1. Historical Warranty Repair Cost: A Measure Of Long-Term Roof System Performance James L. Hoff Firestone Building Products

2. Roof System Performance: Where To Measure When To Measure How To Measure What To Measure

3. Roof System Performance: Where To Measure Laboratory Field

4. Roof System Performance: When To Measure Short-Term versus Long-Term One-Time versus Periodic

5. Roof System Performance: How To Measure Anecdotal Approach Statistical Approach

6. Roof System Performance: What To Measure Frequency Of Incident Economic Impact

7. Roof System Performance: The Ideal Measure Based On Field Observation Long-Term Approach Statistically Significant Based On Economics

8. In-Service Performance Information. Long-Term Focus Large, Statistically Significant Population Cost-Based Measurement Roof System Performance: The Warranty Data Base As A Useful Tool

9. EPDM, APP & SBS Roofing Systems Installed From 1982 To Present Over 20,000 Roofs / 2 Billion Square Feet Roof System Performance: The Warranty Data Base Used In This Study:

10. Detailed System Information Detailed Service History Roof System Performance: The Warranty Data Base Used In This Study:

11. Frequency Of Roof Repair Service Relative Repair Cost Over Time Relative Repair Cost Of Different Systems & Components. Roof System Performance: The Warranty Data Base Can Be Used To Measure:

12. Historical Repair Cost: Cost / Square Meter / Service Year Actual Spending Indexed To A Base Year Actual Spending Divided By Total Surface Area Actual Spending During A Specified Service Year

13. 19841985198619871988198919901991199219931994.031.047.224.325.509.689.366.290.382.538.363 Repair Costs By Service Year: 1984 EPDM Roofs ( Indexed Cost Per Square Meter ) Year Maintenance Performed Year Service Performed

14. 19851986198719881989199019911992199319941995.038.054.160.182.300.267.186.238.292.243.217 Year Maintenance Performed Year Service Performed Repair Costs By Service Year: 1985 EPDM Roofs ( Indexed Cost Per Square Meter )

15. 19861987198819891990199119921993199419951996.011.054.116.167.153.159.133.234.224.169.160 Year Service Performed Repair Costs By Service Year: 1986 EPDM Roofs ( Indexed Cost Per Square Meter )

16. 19871988198919901991199219931994199519961997.017.041.083.111.101.113.112.130.115.099.076 ActualProjected Year Service Performed Repair Costs By Service Year: 1987 EPDM Roofs ( Indexed Cost Per Square Meter )

17. 19881989199019911992199319941995199619971998.016.028.042.072.086.109.098.087.083.074.066 ActualProjected Year Service Performed Repair Costs By Service Year: 1988 EPDM Roofs ( Indexed Cost Per Square Meter )

18. 19891990199119921993199419951996199719981999.017.038.054.059.087.097.099.087.073.059.042 ActualProjected Year Service Performed Repair Costs By Service Year: 1989 EPDM Roofs ( Indexed Cost Per Square Meter )

19. 19901991199219931994199519961997199819992000.005.012.031.078.083.092.075.066.059.050.042 ActualProjected Year Service Performed Repair Costs By Service Year: 1990 EPDM Roofs ( Indexed Cost Per Square Meter )

20. 19911992199319941995199619971998199920002001.000.007.038.054.066.068.059.050.042.040 ActualProjected Year Service Performed Repair Costs By Service Year: 1991 EPDM Roofs ( Indexed Cost Per Square Meter )

21. Repair Costs By Service Year: 1984 - 1991 EPDM Roofs ( Indexed Cost Per Square Meter ).000.100.200.300.400.500.600.700 0 12345678910 1984 Roofs1985 Roofs 1986 Roofs1987 Roofs 1988 Roofs 1989 Roofs 1990 Roofs 1991 Roofs Year Of Service

22. Year Roof Installed 0.0 1.0 2.0 3.0 4.0 5.0 6.0 7.0 1982198319841985198619871988198919901991 6.52 4.67 3.99 2.10 1.44 1.00 0.75 0.72 0.65 0.52 EPDM Roof Repair Costs: First Five Years Of Service ( Indexed Cost Per Square Meter ) 1987 Roofs = 1.00

23. EPDM Actual / Projected Repair Costs: First Ten Years Of Service ( Indexed Cost Per Square Meter ) Actual Year Roof Warranted 0.0 1.0 2.0 3.0 4.0 5.0 6.0 7.0 1982198319841985198619871988198919901991 6.5 5.2 3.8 2.2 1.6 1.0 0.8 0.7 0.6 0.4 1987 Roofs = 1.00 Projected

24. EPDM Repair Costs By System Type: First Five Years Of Service ( Indexed Cost Per Square Meter ) Year Roof Installed Ballasted Adhered Mech. Attached 0.0 2.0 4.0 6.0 8.0 10.0 12.0 14.0 16.0 1982198319841985198619871988198919901991 1987 Average For All Systems = 1.00

25. New / Re-Roof / Re-Cover: First Five Years Of Service ( Indexed Cost Per Square Meter ) Year Roof Warranted New Construction Re-Roof Recover ( Tear-Off ) 1987 Average For All Roofs = 1.00 0.0 1.0 2.0 3.0 4.0 5.0 1982198319841985198619871988198919901991

26. EPDM Repair Costs By Component: First Five Years Of Service ( Indexed Cost Per Square Meter ) Year Roof Warranted Seams Perimeters Other 0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 1987 Total For All Components = 1.00 1982198319841985198619871988198919901991

27. EPDM Roof System Performance Improvements To Component Technology: 1985 - 1986 1987 - 1988 1988 - 1991 1993 - Pres. Butyl-Based Splice Adhesive Uncured EPDM Flashings Tape Laminates Improved Perimeter Details Seam Tape & High-Solids Primer

28. 1993 % Roofs With Call-Backs In First Two Years: 1994 43% Lower 46% Lower Year Roof Warranted Adhesive Seams Tape Seams

29. EPDM Repair Costs By Contractor Status: First Five Years Of Service ( Indexed Cost Per Square Meter ) 1987 Average For All Contractors = 1.00

30. Modified Bitumen Repair Costs

31. 1.00 1.85 0.75 0.72 1.41 1.20 0.65 0.52 1.321.33 EPDM / Modified Bitumen Repair Costs: First Five Years Of Service ( Indexed Cost Per Square Meter ) Year Roof Warranted

32. APP / SBS Repair Costs First Five Years Of Service ( Indexed Cost Per Square Meter ) 1.85 1.99 1.19 1.20 1.41 1.85 Year Roof Warranted

33. Roof System Performance: Modified Bitumen Repair Costs Systems In 1987 - 1991 Data Base Are Predominantly 1-Ply Systems. Repair Costs Are Predominantly Related To Seams.