Soprema, Inc recently visited our office to present green roof systems to SBLM. Green roofs are an excellent way to contribute to environmental sustainability while, in some cases, taking advantage of typically unused space as an amenity. There are two types of green roofs, extensive and intensive, each with their own design considerations and benefits. Extensive green roofs are of shallow depths and typically consist of hardy planting medium, such as sedum, which require little maintenance and lower excess structural load capacity. Due to its shallow nature, extensive systems are not typically used as an amenity. Conversely, intensive green roofs include much deeper soils which can support grasses, shrubs, trees and, and subsequently, people. Intensive systems have a higher demand for maintenance and structural load capacity. Regardless of the type of green roof, the environmental benefits are evident in the ar...