Hail Ratings Roof

These products have class 1 through class 4 hail resistance ratings 4 being the highest. A class 4 test involves a steel ball weighing 1 2 pounds being dropped from a height of 12 to 20 feet on the same location of the assembly. Underwriters laboratories inc ul an independent for profit company has developed a series of laboratory test to measure how well roofing materials resist hail.

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The last factor in determining a good choice for a hail resistant roof is choosing the type of metal panel itself.

Hail ratings roof.

There are hail resistant roofs. The ratings are given by taking a steel ball and dropping it from a pre determined height and measuring the damage the roof has sustained. What are hail ratings impact resistance ratings. For the majority of homes a class 4 ul 2218 rating will be sufficient in protecting your home from roof penetration due to a hail storm.

Check our latest roofing ratings for detailed results for 16 different lines of. These tests are widely accepted by the roofing industry and the results are widely quoted in industry promotional materials. 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. 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.

The american society of testing and materials astm perform the tests. In most cases a corrugated panel is the best option for pure protection. Below cr members with digital access can read ratings and reviews of three top performing shingles from our tests. The corrugation helps deflect and hide any deformities that may occur from a hail storm.