Roof Damage Wind Speed

These differences can also account for the amount of damage sustained.

Roof damage wind speed.

Factors that can accelerate wind damage. Certain regions will be subject to higher pressures such as along the perimeter. 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. Roofing material condition roofing materials in poor condition will naturally be more susceptible to wind damage.

58 74 mph. Astm d7158 or the standard test method for wind resistance of sealed asphalt shingles uplift force uplift resistance method. Class f for shingles that passed testing at 110 mph. As wind moves over a roof its effect is not uniform.

Damage to your roof can begin at around 50 mph so you should know how to check your roof for such damage. The effect of wind moving over a roof is not uniform. According to the national weather service slight damage can begin when winds reach 45 mph but this range is considered non severe. Class d for shingles that passed testing at 90 mph.

In between breezes and twisters is a whole range of wind speeds that incrementally damage the roof system. According to the national roofing contractors association nrca most wind damage to a roof starts on the edge. Roof shape and slope wind speed and load will react differently on different roof shapes and slopes. 45 57 mph.