Metal Roof and Lightning

December 15, 2014



“Is lightning attracted to my metal roof?”

One of the questions we are often asked is whether or not metal roofs are more likely to get struck by lightning.

Schroer & Sons installs aluminum and steel metal roofs.  Aluminum and steel, like most metals, are conductive of electricity. So it would seem your metal would attract lighting. However, the truth is, a metal roof is no more or less likely to get struck by lightning.

Lightning strikes the highest point in a thunderstorm. Actually, building strikes are quite rare. Usually lightning strikes a nearby tree or telephone pole. If your home is the highest structure in the area, your risk for a lightning strike is higher.

“Should I install lightning rods on my metal roof?”

In most situations, it is not necessary to install lightning rods on your metal roof.  Remember, lightning strikes the highest point. Placing a metal rod on your metal roof will only make it more likely to get struck. Unless your home is the highest point on your area, is not not recommended you install a lightning safety system on your home.

If you find it necessary to install a lightning safety system on your home, we recommend you hire a professional. There are many considerations when installing lightning rods on your home. In the event of a strike, a lightning safety system is designed to filter the flow of electrical current safely away from the home. So, ensuring it is installed correctly is key, especially when your roof is made of metal. Perhaps most important is having your lightning protection system grounded properly.

“What happens if lightning strikes my metal roof?”

Truth be told, a metal roof is the safest roof in the event of a lightning strike. There are a few reasons for this.  According to the Metal Roofing Alliance, “if your home were hit by lightning, your metal roof would disperse the energy safely through the structure. Since metal roofing isn’t combustible or flammable, it’s a low risk and desirable roofing option where severe weather is concerned — especially for lightning.” 

A metal roof does not attract lightning. If your home is struck by lightning, a metal roof will diffuse electricity away and cannot catch fire, keeping your home safer in a thunderstorm.  This is just one more reason why we at Schroer & Sons believe a lifetime metal roof is the best roof available today.

Call Schroer & Sons today to learn more about lifetime metal roofing systems.