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

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Presentation transcript:

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

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

Roof System Performance: Where To Measure Laboratory Field

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

Roof System Performance: How To Measure Anecdotal Approach Statistical Approach

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

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

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

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:

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

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:

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

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

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

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

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

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

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

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

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

Repair Costs By Service Year: EPDM Roofs ( Indexed Cost Per Square Meter ) Roofs1985 Roofs 1986 Roofs1987 Roofs 1988 Roofs 1989 Roofs 1990 Roofs 1991 Roofs Year Of Service

Year Roof Installed EPDM Roof Repair Costs: First Five Years Of Service ( Indexed Cost Per Square Meter ) 1987 Roofs = 1.00

EPDM Actual / Projected Repair Costs: First Ten Years Of Service ( Indexed Cost Per Square Meter ) Actual Year Roof Warranted Roofs = 1.00 Projected

EPDM Repair Costs By System Type: First Five Years Of Service ( Indexed Cost Per Square Meter ) Year Roof Installed Ballasted Adhered Mech. Attached Average For All Systems = 1.00

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 =

EPDM Repair Costs By Component: First Five Years Of Service ( Indexed Cost Per Square Meter ) Year Roof Warranted Seams Perimeters Other Total For All Components =

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

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

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

Modified Bitumen Repair Costs

EPDM / Modified Bitumen Repair Costs: First Five Years Of Service ( Indexed Cost Per Square Meter ) Year Roof Warranted

APP / SBS Repair Costs First Five Years Of Service ( Indexed Cost Per Square Meter ) Year Roof Warranted

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