What wind actually does to a roof
Wind does not usually tear a roof off. It works on the edges. Air moving over a roof creates uplift strongest at the eaves, the rakes, the ridge and the corners, and it gets under the first course it can lift. Once a tab is broken free, the one above it is exposed, and the failure propagates in a line up the slope.
- Sealant strips broken, leaving tabs unbonded but still in place — the damage you cannot see from the ground
- Tabs creased or folded back and then laid flat again by later wind
- Shingles missing in a line or a patch, usually starting at an edge or a corner
- Drip edge and rake metal lifted or peeled
- Ridge cap displaced
- Flashing lifted at walls and chimneys
- Fasteners pulled through, leaving holes in the deck
