Roof Damage Wind Speed

In between breezes and twisters is a whole range of wind speeds that incrementally damage the roof system.

Roof damage wind speed.

Class f for shingles that passed testing at 110 mph. Roofing material condition roofing materials in poor condition will naturally be more susceptible to wind damage. There are several types of damage high winds can cause to your roof including leaks missing shingles and gutter problems. Astm d7158 or the standard test method for wind resistance of sealed asphalt shingles uplift force uplift resistance method.

These differences can also account for the amount of damage sustained. Damage to your roof can begin at around 50 mph so you should know how to check your roof for such damage. Roof shape and slope wind speed and load will react differently on different roof shapes and slopes. Shingles roofs especially take a beating during high winds despite most being rated to withstand 90 mph winds.

Class d for shingles that passed testing at 90 mph. Areas like the corners and perimeter of the roof can be susceptible to higher wind pressures while the center of the roof might have lower stresses. Certain regions will be subject to higher pressures such as along the perimeter. As wind moves over a roof its effect is not uniform.

The effect of wind moving over a roof is not uniform. These non severe winds may cause some tree branches to break off and can cause damage to already loose or susceptible shingles. According to the national weather service slight damage can begin when winds reach 45 mph but this range is considered non severe. 58 74 mph.