Why is Hail So Damaging to Commercial Roofs?

If you own a commercial building in Texas, your roof will be subjected to all kinds of storms throughout the year. Therefore, you have to take proactive action to keep your roof and the entire building safe and watertight. This includes installing a type of roof that can stand up to strong hails.

But for you to prepare your commercial roof for strong hail and other harsh weather elements, you have to be aware of the kind of damages they cause to a roof. Continue reading to know why hails are so damaging to commercial roofs.

Why Commercial Roofs Are Susceptible to Hails

Flat Roof

Since most roofs on commercial buildings are flat, they are more susceptible to high winds than steep-slope roofs. This is because the wind pressure from uplift is determined by the speed of the wind and how low high above-ground your roof is. The resulting uplifting pressure is most challenging at the corners and along the border edges of your building. That’s why the first signs of wind damage are seen at the edges of the roof.

Unfortunately, when strong winds damage your flat commercial roof, it becomes susceptible to larger and more catastrophic damages. The first signs of wind damage on your commercial roof will be roof coverings that have been lifted and peeled from the edges. If your roof is made from a single-ply roofing system, you will start to notice loose and lined materials at the surface. Metal roofs that have been damaged by wind will be bent sharply in different sections.

Type of Materials Used

The extent of damage on your commercial roof by hails also depends on the type of roofing materials you have used. Different types of roofing materials are affected by hailstones differently. For instance, if you have covered your commercial building with a metal roof, the most common damage you will suffer during a hailstorm will be denting. While this type of damage will affect the appearance of your roof, it won’t affect its water tightness.

PVC and TPO materials, on the other hand, can only withstand hailstones that are up to 1¾ inches wide. But this level of resistance diminishes with age. So, older PVC and TPO roofs will be destroyed by hailstones less than 1¾ inches wide. Sometimes, hailstones with ½ inch in diameter destroy old plastic and TPO roofs. So, if your roof is made of these materials, it’s important to have it inspected by a professional immediately after a hailstorm.