Typically begins at the areas of the roof affected by the greatest uplift forces due to aerodynamic effects: ridges, windward roof corners, windwards eaves, windward rakes, and leeward sides of ridges. Because greater wind speeds, and hence greater wind – generated forces, are found higher above the ground, the exposure of the building plays a large role in the wind forces which affect a roof. Wind generated forces can lift shingles that were not bonded and even debond sealed shingles. Wind forces which are strong enough to debond a sealed shingle will cause the shingle to be bent upslope; this result in a crease along the upslope edge of the exposure or in the shingle being torn away completely. Still stronger winds can tear away areas of multiple shingles from slopes.
Things we look for:
Loose and missing shingles - This is the most telling sign that wind has damaged your roof and should be remedied immediately. If you have shingles that are damaged, then they run the risk of failing. If shingles are missing completely, then that exposes your roof and property to water damage that could end up costing you down the road.