John A. D’Annunzio is President of Paragon Roofing Technology Inc., a construction engineering firm he founded in 1989. He is the editorial director of Building Enclosure and a technical columnist for Roofing Contractor. He has published more than 100 articles and has written four books on building exterior issues. For more information, visit www.paragonroofingtech.com.
He can be reached at 248-936-8744.
The Energy Crisis (as it was labeled) in the United States in the late 1970s initiated the widespread installation of above-deck thermal insulation boards on low-slope roof systems.
As is the case with other roof systems, flashings and penetrations are the most common points of moisture intrusion on standing seam metal roof systems.
