We have a Green Roof
The Nancy C. Sawin Math/Science Center building has sported a “green roof” since 2007—the first for a Delaware school.
The sedum bedecking the flat roof:
- Saves energy by keeping the building cooler in the summer.
- Reduces the urban “heat island” effect.
- Slows the natural deterioration of the roof by protecting it from UV radiation and temperature-related expansion and contraction.
- Filters pollutants from rainwater and air.
- Reduces by 50–60% the volume and speed of erosion-causing runoff.
- Reduces the “silting in” of Cab Calloway Pond adjacent to the building, making it more hospitable for a variety of beneficial plants, animals, aquatic life, and organisms.
- Contributed to a 10% energy savings in the roof’s first year alone.
- Provides a hands-on learning opportunity for students of all ages in a variety of disciplines, from biology and physics to civil engineering, economics, and environmental science.