5702 Georgia Ave NW – Green Roof

About the project

Date: September 14, 2022
Client: 5702 Georgia Ave NW
Address: 5702 Georgia Ave NW

Project Information Achieve unrivaled performance with our 8” Semi-Intensive Green Roof. This system delivers maximum stormwater retention (up to 90%), provides the highest R-value for optimal energy ROI (up to 95% heat transfer reduction), and supports a diverse, high-appeal landscape of grasses, perennials, and small shrubs.

4” Extensive Green Roof (4,096 SF) Data

4” Extensive Green Roof (4,096 SF):
Key Performance Data

Category	Metric / Estimated Data	Client Value Proposition & Application
System Classification	Type:	Standard Extensive Green Roof
	Most Budget-Friendly:	Ideal where budget and structural capacity are the primary limitations; focuses purely on high-impact environmental performance.
Structural & Logistics	Saturated Weight:	Typically 15 – 25 lbs/ft² (Very lightweight).
Structural & Logistics	Total System Weight (Saturated):	61,440 – 102,400 lbs (30.7 – 51.2 tons).
Stormwater Compliance	Annual Water Retention:	40% to 60% of annual rainfall.
Stormwater Compliance	Meets Minimum Compliance:	Effectively captures and retains smaller, more frequent storm events required for WQv (Water Quality Volume) credits.
Max Single-Event Retention:	Retains approximately 0.6 to 0.75 inches of rainfall depth. ()
Energy & Asset Life	Thermal Performance:	Reduces HVAC cooling costs by 10-20% and blocks UV rays.
Energy & Asset Life	Urban Heat Island Effect:	Surface temperature reduction of up to ().
Horticulture & Installation	Plant Palette & Health:	Limited to hardy, drought-tolerant plants, primarily Sedum cuttings and low-growing succulents.
Horticulture & Installation	Installation Method:	Sedum Cuttings/Blankets over a drainage layer