September 2013

A study with impact

A study with impact 5 stars5 stars5 stars5 stars5 stars

Determining the hail resistance of fiberglass shingles

by Jim D. Koontz, P.E., RRC and Troy L. White, P.E.
Be the first to comment

Editor's note: The following was adapted from the paper "The Correlation Between Hail Resistances and the Physical Properties of Fiberglass Shingles," which was written by the authors and presented in February at the 2013 International Roofing Expo® in San Antonio.

Fiberglass-reinforced asphalt shingles are a primary roofing material used on steep-slope roof systems in the U.S. Fiberglass shingles are used in a variety of applications, including single-family homes, multitenant structures and commercial buildings. However, during hail events, fiberglass shingles can fail, resulting in significant expenses often borne by the insurance industry, building owners and homeowners. This recurring loss exposure has resulted in discussions within the insurance industry as to how claims involving hail damage to fiberglass shingles could be reduced.

Jim D. Koontz & Associates Inc., Hobbs, N.M., recently conducted a study in 2012 to determine the role physical properties of fiberglass shingles play in hail resistance. Following is an overview of the study results.

Web exclusive: Click below for more information.
Hailstone size compared to objects

To read the article in its entirety, please log in or register (registration is free).

Log in or register for FREE access to this article and other Professional Roofing online content.

Not a user?

Register now for free access
  • Full access to every article
  • Online Web exclusive information
  • Photo gallery
  • Breaking news
  • Online classified ads

Already a user?

Log in now

User name:



Login help
Click here to have your user name and password emailed to you.

Comments (0) Login to post a comment or rating
There are no comments posted.