US EPA AWBERC Roof Replacement
The U.S. EPA AWBERC Annex 2 building is covered with over 50% of its flat roof with a 4” deep Green-grid roof system. The system is planted with hardy sedums, which achieve maturity after two years. After an initial watering in period, the plants survive with rainwater alone. The roof is installed as a series of 2x4 trays that can be easily adjusted to allow routine maintenance.