Metal Roof Hail Rating

What are hail ratings impact resistance ratings.

Metal roof hail rating.

The most effective way to minimize hail damage is to choose durable hail resistant roofing materials. It s important to remember that no roof is 100 immune to the damaging effects of an intense storm or some other catastrophic event. Underwriters laboratories inc ul an independent for profit company has developed a series of laboratory test to measure how well roofing materials resist hail. Metal roofs are very tough and highly resistant to hail damage.

These tests are widely accepted by the roofing industry and the results are widely quoted in industry promotional materials. Hail resistant is not hail proof. Hail damage to a roof is usually not the hail itself but the water that can seep through a roof damaged by hail. A 29 gauge metal panel can have the same impact resistance rating from underwriters laboratory ul as a 26 gauge panel.

Hail will not penetrate a metal roof. Here are the top hail resistant roofing options available for modern homes. Metal roofing has always been known as one of the toughest materials available to use for a roof and most metal roofing panels carry class 3 or 4 ratings. Summarizing the result we would be looking at for a class 3 roof is earned if the sample does not crack when hit twice in the same spot by a 1 75 inch diameter steel ball.

Just choosing any metal roof will leave many owners with regrets after the next big hail storm. When it comes to protecting a roof the thickness of the metal is a key factor to resisting large sized hail stones. Metal roofs can be made from a variety of metals and alloys including galvanized steel hot dip zinc galvanized g 90 and g 60 steel a less expensive thinner gauge steel often used in low end lower cost corrugated and ribbed metal panels galvalume steel zinc and aluminum coated steel a more expensive and longer lasting coating compared to g 90 galvanized steel stone coated. Metal roofs can handle hail extremely well even better than most other roof types.

A thicker metal panel will resist punctures and form stronger seams between panels. This has to do with the testing itself. The advantage of thicker metal panels in this case is that they are less prone to denting. Bridger steel recommends a minimum of a 26 gauge steel roofing panel to survive a harsh hail storm.

Even in extreme weather situations damage to a metal roof will take the form of small dents but not puncture break or tear the roof. After performing the test roofing manufacturers would be scored based on the resistance of the material getting a rating from 1 least hail resistant to 4 most hail resistant.