Mechanical Damage
Also called: foot traffic damage, installer damage, non-storm damage
Mechanical Damage is damage caused by physical contact rather than by weather: boots, ladders, tools, satellite dish installations, or previous repair work. It is not a covered peril, and adjusters look for it specifically because it can resemble storm damage at a glance.
What it means
Mechanical damage is damage from physical contact. Somebody walked on the roof, dropped a tool, dragged a ladder across it, fitted a satellite dish, cleaned the gutters in boots, or lifted shingles to run a cable and did not seat them properly afterwards.
It is real damage, and it can be extensive. It is simply not weather, so it is not a covered peril, and a claim resting on it will not be paid.
Why adjusters look for it specifically
Because at a distance it resembles the thing they are being asked to pay for.
Scuffed granules where a boot slid, a crushed area where a ladder rested, a broken tab where something was dropped: these produce surface damage and granule loss that a casual inspection could read as impact-related. Adjusters are trained on the distinction and they check for it early, because finding it changes how they read the rest of the roof.
The pattern is what gives it away. Mechanical damage follows human activity. It runs in lines and paths. It clusters around the things people go to the roof for: vents, flues, aerials, mechanical equipment, valleys where debris collects. It concentrates near access points.
Hail does none of that. It falls where it falls, randomly across whatever is exposed, and it dents the soft metals in the process. Foot traffic does not dent a gutter or mark a vent cap.
Why disclosure is the right posture
Because it will be found, and the cost of it being found by the adjuster rather than disclosed by the contractor is disproportionate.
A roof carrying both hail damage and foot traffic damage is completely ordinary. An adjuster who identifies the mechanical damage and finds it included in the contractor’s storm scope now has a reason to scrutinise every other line, and to discount the contractor’s judgement generally. A contractor who has already separated the two, and scoped only the storm damage, has demonstrated exactly the judgement the adjuster is trying to assess.
That credibility is worth more over a season than any single line item.
When somebody else should pay
Where the mechanical damage was caused by an identifiable third party, there may be a liability route rather than a coverage route. A previous contractor whose work damaged the roof, an installer who fitted equipment badly, a service provider who was careless: these are claims against a person, not against a storm, and they may involve subrogation if an insurer becomes involved.
That is a genuinely different process and it belongs in a different conversation from the storm claim.
Common mistakes
Including it in a storm scope is the serious one, and it costs far more than it gains.
The second is failing to ask the homeowner what work has been done recently, which is information they will give freely and that nobody else has.
The third is assuming its presence sinks the claim. It does not; misrepresenting it does.
On the call
If a caller mentions recent work on or near the roof, solar panels, a satellite dish, gutter cleaning, an aerial, note it. It does not disqualify a claim, but an adjuster will find it, and a contractor who already knows about it is in a far better position than one who is surprised on the roof.
This is how our agents handle it on storm appointment calls and day-to-day roofing answering service intake.
Questions people ask about mechanical damage
- How do adjusters tell mechanical damage from hail?
- Mainly by pattern. Contact damage follows paths and clusters where people walk or work: around vents, along ridges, near equipment, in lines from a ladder point. Hail lands randomly across exposed slopes and is corroborated by dents on soft metals that foot traffic does not produce.
- Does mechanical damage ruin a hail claim?
- Not by itself. A roof can carry both, and adjusters routinely separate them. What damages a claim is a contractor presenting mechanical damage as storm damage, because it undermines the credibility of every other item in the scope.
- Can someone else be made to pay for mechanical damage?
- Potentially, where an identifiable third party caused it, such as a contractor whose work damaged the roof. That is a liability question and may involve subrogation if an insurer becomes involved. It is a different route from a storm claim, not a variation of one.
Back to the full roofing claims glossary.