How large does hail have to be to cause storm damage to a roof? Well, it’s not quite as simple as size. Often it has to due with the frequency of the hail (how long it is falling for) and the velocity at which it hits your roof. Your pitch of the roof will have something to do with the damage as well. Flat roofs tend to fair worse than their chalet style counterparts.
Hail is defined as particles of ice that commonly fall along with rain. The particle size varies but to be considered hailstones it must be greater or equal to –0.2 inches. According to the National Weather Service, severe hail measures 1 inch or larger.
The 1 inch is the all-important number because it determines if the storm will make news for weather reports. However, hailstones measuring less than 1 inch can still destroy property. To some infrastructures hail larger than 1 inch may not cause tremendous damage. In some part of the US, weather reports will consider ½ inch as severe hail storm while others will not consider it to be severe, until the size is 1 inch or larger.
What size do hailstones have to be to cause property damage?
Hail storms can do damage to more than just vehicles and driveways. When a hailstorm hits, it can destroy roofs of many homes and other personal properties. Even though hailstorm can wreak havoc, the intensity of the damage can vary greatly.
Here are some factors that affect the extent of hailstone damage in some properties.
The intensity, direction, and wind speed can greatly vary during a hailstorm. Any changes in wind conditions can greatly affect the force of hailstones when it hits land. Even smaller size hail can do great damage in a high-intensity wind. Colorado is often hit with large hail storms. If you are in Denver and need hail damage roof repair, give us a shout.
2. Hailstone size and concentration
Hailstone size is one of the most important factors in assessing the damage to properties. The size of hailstones can be as small as a pea or as big as a softball. When they hit land, most of them have rough edges which add up to the damage it creates. Also, hailstorms lasting for several hours can produce devastating damage even in smaller size hailstones.
3. Building materials
Roofing materials absorb hailstones impacts in different ways. Also, the age and condition of the roofing materials play an important role on how much damage it can suffer. Hail can dent metal roofing, gutters, and other aluminum sidings. Meanwhile, shingle and other wood shakes can crack during hailstorms. But softball-sized hailstones are strong enough to penetrate and puncture a roof.
Can Pea-sized Hailstones damage roofs?
A pea-sized hailstone is described as a ¼ inch in diameter and yes, it can still cause damage to roofs. But there are several factors that play an important part whether these small size hailstones are enough to cause damage. These are as follows:
- The density and consistency of hailstones. Sludgy hail may not cause enormous damage, but more concentrated hailstorms are enough to create cracks in roofs.
- The angle and wind speed at which hail may hit land can add to the damage. In an angle and at great speed, it can break windows and ruin metal gutters. Wind speed increases the damage caused by hailstorms.
- The concentration of hail plays the biggest factor in producing roof damage. Even pea-sized hailstones can create damage to roof shingles if thrashed for hours during hailstorms.