The Effects of Roofing Type on

Indoor Temperature

By Lucy Goodwin-Johansson, Jozef Lisowski, and James Hollingsworth

Procedures/Materials

Data Analysis: Method OneAvg. Green/Ambient Avg. White/Ambient Avg. Black Ambient

Day .775 1.21 1.42

Evening .918 1.06 1.06

Inside Temp. Black Roof

On Top Temp. Black Roof

Inside Temp. White Roof

On Top Temp. White RoofAmbient Temp.

Figure 1: Graph of time vs. temperature for 05/10/10 3:30-5:30 p.m.

Inside Temp. Black Roof

Ambient Temp.

Under Temp. Green Roof

Inside Temp. Green Roof

Figure 2: Graph for 05/11/10 from 1:00-2:45 p.m. "Under Temp Green Roof" represents the temperature underneath the Xero Flor America roof.

Table 1: Ratio of the ambient temperature to the inside temperature.

Data Analysis: Method Two• ΔT Calculations. Numerical Analysis

ΔT for Black roof Average ΔT for Black Roof ΔT for green roof Average ΔT for green roof

8.46723039 8.983151618 0.53124947 0.605152869

8.07009822 0.57844728

9.46269425 0.60299146

10.51017021 0.53024201

10.67086823 0.69903497

9.69137956 0.62678357

8.99390499 0.60261281

8.60897073 0.65095957

8.07772005 0.52958599

7.27847955 0.69962156

Data Analysis: Method Three

Figure 1: White & Black boxes, 5/10, 10:45 a.m.

Conclusion

• Green roof is preferred for NCSSM Campus• Green roofs reduce the indoor temperature

relative to the ambient temperature during warm weather.

• Green roofs do the best job of retaining temperature within a closed roof system.

• Green roofs have a smaller temperature range than white and black roof systems.

Special Thanks

Dr. SchmalbeckThe Maintenance Department

SecurityDr. Rough