By: Samantha Yurek
A lot of thought goes into the design process when starting a green roof project. One of the biggest questions involves the type of green roof you want; extensive or intensive? This decision will dictate everything that will need to happen for your green roof to become a success. Let us take a quick look at the differences between intensive and extensive green roofs.
Extensive Green Roof: Swarthmore College of PA, Photo Credit: Green Roof Technology
Extensive green roofs are considered the simpler version because the roof structure is usually equipped to withstand the little bit of extra weight. With only a maximum of 6" of growing media and mostly ground cover covering plants, and extensive roof is certainly of a lower profile. The plants consist mainly of sedums and other succulents, herbs, grasses, mosses and low-growing perennials. An extensive roof is mainly for environmental benefits and and occasionally accessible to the public. Extensive green roofs can be excellent combined with Solar panels what increases the environmental benefits and increases return of investment substantially.
Intensive Green Roof: The Ledge Restaurant in Boston, Photo Credit: High View Creations