Ecoroof

The following is from an eletter I received from Earth Advantage Inc:

Ecoroof - Buzz Word of the Month

An ecoroof, or "green" roof is a vegetated roof system used in place of a conventional roof. Ecoroofs are comprised of several layers including a root barrier, waterproof membrane, drainage, soil system, and plants. Ecoroofs can double or triple the life span of the roof, add insulation to a building, and create additional usable space.

The City of Portland has approved Ecoroof systems as a storm water management technique, and provides incentives to qualify owners.

You can learn more about Ecoroofs at HGTV's web site here.