Green Roof System - GreenGrid

Here's a posting from a friend at Tribe.net interested in green roof development, and I wonder how hard can this really be, and how much of this goes on in NEO?

From Georgie's Tribe blog...http://people.tribe.net/terraverde:

...I'm helping James Kalin prototype the Green Roof on the LBOW (LEEDS Building On Wheels) project. In my system, run-off water will fall into the Slow Sand Filter. I'll have to check with a structural engineer to make sure I can support the additional weight.

James showed me the GreenGrid (www.greengridroofs.com [1]) trays going on the LBOW roof. It's basically a recycled-content HDPE tray that holds your plantings.

There are three depths (2.5", 4", 8") that allow you to either go with surface plantings or edibles. Pick between 2'x2' or 2'x4' modules, throw on a root barrier, soil, plants and mulch. Again, these are just plastic trays with a root barrier laid on top. Definitely DIY'able.

The manufacturer highlights the following benefits:
• Reduced Energy Costs
• Reduced Urban "Heat Island" Effect
• Sound Insulation
• Extended Roof Life
• Stormwater Management

This is a good primer on GreenRoofs:
www.damonfarber.com/Green_Ro...0Roof.pdf [2]