John D'Annunzio

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 Architectural Roofing & Waterproofing 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.

Roof Coatings Special Section

Reflecting on Today's Roof Coatings

Changes in Coatings can be linked to environmental concerns and technical advancements.

John D'Annunzio

September 9, 2019

No Comments

The material formulations and uses of roof coatings have evolved gradually over the past two decades and significantly changed how they’re used on commercial roofs.

Roof Maintenance Begins with the Inspection

John D'Annunzio

June 4, 2014

No Comments

Properly conducted roof inspections are the key to a successful maintenance program.

Living Roofs Simplified

John D'Annunzio

April 7, 2014

No Comments

The living roof on the Ford Dearborn Truck Assembly Plant helped spur interest in vegetative systems across the country.

Keys to Performing Annual Maintenance Inspections

Technical Details

John D'Annunzio

June 4, 2013

No Comments

Roof maintenance inspections need to obtain the most accurate information possible for proper roof management.

Metal Roof Application Methods

John D'Annunzio

October 3, 2012

No Comments

Metal roof systems have become a common choice for steep-slope roof applications.

Technical Details: Drainage Requirements

John D'Annunzio

March 8, 2012

No Comments

The detriments of standing water on the roof surface are well documented and quite extensive.

Technical Details: BUR Systems - Back in Black

John D'Annunzio

December 1, 2011

No Comments

Chances are that if you know who George Harrison was and what his contribution to culture was you are aware of built-up roof systems.

Technical Details: Flashings and Penetrations for Metal Roofs

John D'Annunzio

September 13, 2011

No Comments

Flashings and penetrations account for nearly 80 percent of all reported roof leaks. Therefore these areas are perhaps the most critical components of any roof system, but they are particularly important when it comes to low-slope standing seam metal roof systems.

John D'Annunzio

July 28, 2011

No Comments

System attachment is the most critical element of roof design and application. Improper attachment results in the increased probability of wind blow-offs and contributes to membrane strain created by differential movement of the system components.

John D'Annunzio

June 6, 2011

No Comments

The initial cost of a roof system is typically 10 percent of the total building cost. However, over the life span the building the roof could account for nearly 60 percent of the building’s total maintenance costs.