Interest in green roofs (pun warning) continues to grow, especially in urban centers. Their benefits, both environmental and aesthetic, include savings on energy use, thus reducing the impact on global warming (especially in urban areas), helping to control rain water runoff thus reducing loads on storm sewage systems, and providing locally-grown produce to urban markets. “Green roof” is a general term that includes “white roofs,” those that reflect sunlight thus saving cooling costs; “blue roofs,” those that retain water and control runoff; “solar roofs” that heat water or generate electricity, and “living roofs,” those covered with soil and planted, a practice that both insulates and impedes runoff.
Living roofs — especially those planted with edibles — may be the next big thing but the practice is actually quite old. We recall a diorama at the Nebraska Historical Society that showed a “soddy,” a home entirely built of sod. As we remember it, there was even a cow grazing on top of the house. (more…)