"Shake-Style" Asphalt Shingles Design Defect Prone to Hail Damage - March 2020
Dustin Smoot, RRC, RRO. Terracon
When you are passionate about roofing and sustainability, as I am, it is difficult to watch roofs being replaced so frequently due to alleged damage from hail impacts. The research for this article began in 2013 when I first saw shake-style asphalt composition shingle roofs with hail damage. At that project, there were 47 multi-unit structures on which a
single manufacturer’s shake-style asphalt shingles had been installed. A moderate hailstorm had moved through the area with one inch maximum diameter hail and impacted these two-year-old roofs. At the time the roofs were installed, the owner had been sold a high-quality, “lifetime” roof and couldn’t believe that the roof had been damaged by hail that
size. Read more.