Windstorms are some of the worst forms of disasters that can strike your roof. Below are some of the specific damages strong winds can cause to your roof.
Extreme winds can blow off the whole roof or sections of it. According to networx.com, the damage occurs because the high-velocity winds reduce the air pressure over the house. The air pressure inside the house, which the winds don't affect, then raises the roof upwards. The shape, age, and construction materials determine the risk of a blow-off.
Shingle Loss or Damage
Strong winds can also damage or blow off individual shingles. The damage can occur if:
- The winds bring debris to the roof
- The storm breaks tree branches or uproots trees that end up on the roof
- The wind gets under and dislodges the shingles
Again, the shingles' age will determine the extent of the damage.
Flashing Loss or Damage
Roofing contractors use flashing metal to seal roof joints. For example, flashing metal usually protects the edges of a chimney from water intrusion. Strong winds and windblown debris can dent or lift flashing material. Aging or corroded flashing materials are particularly vulnerable to such damage. The damage makes roof joints vulnerable to water leaks.
Gutter Loosening or Damage
Gutters are also susceptible to wind damage. Again, the threat comes from both the wind and windblown debris. The two threats can knock sections of the gutters off their fasteners, disconnect gutter joints, cause cracks, and dent or bend the gutter materials. The damage depends on the gutter materials — for example, old PVC gutters are susceptible to cracking.
Roof punctures are also possible. First, strong winds can tear off sections of the roof and tear the underlayment. Large debris, such as tree branches, can crash onto the roof and puncture it.
Windstorm accompanied by rainfall can drive water through the roof. This can cause water leaks even if your roof doesn't have cracks or holes. All it takes is for a few shingles to loosen for strong winds to drive water into the roof.
Lastly, a windstorm can also leave your roof covered with debris. The debris might not cause water damage, but it will create problems in the end. For example, the debris might encourage moss and algae growth, interfere with drainage, and keep the roof moist most of the time.
Some wind damages might not be obvious immediately after a storm. The best way to know the extent of the damage is to inspect the roof.