1. Cool Roof Rating Council Technical Committee November 17, 2008 TRI Presentation Tile Rating Recommendations

2. Scope of Research Evaluate the current methods available. Provide recommendations back to the CRRC for tile testing.

3. What we looked at The 2 methods suggested by the CRRC were; ASTM C1549 CRRC-1 utilizing the Reflectometer. ASTM E1918 (modified) as per Hashem outline utilizing the Pyranometer.

4. What the TRI did Ron Ogawa ORNL. Commissioned Ron Ogawa and Associates a certified CRRC lab to provide evaluation of the above test methods. Collaborated with Andre’ at ORNL. Provided a round robin test program in May of 2008. Provided more in depth research with 2 independent labs

5. Testing Procedure Ron Ogawa performed the following; ASTM C1549 utilizing the Monte Carlo approach. ASTM E1918 (Modified) utilizing the 9 tile (3 Meter) configuration per panel. Simulated template method on tile for C1549

6. Issue Considerations The ability to provide delineation for tile profile effects. The ability to address tiles with variegated color within the tile body.

7. We worked as Industry to Research the right approach for tile ASTM C1549 Reflectometer ASTM E1918 Pyranometer

8. What the Round Robin Found Our research collaborated the initial findings. did not delineate the profiles The 1918 Pyranometer test method as provided did not delineate the profiles of the tile as suggested. Found Similar results as the Metal Industry Found Similar results as the Metal Industry in not being able to get reliable data from E1918 method.

9. What we found ability to correlate No ability to correlate the C1549 results to the E1918. Lack of consistency Lack of consistency in readings for similar tiles with the E1918.

10. The Method IS NOT Ready not repeatable and consistent While E1918 does have positive attributes as a test method, it is not repeatable and consistent for use; External affects of color and heat come into play. Change in readings possible during course of time frame (10:00AM – 2:00 PM) Ability to have constant “clear” sky not likely. Small amounts of haze affect.

11. Reflectometer Approach Attempts to follow the C1549 Monte Carlo testing procedure seemed to provide the most consistent readings. Able to read flat and some curvature with consistent readings. offerthe best we can identify at this time While not a perfect test method, seems to offer the best we can identify at this time.

13. Sample of Concrete tiles Looked at

14. Sample of Clay tiles Looked at

16. MFGProfileColorC 1549 Avg. # of Read Std Dev E 1918Temp- late MCA Low Tobacco* 0.302300.0030.2820.359 MCA Med Tobacco* 0.293300.0050.2840.348 MCA High Tobacco 0.358300.0040.2570.357 MCA Low Irnwood* 0.181300.0020.1800.231 MCA Med Irnwood* 0.173300.0040.1690.224 MCA High Irnwood 0.232300.0050.1830.238 Hanson Low Bronze 0.227600.0150.2070.227 Hanson Med Bronze 0.246480.0090.1590.240 Hanson High Bronze 0.256600.0070.2080.249 TRI – Cool Roof Rating Research Project * Specimens sealed before ORNL tests ORNL DATA

17. MFGProfileColorC 1549 Avg. # of Read Std Dev E 1918Temp- late Hanson Low Brown 0.136600.0080.1170.128 Hanson Med Brown 0.141480.0100.1100.127 Hanson High Brown 0.128660.0070.0860.116 Eagle Low Terra- cotta 0.273600.0090.2250.266 Eagle Med Terra- cotta 0.225480.0090.2010.227 Eagle High Terra- cotta 0.253600.0070.2010.247 Eagle Low Tan 0.219600.0110.1880.223 Eagle Med Tan 0.186480.0070.1280.183 Eagle High Tan 0.206600.0070.1490.192 TRI – Cool Roof Rating Research Project ORNL DATA

18. What we propose at this time ASTM C1549 with a Template ASTM C1549 with a Template Create a template for a tile. (Allows tile to be tested at same location at the 3 year mark) Measure readings at 6 locations determined to best represent the tile and color variegation. Perform on 9 tiles Total of 54 readings per test.

19. Had Ron Ogawa re-run C1549 Actual template Method on a flat tile

20. MFGProfileColorC 1549 Avg. # of Read Std Dev E 1918Temp- late Hanson Low Brown 0.136600.0080.1170.128 Hanson Med Brown 0.141480.0100.1100.127 Hanson High Brown 0.128660.0070.0860.116 Eagle Low Terra- cotta 0.273600.0090.2250.266 Eagle Med Terra- cotta 0.225480.0090.2010.227 Eagle High Terra- cotta 0.253600.0070.2010.247 Eagle Low Tan 0.219600.0110.1880.223 Eagle Med Tan 0.186480.0070.1280.183 Eagle High Tan 0.206600.0070.1490.192 TRI – Cool Roof Rating Research Project 0.276 Ron Ogawa Template

24. exterior Use exterior Paint and a small brush to add the info rmation on back “N” Add “N” on This side to Indicate North for any retest for Template alignment Add MLT Add Tile # (1 through 9) Add SAP #

25. TRI Suggestion for a testing method. What we found Clay seemed to need less than 30 readings to meet the criteria. Concrete needed about 45-50 Our suggestion of 54 would insure we have made the best possible effort to obtain a fair and proper reading.

27. Summary We would recommend the C1549 test method with the Template configuration as suggested. not perfectbest we can offer at this time While not perfect, it is the best we can offer at this time. CRRC blessing We ask for the CRRC blessing to utilize this method, since the time is running on the implementation date for formal ratings.