There are some general rules of thumb, however, storms come in all shapes and sizes and it can be hard to know for sure without inspection. Typically the stronger the storm and larger the hail (greater than ½ inch in diameter or larger than a nickel), the more significant the damage caused. Occasionally smaller hail (½ inch or less in diameter or the approximate size of a pea or marble) can cause damage depending on the condition of the property, outside temperature, and wind speed.
It can be difficult to see hail damage from the ground but there are some telltale signs. FGS does not recommend homeowners climb onto roofs to investigate.
After a significant hail storm, you may see dark, sandy granules in gutters and on the ground around your home. Depending on the age and condition of your roof, it may indicate damage to the durability of the shingles or exposure of the substrate. If you notice dark chunks of asphalt have fallen from your roof, it’s likely you have significant damage and may need your roof repaired.
Do not wait to contact your insurance carrier or licensed restoration contractor if you have damage. If your property requires repairs after a storm, it’s likely many others in your vicinity will need help too. Insurance adjusters and reputable contractors will be very busy with claims and repair calls and it’s best to get on their lists as soon as possible.