Myth No. 3: Green roofs may look nice, ... A properly designed green roof will also have a root barrier to stop plants from trying to root too deep.

Though the specifics and design may vary, the basic green roof elements consist of a deck structure, waterproofing, a root barrier, a drainage layer, water retention, a growing medium (e.g. dirt ...

Now individual homeowners — those lucky enough to have a roof or terrace that can accommodate a patch of dirt — are beginning to follow suit. The Living Roof Takes Root spotlight ...

The architectural firm of Schmidt Associates keeps a garden on the second-story roof of its 320 E. Vermont St. offices. Not for looks, but for research. The two smallish swaths are microscopic ...

Green roofs may have environmental benefits, ... A waterproofing membrane can act as a root barrier and should comply with BS EN 13948, the standard for resistance to root penetration. A drainage ...

Green roofs, such as the one at the arboretum, are generally composed of a series of layered materials, including waterproof and root-barrier membranes, filter fabric, a lightweight, well-drained ...

Among his areas of expertise: green roofs, which, he quickly told us, is “vegetation on the roof ... typically a system that includes the plants, growing media, drainage system, and root barrier.” ...

Susan and Neil Whoriskey have one of those green roofs, in Brooklyn Heights. Last fall, the couple hired Inger Staggs Yancey, of Brooklyn Greenroof, to install a sedum garden on a 250-square-foot ...