Wind damage to a roof: the signs, and the one nobody sees

How wind actually damages a roof

Wind does not simply push on a roof. As air accelerates over the ridge it creates lift on the surface below — the same effect that lifts a wing. That lift gets under the leading edge of a shingle and peels upward.

This is why wind damage is not evenly distributed. It concentrates where lift is greatest and where edges are exposed:

• Ridges and hips, where the airflow accelerates
• Rakes and eaves, the exposed edges of the roof
• Corners, where turbulence is highest
• The elevations facing the wind, and often the leeward slope just past the ridge
• Anywhere the seal was already weak — an old roof, a previous repair, or a slope that never sealed properly because it was installed in cold weather

Because it is directional and geometric rather than random, wind damage looks quite different from hail damage on the same roof — see the comparison table on the storm damage hub.

Signs of wind damage

1. Missing shingles or missing tabs, exposing the underlayment or the deck.
2. A horizontal crease across a shingle face — the mark left where a shingle was lifted and folded back on itself.
3. Tabs that no longer lie flat, or a wavy line along a course where the seal has gone.
4. Displaced or missing ridge caps.
5. Lifted or damaged flashing, especially at walls and chimneys.
6. Shingle pieces or whole tabs in the yard, or in a neighbor's yard downwind.
7. Damaged fencing, downed limbs and debris impact, which corroborate the wind event itself.
8. Exposed nail heads where a shingle above has moved.

What wind damage looks like

As on our hail page, this is an illustration rather than a photograph. This site is a referral service with no roofing work of its own to photograph, and we are not going to present licensed stock imagery as our own work. What matters here is what the defect means anyway.

1. The crease

A shingle that was lifted and folded back carries a crease across its face. The mat fractures along that fold, and the fracture does not heal. The shingle may drop back down and look almost untouched from a distance — which is exactly why creasing is a recognized wind-damage indicator that inspectors look for specifically.

2. The missing tab

The obvious one. A tab is gone and the underlayment, or the deck, is exposed. Beyond the immediate water risk, a missing tab tells you the wind was strong enough to defeat the seal in that area, which raises the question of what happened to the tabs on either side of it.

3. The broken sealant strip

The important one, covered in its own section below, because it is the damage that decides claims and the damage that inspections most often miss.

The broken seal: the damage nobody sees

Asphalt shingles are not held down by nails alone. Each course bonds to the one below via an adhesive strip that softens in the sun and seals the tab down. That bond is most of what keeps a roof together in wind.

When wind breaks that bond, three things can happen. The tab tears off, which you can see. The tab folds back and creases, which you can see if you look. Or the tab lifts, breaks its seal, and drops back into place looking perfectly normal.

The third case is the problem, because:

• It is invisible from the ground.
• It is invisible in a drone photograph.
• It will not necessarily leak this year.
• The shingle is now unsealed, so the next moderate wind lifts it again, more easily.
• By the time it does fail visibly, the storm that caused it is long past and the damage reads as age.

Checking for it means being on the roof and lifting tabs by hand across each slope. It is the single strongest argument for a hands-on inspection over an aerial one — see what drone inspections miss.

Why wind claims differ from hail claims

Both are covered perils on a typical policy, but they behave differently in practice.

Wind damage is more often visible, which makes the existence of damage easier to establish and the extent harder. Three missing tabs on one slope is plainly damage; whether the wind also broke seals across two other slopes is the part that has to be demonstrated.

Wind damage is directional, so a scope covering only the affected elevations is a common outcome. Where seals were broken beyond those elevations, that has to be documented rather than asserted.

The deductible often decides it. TDI notes that your wind and hail deductible may differ from the deductible applying to the rest of your policy, and it is frequently a percentage of dwelling coverage. A few missing tabs can easily cost less than the deductible, which makes filing pointless — unless the true scope is larger than what is visible.

Matching gets raised more often. When only some slopes are being replaced, whether the replacement shingles will match the remainder is a real issue, and one to put in writing early rather than discover at delivery.

What gets mistaken for wind damage

• Installation error. Shingles nailed too high, over-driven or under-driven nails, or too few fasteners produce failures that look like wind damage but are a workmanship issue — and are handled very differently by an insurer.
• Shingles that never sealed. Roofs installed in cold weather sometimes never bond properly. The tabs lift in ordinary wind because they were never sealed, not because a storm broke them.
• Age-related curling. Edges lifting from ultraviolet aging, uniformly across the sun-exposed slopes, rather than directionally.
• Ventilation-driven deterioration. A poorly ventilated roof cooks from underneath, which degrades the sealant and leaves shingles vulnerable to wind that should not have moved them.
• Debris impact. Real damage, often covered, but it is impact damage rather than wind uplift and it is documented differently.

What to do next

1. Photograph everything from the ground, including any shingle pieces in the yard, before you tidy up.
2. Note the date of the storm and the direction the wind came from.
3. Take temporary steps to prevent further damage if a slope is exposed, and keep the receipts. Do not make permanent repairs before your insurer inspects — TDI is explicit.
4. Get the roof inspected properly, including a hands-on seal check on every slope.
5. Check your wind and hail deductible specifically, not the general policy deductible.
6. If you file, read the claim process first, and be present when the adjuster comes out.

Frequently asked questions