Pashek Associates has installed a green roof on the second floor roof of its office building on East Ohio Street on Pittsburgh's north side. Green roofs are an increasing trend. Recently, it has been gaining wider acceptance as agencies like "Green Roofs for Healthy Cities" spread the word about the benefits.

Green roofs absorb storm water, slowing the runoff into city sewers. They insulate buildings, moderating hot and cold temperatures, reducing energy use. They release oxygen into the atmosphere, countering excess carbon dioxide levels.