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IMPACT TESTING OF IMPACT RESISTANT ASPHALT SHINGLES

In May 2019, Haag Research & Testing Co. (HRT) published the blog for the Haag Global newsletter which discussed the history of simulated hail testing performed by Haag over the years. We also explained our current ice ball launching platform (the IBL-7) and mentioned two impact testing protocols used to classify the impact-resistance of roofing products. (The blog can be viewed here.)

Since then, HRT conducted a research project to put several impact-resistant roofing products to the test. Five asphalt shingle designs from four different manufacturers were tested against their published impact ratings to determine if they would perform as advertised. Although two of the five shingles performed consistent with their ratings, the study revealed an important shortcoming in the impact testing standards. Test standards UL 2218 (steel ball drop test) and ANSI/FM 4473 (propelled ice ball test) specify visual examination of the tested roofing products after testing to determine if the products were compromised by the impacts. These test standards do not currently evaluate the reinforcements within asphalt shingles or other bituminous roofing types. Consequently, reinforcements can be fractured or strained during impact testing, yet go unnoticed by laboratory personnel performing the tests.

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Haag's Response to Coronavirus (COVID-19)

As phased reopenings continue, Haag Global is open for business and ready to serve our clients' needs. Our engineers & consultants are working in the field, taking extra precautions and practicing social distancing. Haag's testing lab is open. All Haag employees are doing their part to help stem the spread of the virus. The health and safety of our clients and our employees is our #1 priority. See our statement about COVID-19 here.

If you're limited on field work, we invite you to look at the expanded library of online classes and new LIVE webinars from Haag Education. Now would be a great time to get your CE credits for the year. Haag Certified Inspector training can be earned online, and we have many other online training opportunities. If you're registered for a classroom course and wondering if it will proceed, please click here for the latest information on transferring your registration. (Haag Education will be updating this policy as the situation changes.) Stay safe and be well.

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June Blog-- White Paper: IMPACT TESTING OF IMPACT RESISTANT ASPHALT SHINGLES

06/22/2020

IMPACT TESTING OF IMPACT RESISTANT ASPHALT SHINGLES