Wind Damage Roof Repair
Wind does not take a roof off in one go. It finds an edge, works it loose, and lets the next gust reach underneath — so the bare decking that shows up after a storm generally started as a lifted corner months earlier. Most wind repair is about edges, fasteners and seals rather than the middle of the roof.
Air does not press evenly on a building
Pressure drops sharply at corners, along the perimeter and at the ridge, which is exactly where roofing lifts first. Once a tab is raised, wind gets under it and pries with far more force than it could apply to a flat surface, and the failure spreads from that point. Edge metal, starter courses, ridge caps and fastening patterns matter more than most owners realize, and they are the cheapest part of a roof to get right.
The rating on the wrapper is conditional
Under ASTM D7158, asphalt shingles are classed by the basic wind speed they withstood in testing: Class D at 90 mph, Class G at 120, Class H at 150. Every one of those numbers describes a sample fastened precisely as the manufacturer specifies, applied to a building of ordinary exposure and height. It is a lab result, not a promise about your roof.
Six nails, and where they go
Four nails per shingle covers a standard installation. The manufacturer's top wind warranty, commonly 130 mph, generally requires six, plus a properly bonded starter course at eaves and rakes. Placement matters as much as count: every nail belongs inside the narrow zone printed across the shingle, and one driven above that band holds a single layer instead of two. High nailing is behind a large share of repeat wind failures, and it is invisible once the next course is down.
What wind damage looks like
Missing shingles are the obvious sign and the least common. More often it is creased shingles — lifted, folded back and laid down again with a break across the tab that cracks through within a season or two. Broken sealant strips leave courses loose but flat, invisible from the ground and ready to fly next time. Ridge caps and hip shingles go first because they are most exposed. Drip edge and rake metal work loose. Flashing separates just enough to let wind-driven rain past. Nearly all of it takes being on the roof to see.
Destructive wind is not a coastal problem
Straight-line winds flowing out of thunderstorms reach speeds comparable to a tornado over a far wider path, and one long-lived storm complex can lay that across whole counties in an evening. Downslope wind events along the Front Range blow hard for hours under a clear sky. The National Weather Service's high wind safety guidance is worth reading precisely because it is written for places nowhere near a coastline.
Repairing it properly
A wind repair starts by finding the real boundary of the damage, since creased and unsealed shingles extend well past the bare spot. Damaged pieces come out, decking and underlayment get checked where they were exposed, and new material goes back with the correct nail placement and count. Shingles that lifted but did not tear may need hand-sealing, because a broken seal does not reliably reset on its own — and in cold weather the adhesive will not bond until sun has been on it. Edge metal and ridge details get refastened to specification rather than sealed over.
Unsealed shingles are a countdown
The roof is watertight until the day it is not, and the weather picks that day. A prompt inspection after a windy storm can turn the event into a hand-sealing job rather than a torn-off slope next month. If you have been picking shingles out of the yard, the ones still up there are the reason to look.
