The GreenGrid® green roof system is an innovative, modular approach to green roof technology. Green roofs have a number of benefits that have been proven for years in Europe and more recently in North America. For example, the National Research Council Canada found that in buildings less than three stories in height, a green roof can reduce average daily energy demands for cooling by 50% or more compared to a typical flat roof. As a result, reductions in the size of mechanical equipment, such as, air conditioning equipment are possible. Additionally, stormwater runoff can be reduced by up to 95% following a 1-inch rain event, lowering the impact of a building on the municipal storm drainage system and the surrounding watershed. The GreenGrid® system’s modular design allows for a lighter green roof, faster installation (increasing cost effectiveness), and easier post-installation repairs (or changes) to roofs compared to traditional built-in-place green roof systems. The modules are made from a minimum of 60% post-industrial recycled plastic (HDPE), some edge treatment options are made from recycled metals or plastic and sawdust, and pavers are made from 100% post-industrial recycled rubber.