During the past 15 years, reflective, or “cool,” roofs have been promoted as an effective way for building owners to save energy and lower utility costs while reducing a building’s carbon footprint. The belief white roofs always are the most… Read More
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Cool Roofing & Energy Efficiency
Condensation Risk of Mechanically Attached Roof Systems in Cold-Climate Zones
“Flat roofs generally have a high potential of nightly overcooling and, therefore, an increased risk of condensation within the construction, particularly in cold-climate zones, depending on their specific assembly. A white exterior surface or so-called “cool roof,” applied to decrease… Read More
Room Membrane Color and Moisture Accumulation
“When designing a roof system membrane color, in addition to other variables such as building conditions, insulation levels and local weather conditions must be considered in order to prevent moisture condensation and subsequent accumulation within the assembly.”
Researchers emphasize evaluation of tradeoffs in battling urban heat island
A team of researchers from Arizona State University have found that warming resulting from megapolitan expansion is seasonally dependent, with greatest warming occurring during summer and least during winter. Among the most practical ways to combat urbanization-induced warming – the… Read More
Seasonal hydroclimatic impacts of Sun Corridor expansion
Although an overall world population increase of 2.3 billion is projected by 2050 relative to 2011, urban growth is estimated at 2.6 billion, as urban complexes, in addition to absorbing all of the world’s additional inhabitants, are expected to draw… Read More
Paint ‘em White???
“More roof insulation generally is a good thing but there is a point of diminishing returns. Rooftop Solar systems generally are good things provided they meet mind and fire requirements and are installed to protect the roof systems integrity. And… Read More
Effects of White Roofs on Urban Temperature In a Global Climate Model
These results suggest that increasing the albedo of roofs is an effective way of reducing the urban heat island. The degree to which the heat island decreases depends on the importance of roofs relative to the rest of the urban… Read More
Cool Roofs Cause Condensation Fact or Fiction
Phil Degger is a professional engineer, registered roof consultant, author, and Fellow of the Roof Consultants Institute. He has investigated problems and provided testimony regarding virtually all types of roof and waterproofing systems since the early 1980’s.
White EPDM Rising Star Among Sustainable Options
With each passing year the green building movement continues to escalate within the commercial construction market, putting energy-efficient roof technologies at the forefront.
COOL ROOFS AND CONDENSATION
“It’s not so unusual. Right after the first couple sunny spring days you get a call. The owner complains his roof is leaking but it hasn’t rained for a week. You investigate. It is not a roof leak. It is… Read More