Hail Damage To A Metal Roof

Wondering how hail can damage your metal roof? The truth is that hail can affect a metal roof in several ways. 


No roofing material lasts forever, and hail damage can lead to more problems that develop over time. Hailstones large enough to dent your metal roof can also lead to cracks in the finish or coating that can allow water to seep through. 


Water seepage can lead to rust eating away at your roof over time. If your roof is rusting out in places you can’t see, you’re at risk for the next storm breaking through the weakened structure. This damage can occur even if you don’t notice any leaks.

Storm Damage

Types of Hail Damage to a Metal Roof

When looking at how a metal roof can be damaged from hail, there are two main differences:


If hail has caused a dent to form on your metal roof, most often is a cosmetic issue that will not cause the roof to fail or need an extensive repair. Dents in your metal roof do not require any fixes to be done to the structural part of the roof and are the better scenario when compared to a punctured roof system.


A roof that was punctured by hail can cause a roof to leak or potentially fail. Hail is more likely to cause dents than to puncture your metal roof, this is mainly because most hailstorms are smaller. However, in areas that are more common to have heavier hailstorms, hail could puncture the metal roof and cause a much bigger issue.


Factors of Hail Damage to a Metal Roof

The extent of the damage that hail inflicts on a metal roof depends on several factors.

Size of the Hail

A lot of the damage is determined by the size of the hail that the roof has to protect itself from. If your project is in a location such as Texas that is susceptible to large size hailstones, and in most cases, this size of the hail is often to cause damage of some kind damage. It depends on the strength of the storm and the other factors below.

The thickness of the Metal

The thickness of the metal roof is also a factor that can affect the severity of the damage to a metal roof. The thicker the steel metal, the lower the gage is, so a 22-gauge roofing system will be less likely to receive damage than a 26- or 29-gauge metal roof. As for aluminum coil, it is purchased by the decimal of thickness, and the higher the decimal the thicker the substrate.

Roof Slope

When hail damage occurs, it is similar to the way a car receives hail damage, it follows the shape of the car. The slope of the metal roof or wall structure is the same as the car. As it applies to hail, a lower sloped roof has more of a chance to get damaged from the hailstones than a roof that has a steeper slope. A sharper angled roof is likely to deflect more of the hail and cause less damage.