A roof damage inspection after wind is a walk done in a specific order, because wind does not load a roof evenly. Air moving across a building creates suction above the roof surface, and that suction is strongest at the corners, strong along the perimeter, and weakest in the open field. The inspection follows that gradient, starting where the forces were highest and the damage is most likely.
This is why an owner can stand in the middle of a roof after a storm, see nothing wrong, and still have a roof that will not survive the next one. The field is the part most likely to look untouched and least likely to tell you anything.
Why the edge decides the outcome
Roof attachment is specified in zones for this reason. Fasteners, adhesive or ballast are concentrated at corners and perimeters, because that is where uplift is greatest. A wind failure normally begins there: edge metal lifts, air gets under the membrane or the panel, and the uplift then works inward along the sheet.
So an intact centre and a disturbed edge is the normal pattern, not an odd one. It also means a repair that closes the visible opening without restoring the edge attachment has left the mechanism in place.
What the inspector works through
| Area | What is being looked for |
|---|---|
| Corners | Lifted or peeled membrane, loosened fasteners, failed adhesive |
| Edge metal and coping | Displaced sections, opened joints, missing cleats or fixings |
| Perimeter field | Billowing underfoot, opened laps, fastener heads standing proud |
| Walls and curbs | Counterflashing pulled open, upstand terminations lifted |
| Penetrations and plant | Displaced covers, hoods, screens and vent caps |
| Tile and panel roofs | Slipped or chipped tiles, disengaged clips, fastener backout |
| Drainage | Blocked outlets, distorted gutters, debris dammed at scuppers |
| Interior | Stains, drips and daylight at the deck underside |
Loosened attachment matters as much as anything missing. The post storm roof inspection checklist is the full version of this list, and it is worth having to hand before anybody climbs the ladder.
Reading the character of the damage
Two roofs can show the same defect for different reasons, so the inspector is reading pattern as much as severity. Wind damage is directional and clustered at exposed edges, and freshly broken surfaces look fresh. Age related failure appears evenly across areas with similar exposure and is weathered where it has opened.
An inspection cannot date a storm from the roof. What it can do is describe what is there, say which cause the evidence is consistent with, and record what would strengthen or weaken that reading. Storm damage roof inspection covers how that judgment is written up across hail, wind and water together.
The interior half of the walk
Water that got in during a windstorm is often driven rather than falling, which means it enters at a vertical surface and appears some distance from the opening. The deck underside, the wall head and the ceiling plane carry evidence the roof surface does not.
That evidence also fades. Stains dry, drips stop and the trail cools, which is why the interior should be looked at in the same visit rather than kept back for a second trip. Open the roof hatch, look along the deck underside with a light, and photograph anything wet before it dries. Roof leak inspection sets out how a source is traced back when the obvious entry point is not the actual one.
What the report has to record
Four things make a wind report usable: each finding photographed and located on a plan, the condition of the attachment across the roof rather than at the defects alone, the results of any moisture testing, and a plain statement of what could not be reached. How to read a roof inspection report covers how to test a document against that list.
What to do with it
Separate the urgent from the recorded. Loosened perimeter attachment and an open penetration belong in the first group even when nothing is leaking. What happens during a roof inspection describes the sequence this all sits inside, and roof inspection methods explains when moisture testing should be added to a wind walk rather than left for later.
Common questions
Why does wind damage show up at the roof edge first?
Because wind blowing across a roof creates suction above it rather than pressure on it, and that suction is at its highest where the air separates at a corner or an edge. Roof assemblies are designed and fastened in zones for exactly this reason, with the heaviest attachment at the perimeter.
- Wind lifts a roof rather than pushing it down
- Suction peaks at corners, then edges, then the open field
- Attachment schedules are denser at the perimeter to match
- Edge metal failing first allows the membrane to be peeled
- Intact field membrane says nothing about the edge condition
The sequence of a wind failure usually runs inward. Something at the edge lets go, air gets under the membrane or the panel, and the uplift then works along the sheet. That is why an inspector walks the perimeter and the corners first and in detail, and why a report that describes the open field at length and the edge in one line has looked at the wrong part of the roof. Ask specifically what was found at the corners.
Can an inspection tell whether wind caused the damage or age did?
Often, and it is done by reading the character of the damage rather than its severity. Wind failures are directional, concentrated at corners and edges, and leave fresh fracture surfaces or stretched material. Age related failures are spread across the roof, uniform in appearance and weathered where they have opened.
- Wind damage is directional and clustered at exposed edges
- Fracture faces from a recent event look fresh, not weathered
- Age failures appear evenly across equally exposed areas
- Fasteners pulled through rather than corroded suggest uplift
- Dated photographs before the event settle arguments quickly
An inspector cannot date an event from the roof alone, and an honest report says so. What a good one does is describe what was observed, say which cause the pattern is consistent with, and state what would make the finding stronger or weaker. That is more useful than a confident assertion, because a flat statement with no reasoning behind it is the first thing a reviewer discounts. Keep any earlier inspection photographs you have.
What does wind damage look like when nothing has blown off?
It looks like loosened attachment. Membrane that lifts or billows underfoot, fasteners standing above the deck, seams opened at a lap, coping joints pulled apart, panel clips disengaged, and tiles shifted out of line. None of those leak on the day and all of them have moved the roof closer to failing.
- Billowing or soft areas suggest fasteners that have let go
- Fastener heads standing proud of the deck are a direct sign
- Opened laps and lifted terminations are common after uplift
- Coping and fascia joints pull apart before they depart
- Shifted or chipped tiles indicate movement under load
This is the category of finding that decides whether the next storm takes the roof off. Nothing is wet, nothing is visibly missing, and the attachment that was holding the assembly down has been partly undone. It is also the category most often missed by a drive by look or a ground level glance, because it has to be walked and in some cases probed. Treat loosened attachment at a perimeter as urgent rather than noted.
Does a wind damage inspection cover flashing, gutters and rooftop equipment?
It should, because those are the components wind reaches first and the ones a repair quote most often leaves out. Coping, fascia, edge metal, counterflashing, gutters, equipment screens, unit covers and vent caps are all part of keeping water out, and all of them are lighter than the roof itself.
- Edge metal and coping take the highest uplift on the roof
- Counterflashing at walls and curbs can be pulled open
- Gutters and downpipes distort and pull from their fixings
- Equipment covers and screens become projectiles
- Vent caps and hoods are commonly displaced and never replaced
Ask for these to be listed individually rather than summarised. A displaced unit cover leaves a mechanical opening into the building, a lifted counterflashing lets water behind the membrane upstand, and neither appears in a scope written around square footage of membrane. Photographs of each item, located on a roof plan, are what turns them from an observation into something a contractor can actually price and an insurer can assess.
Will a wind damage inspection say whether to repair or replace?
A thorough one gives you what that decision needs without making it for you: how much of the roof is affected, whether the attachment is still sound elsewhere, whether water has entered the insulation, and what condition the assembly was in before the wind arrived. Those four answers settle most cases.
- Extent and location matter more than the number of defects
- Attachment condition across the rest of the roof is central
- Wet insulation changes the answer regardless of the membrane
- Remaining life before the event is part of the judgment
- Repair and replacement can both be priced from one report
Where damage is confined to a corner or a run of edge metal on a roof that was otherwise sound, repair is usually the answer and the report should make that easy to scope. Where uplift has loosened attachment widely, or testing finds water through the insulation, a patch reinstates a roof that is already failing. The report's job is to produce the evidence; the decision belongs to the owner, with the cost and the remaining life in front of them.