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.
There are three prominent membrane attachment methods used in the U.S. low-slope commercial roofing market. They are fully adhered, mechanically attached and self-adhered. There are advantages and disadvantages to each of these attachment methods which should be considered prior to selection for a specific project.
As we enter the second decade of the 21st century the low-slope roofing market is still undergoing changes. The recent changes are minor modifications compared to the vast changes that occurred near the end of the last decade.
Rooftop gardens or living roofs offer several environmental advantages. Their increased use in urban areas has been due their ability to decrease water runoff from the roof area. The primary intent of the living roof application is to filter the stormwater and minimize the stormwater runoff from reaching the underground infrastructure.
In 2004, Ford Motor Company integrated cutting-edge environmental design into its manufacturing facility with the construction of the Ford Dearborn Truck Assembly Building. The 1.15 million-square-foot facility was constructed at the Ford Motor Company Rouge River Industrial Complex in Dearborn, Mich. An environmentally friendly design was an integral part of the project from the outset.
Ben Franklin conducted the first reflectivity
test in the 1760s. He took different colored swatches of fabric - from dark
colored to light colored - and placed them in the Philadelphia snow. As the sun
beat down, Franklin
noted that the snow melted around the dark colored fabric prior to the snow
melting around lighter colors.
Thermoplastic olefins (TPOs) are a blend of
thermoplastics and elastomers. The chemical formulation consists of a
thermoplastic base - polypropylene (PP) or polyethylene (PE) - and an
elastomeric base - the ethylene-propylene rubber polymer of ethylene propylene
diene terpolymer rubber (EPDM).
Slate tiles are one of the oldest types of
steep-slope roof coverings in the United States. Their application
dates back to colonial times. In recent decades, there has been a decrease in
slate applications, due in large part to shortages in raw materials and a lack
of skilled craftsman.