The short version
- Edges, corners and ridges fail first
- Creased shingles are damaged shingles
- Flashing and ridge caps loosen
- Debris can add impact damage
How wind attacks
Wind passing over a roof creates suction, strongest at the eaves, rakes, corners and ridges. Shingles with aged sealant lift, crease and tear away.
Once a few go, the next ones are exposed.
What it looks like
Missing shingles, horizontal creases, lifted tabs, exposed nails, torn patches and displaced ridge caps are typical. Shingles in the yard are a clue.
The damage often starts at the edges.
Hidden damage
Lifted shingles may settle and look normal. Underlayment can be torn and decking cracked. Water can enter through these hidden openings in later rain.
Close inspection finds what the ground view cannot.
After the wind
Photograph what you see, protect the interior if water is entering and arrange an inspection. Exposed decking should be covered.
Do not climb onto a damaged roof.
General information, not engineering, legal, insurance or safety advice. Roofs, policies and local requirements vary, and every situation should be judged on its own facts. If anyone is in danger, call emergency services first.
