{"id":2862,"date":"2015-07-20T09:00:42","date_gmt":"2015-07-20T13:00:42","guid":{"rendered":"https:\/\/roofingmagazine.com\/?p=2862"},"modified":"2015-07-10T11:18:04","modified_gmt":"2015-07-10T15:18:04","slug":"top-performing-shingle","status":"publish","type":"post","link":"https:\/\/roofingmagazine.com\/top-performing-shingle\/","title":{"rendered":"The Qualities of a Top-performing Shingle"},"content":{"rendered":"
Shingle product development has generally been slow compared to technology evolution in other industries. The most important performance requirements of asphalt shingles, like shedding water, fire and wind resistance, durability and code compliance, have been established for decades. Within the past 35 years, though, there has been a push to develop additional performance standards for asphalt shingles.<\/p>\n
The current (and long-standing) product standard for fiberglass asphalt shingles is ASTM D3462. This standard focuses on the physical performance measures of shingles at the time of manufacturing. A number of areas tested include the \u201crecipe\u201d of the shingle (glass mat, adhesive, finished weight, etc.) and performance requirements, such as tear strength, behavior on heating, fastener pull-through resistance (the force needed to pull a nail through the shingle at high and low temperatures), and penetration and softening point of the asphalt.<\/p>\n
However, some manufacturers have fought to raise the performance requirements that shingles must meet. Rather than focusing on performance at the time of manufacture, these manufacturers want to establish a standard that would reflect how shingles perform over time. In 2011, the ICC Evaluation Service<\/a>, Brea, Calif., approved a new alternative acceptance criterion for asphalt shingles, AC438. Instead of dictating how to make an asphalt shingle (what raw materials to use), it requires additional physical property and performance testing beyond ASTM D3462. <\/p>\n