There’s nothing old about modern sod roofs

A little green on your roof can put big green back in your pocket. Green roofs are just that – green. Vegetated surface installed over man-made structures either at or above grade, green roofs tap into the natural cooling and insulating properties of plants.

Studies show real tangible benefits to going green. Researchers estimate green roofs could reduce cooling costs by 25%. One study in Chicago estimates that going green could save $100,000 a year if all roofs were converted to green roofs.

The science behind green roofs is quite simple. In the summer, traditional roofs become overheated, putting a strain on indoor cooling systems. A green roof not only acts as an insulating layer, but the natural plant processes of photosynthesis and evapotranspiration decrease the solar energy absorbed by the roof. 

Even in the winter, green roofs are able to reduce energy costs. Again, it’s due to the combination of the added insulation and natural plant processes. Studies show the winter root activities combined with the air layers created by the vegetation are capable of raising the surface membrane temperature by 4.5 degrees C.

Green roof advocates point to other key benefits. By creating these urban microclimates, green roofs are able to combat the urban heat island effect, decrease storm water runoff and reduce air and noise pollution. The Fairmont Waterfront Hotel in Vancouver, BC is even