Commercial low-slope rooftops are an attractive platform for the installation of solar photovoltaic (PV) electricity-producing systems. Nevertheless, a roof’s function is, first and foremost, to protect the building’s contents and people from the elements.
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When properly applied, tests can yield valuable insight into the installed performance of systems, aid investigators in determining the cause of a failure, or help to determine if a product is performing to its intended level.
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Builders, architects, and specifiers have always demanded excellence in themselves, their materials, contractors, and subcontractors. Design professionals find success through various ways, from word of mouth to programs such as EnergyStar or Green Globes, or by seeking professionals certified in their given fields.
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Cool roof coatings have achieved more than 30 years of proven energy savings. However, the federal government and building code bodies have only recently embraced the use of these reflective coatings.
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Inadequate insulation and air leakage are leading causes of energy waste in most projects, and coatings selection can play a big role in reducing these inefficiencies. This article examines use of coatings in applications as diverse as cool roofs, air barriers, infrared (IR) reflective pigments, and radiant heat barriers.
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As the push toward renewable energy continues, roofing suppliers have been receiving an increased number of inquiries from photovoltaic (PV) providers regarding installation of these systems on warranted roof systems.
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For decades, the U.S. design and construction industry has turned to sprayed polyurethane foam to insulate and air seal buildings. When used as a roofing material, its monolithic nature allows for a seamless, self-flashing application that can keep out water.
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The goal of the 850 Third Avenue project was to install a green roof terrace above occupied commercial space to maximize property value while providing a pleasant enclave for Shorenstein Properties’ new commercial tenants.
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Landscaped green roof assemblies include both built-up systems and eco-roof tray systems. Either type may also include an insulating layer. Eco-roofs incorporate drainage, filtration, retention, and irrigation within one component.
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This article reviews the general advantages—and challenges—of green roofs, including how they fail. It reviews strategies for overcoming those challenges and provides advice for achieving long-term performance from a construction perspective, with an emphasis on waterproofing.
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