Best and Worst Hail Impact Resistant Asphalt Shingles

best and worst hail impact resistant asphalt shinglesThe Insurance Institute for Business and Home Safety (IBHS) recently completed a thorough multi-year scientific study to determine the performance of impact-resistant shingles.

IBHS Hail Test 1

Shingles labeled as “impact resistant” were purchased and put through a series of in-lab tests that simulated the effects of hail impacts.

Through research and testing, IBHS was able to manufacture hailstones that replicated the properties of hail produced naturally.  Hailstones that would bounce, shatter, or turn to slush were used for the tests in order to simulate different densities and strengths found in natural hailstones.IBHS Hail Test 2

Three types of damage were documented: Dents/Ridges, Granule Loss, and Tears.  The results showed a wide range of effectiveness from shingles labeled as impact resistant.

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The manufacturers/brands used in testing were:

Atlas StormMaster Shake

CertainTeed Landmark IR

CertainTeed NorthGate

GAF Timberline ArmorShield II

IKO Cambridge IR

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Malarkey Legacy

Malarkey Vista

Owens Corning TruDefinition WeatherGuard HP

Here is a summary of the IBHS hail impact testing results:

Shingle hail impact rating

More about the results can be found here: https://ibhs.org/hail/shingle-performance-ratings/

IBHS Hail Test 3

The standards for testing can be found here: https://ibhs.org/hail/shingle-performance-ratings/