Wind Breaks The Seal Long Before It Takes The Shingle

The Seal Strip Is The Whole Story

Every asphalt shingle has a bead of thermally activated adhesive across its face. Sun heat softens it, the shingle above settles into it, and the two bond into what is effectively one surface. That bond is the only reason a roof survives a Chicago wind at all. Nails hold the top edge. The seal strip holds the bottom edge down, and the bottom edge is what the wind grabs.

When a gust gets under a tab, one of three things happens. Best case the seal holds. Worst case the tab tears off and lands in the driveway, which at least tells you something happened. The middle case is the one that costs people money: the seal breaks, the shingle flexes up, the gust passes, and gravity drops the tab right back into place. From the driveway that roof is perfect. In reality that section has no wind resistance left, and the next thirty mile an hour day will lift it again until eventually it goes.

That is why we do not inspect wind damage from the ground and neither should anybody who quotes you. Broken seals are found by hand, by lifting tabs across the slope and feeling whether they release. It is tedious. It is also the entire job.

Creased Shingles Look Fine And Are Not

The other signature of wind is the crease. When a tab folds back on itself and drops down again, the fold leaves a line across the shingle where the mat has fractured and the granule surface has cracked. Sometimes you can see it as a faint horizontal line, most often on the courses nearest the ridge and along rake edges. From forty feet down on the lawn it is invisible.

A creased shingle is finished. The fracture runs the width of the tab, water finds it, and freeze-thaw opens it the same way it opens hail bruising. That shingle comes out. When we count creases in a slope we are counting how much of that slope has already failed, and that count usually decides whether you are looking at a repair or the whole elevation.

What We Check On A Wind Call

Wind damage is rarely limited to shingles, and this is where a lot of inspections stop too early:

• Ridge caps first. They are the most exposed part of the roof and the first thing a straight-line gust unzips. A missing ridge cap opens the ridge vent to driven rain.
• Rake and eave edges, where uplift pressure concentrates. Also the first place drip edge peels away from the deck.
• Every slope by hand for broken seals, and every course near the ridge for creasing.
• Fascia and soffit. Wind that gets into a soffit vent pressurizes the attic and lifts sheathing from underneath. Torn soffit panels mean we look inside the attic before quoting anything.
• Flashing at chimneys, walls and skylights, where wind pulls counter flashing loose and leaves a gap nobody sees until the next rain from the same direction.
• Decking and framing from inside the attic: cracked rafters, popped sheathing nails, daylight at the ridge, sheathing that has separated from a truss.

Gutters get checked too. A wind event that pulls a gutter run off its fascia usually took some fascia with it, and water running behind a gutter rots a fascia board faster than anything else on a house.

When Wind Damage Is Structural

Most wind calls end in shingles. Some do not. The photo at the top of this page is a gable end we reframed and wrapped after wind pushed it out of plumb, and that work has nothing to do with roofing material and everything to do with whether the house is sound.

Straight-line wind loads a Chicagoland house in ways it was never designed for, especially older frame homes in the south suburbs where a gable end is sheathed but not braced. Uplift on the roof plane transfers into the top plate, the top plate pulls on the rafters, and the whole assembly racks a little. You get popped drywall seams at the ceiling, doors that suddenly stick, and sheathing nails backing out. A contractor who lays new shingles over a racked frame has sold you an expensive delay.

We do the framing work ourselves: rafters, fascia, decking, gable reframing, sheathing replacement. If the wind did enough that the structure moved, that goes in the scope and in the claim, with photos from inside the attic to back it up.

When Wind Justifies Whole Slopes

A handful of missing tabs on one elevation is a repair, and we will do it as a repair. The math changes when broken seals are widespread. If we lift tabs at ten spots on a slope and eight of them release with no resistance, that slope is done regardless of how it looks in a photograph.

Carriers understand this and often approve slope by slope, which is fair since wind hits directionally. If three of four slopes are compromised, a full shingle roof replacement usually costs less than three separate slope replacements with mismatched shingles. We will walk you through the honest comparison and put whatever the roof needs in front of your adjuster with the evidence attached. That process is covered on our roof insurance claims page.

Get It Looked At While The Date Is Clear

Wind claims live and die on the date of loss. Illinois carriers track wind events by zip code and by hour, so an inspection days after a named storm is easy to document. An inspection eighteen months later, after four more windy seasons, becomes a debate about whether your roof simply wore out. If a real blow came through your neighborhood, get on a schedule.

Wind repairs and reframing jobs are in the gallery. We work wind calls out of Alsip into Chicago Ridge, Joliet and Harvey, and the contact page is the fastest way onto the list if nothing is actively leaking.