storm events in the same season create a more complex causation picture. Each storm is a separate date of loss with its own coverage implications. Storm data services can help identify which storms produced damaging hail at your specific address, and a professional inspection can sometimes identify damage layers consistent with multiple impact events.
Can an adjuster deny causation without inspecting the roof?
Technically no — carriers are required to conduct a reasonable investigation before denying a claim. A denial issued without a physical inspection, based solely on satellite imagery or a desk review, is worth challenging. Request a field adjuster visit and document that request in writing.
How Claim Advocacy Helps Establish Causation
Causation disputes are won or lost on documentation. Having someone who understands what evidence is needed — and how to present it — changes outcomes.
- Professional inspection reports — written documentation explicitly connecting observed damage patterns to the storm event
- Storm data procurement — official hail size, wind speed, and storm path data for the exact date of loss at your specific address
- Collateral damage documentation — systematic photography of all storm-affected surfaces to corroborate severity
- Carrier response review — identifying when a causation denial doesn’t hold up against the actual policy language and evidence
- Supplemental claim support — when tear-off reveals additional damage, connecting it to the original storm event before the carrier can classify it as pre-existing
Related Glossary Terms
- Concurrent Causation
- Date of Loss
- Functional Damage
- Pre-Existing Condition
- Collateral Damage
- Documentation
- Denial
- Normal Wear and Tear
Need Help Proving Causation on Your Roof Claim?
Causation disputes are among the most winnable battles in a roof insurance claim — when you have the right documentation. If your carrier is attributing storm damage to aging or pre-existing conditions, a professional inspection report can change that conversation.
📞 Call to discuss your claim: (719) 210-8699
📧 Email: gerald@winik.io