Dark Roof’s Summer Cooling Penalty is a Deciding Factor
Cool roofs reflect the sun’s energy and reduce air conditioning loads in the summer, so do dark roofs absorb energy in the winter and reduce heating costs? In northern regions where heating costs are significant, can dark roofs be energy efficient? Some building professionals specify dark absorptive membranes for northern cities like Chicago and Minneapolis believing that they are lowering their clients heating costs and lowering year round energy costs.
An analogy, only slightly tongue in cheek, would be to ask if Chicagoans walking along Michigan Avenue in the winter wear dark clothes to stay warmer? Or do dark colored cars outsell light colors in the Windy City?
So, do dark roofs help improve building energy efficiency in northern cities? Let’s take a look at the arguments.
The Roof Coatings Manufacturers Association (RCMA) is now accepting abstracts for its fourth biennial International Roof Coatings Conference (IRCC) program. The deadline for submission of abstracts is Oct. 31, 2017.
The 2018 IRCC will take place July 23-26, 2018, at the Fairmont Chicago Millennium Park, in Chicago. The conference will feature a host of networking opportunities, educational sessions, and other programming geared toward professionals involved in the roof coatings industry.
“Our last conference was a success, with an over 40 percent growth in attendance,” says Jared Rothstein,
PPG has published “The Gold Standard in Architectural Metal Coatings: Celebrating 50 Years of DURANAR Coatings,” a 16-page brochure commemorating the 1967 introduction of polyvinylidene fluoride (PVDF) coatings for metal building components.
According to Brian Knapp, PPG director, coil and building products, the booklet illustrates the historical significance of Duranar coatings.
“Our PVDF coating was a product that enabled architects to design metal components and facades with color,” he explains. “Until we introduced Duranar coatings, anodized aluminum was virtua