Wind damage is a perimeter problem priced as if it were a field problem. The edge lets go first, the membrane peels inward, and an owner sees a torn corner and a bucket in a hallway. The repair that matters is the one that changes how the edge is held. The city designs for 115 mph, so a roof that peeled well below that number was probably held down more weakly than the design assumes.
We repair what the wind took and price the attachment upgrade as its own line. The owner decides whether the roof goes back the way it was or goes back stronger.
The Call: Peel, Billow or Impact
Wind damages roofs three ways, and each has a different repair. A peel starts at an edge or corner and pulls the membrane up in a strip. A billow lifts the membrane off its substrate in the field, usually where fasteners or adhesive failed, and it flaps with each gust until a seam tears. An impact is something the wind threw: a branch, a sign, a piece of someone else's roof. We sort the damage into those groups on the first walk, because the fix and the cost differ.
A peel is repaired from the edge inward, with new edge metal and a stronger attachment. A billow is repaired by re-securing or replacing the affected area and finding out why it let go. An impact is a puncture repair with a check for wet insulation under it. Mixed damage is common. A single storm can produce all three on one roof.
What It Costs: The Edge Is the Line Item
The expensive part of wind repair is rarely the torn membrane. It is the edge. Replacing a few feet of membrane is a small line. Replacing the edge metal, the cleat and the backing along the failed run, and re-attaching at a closer fastener spacing, is the line that stops the next peel. Corners cost more per foot than the run because they take higher uplift and need more fasteners and more careful flashing.
We price the repair in four lines: temporary protection, membrane and flashing repair, edge and attachment upgrade, and any wet insulation found. A GC carrying a claim can see which lines are storm repair and which are upgrades. Wet insulation is a unit-price allowance, since the quantity is not known until cores are cut. Rooftop equipment that shifted or fell gets its own line, with the curb and the connections checked. If a roof is near the end of life, the scope may recommend a replacement instead of a large patch.
What the Code Sheet Says: 115 mph and a Prairie With No Windbreak
The 115 mph figure on the city sheet is the number every perimeter detail is checked against. The Rathdrum Prairie sits at about 2,274 feet and holds Coeur d'Alene, Post Falls, Hayden and Rathdrum, and on any exposed flat roof the corners and edges take the highest uplift.
On November 17, 2015 a historic windstorm left about 238,000 customers across Spokane and North Idaho without power, with trees down across the area. Wind plus falling trees is exactly the mix of peel and impact this repair is sorted by. For roofs repaired after such an event, we look at the fastener pattern in the zone around the damage, not just the damaged area itself, because the same weakness usually runs along the rest of the perimeter.
Where It Fails First: Corners, Copings and Rooftop Units
The first places to go are corners, parapet copings, edge metal at eaves and rake, and the membrane within a few feet of each. After those, loose rooftop units, vents, fans and skylight covers catch wind and shift. Gutters and downspouts pull away, and rooftop signs and screens, which act like sails, can bend their supports.
We check edge metal, coping and gutters first, then the field for billows, then rooftop equipment and the skylights and penetrations. A tilt-up at Riverbend Commerce Park, with a long flat roof and a parapet around it, shows wind damage at the parapet cap and the corner flashings. A gabled office in Hayden shows it at the ridge and the rakes. The pattern follows the shape of the building, which is why the first walk includes a lap of the whole perimeter before anyone looks at the field.
Rooftop screens and signs deserve their own look. A screen wall around a unit acts like a sail, and a bent post or a loosened base can tear the roof under it. We check each support, the flashing at its base and the membrane around it, and if the damage reaches the screen, we price a repair or removal. Gutters that were pulled partway off need new hangers set into solid backing, and downspouts that dropped need straps that hold.
Alternates: Upgrade the Attachment, Add the Fastening Zone
Bid alternates give the owner a real choice. A closer fastener pattern in the perimeter zone. A heavier-gauge edge metal. A continuous cleat in place of clips. A full-adhered membrane in place of mechanically attached on a damaged section. An air barrier or insulation attachment upgrade where the deck allows it. Each is a line with a price and the reason noted.
The cost of the upgrade is small next to a repeat claim. A roof that was repaired to the same weak attachment and failed again at the next wind event has cost the owner two repairs and a downtime. We do not sell the upgrade as a rule. We show what it costs and what it changes, and the owner decides. Where a claim is open, our claim documentation separates the storm repair from the upgrade, since the policy may treat them differently.
Schedule and Snow Window: Wind Season Meets Cold Season
Wind events come in fall, winter and spring, and the repair window depends on temperature. Adhesives and welded seams need dry, moderate weather. A damaged roof in November gets a temporary seal that holds through the cold, and permanent repair waits for a warm, dry stretch. We document the temporary work, check it after each major snow or wind event and report on its condition.
A fall repair has an advantage, since the roof is dry and the schedule is open. A spring repair sits in the same window as thaw damage and a rush of other claims. Owners who expect to face a repair should walk the roof in September and order edge metal early. Lead time on fabricated pieces is the part of the schedule owners forget. A follow-up maintenance visit is booked with the repair, so the next gust meets a tighter roof.
Commercial Roofing Questions
What does wind damage look like from the ground?
Lifted or missing edge metal, flapping membrane at a corner, debris on the lot, and displaced rooftop units. Interior stains appear later.
Can a peeled corner be patched?
A patch covers the tear. The edge needs a stronger attachment, or the next gust repeats the peel.
Should I worry about wet insulation after wind damage?
Yes. Water gets in through the torn area and stays in the board. We check with meters, scans and cores.
How fast can you get a crew out after a storm?
A crew goes out to dry in as soon as the roof is safe to walk, and the permanent repair follows once the scope is priced.
Does a wind repair need a permit?
It can, depending on scope. The City of Coeur d'Alene Building Services sets the criteria. We confirm before work starts.