High Level Results: Roofing Designs for Maximum Sustainability

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High Level Results Roofing Designs for Maximum
Sustainability

• Tim G. Pennigar
• Project Manager, Structural Systems
• Duke University Health System
• Durham, North Carolina

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Objectives

• Enlarge your definition of Sustainability
• Offer a design rationale that will consistently
  improve quality and building performance
• Show how Reduce, Reuse, Recycle can preserve your
  job as well as the environment.
• Invite you to change the future
• of the building design and
• construction industry

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How do you spell Sustainability?

• Suitability
• Durability
• Maintainability

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Count the Costs

• 40 Million tons of roofing demolition debris
  annually roughly 25 of U.S. total CD waste
  stream in our landfills.
• Continual drain on our institutional resources,
  missed opportunities
• Hidden and peripheral damage
• Loss of customer or occupant goodwill and trust
• Surcharge on future generations

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Guiding Principles(for better, more sustainable
outcomes)

• Favor insulations or insulating assemblies that
  are highly resistant to water and physical
  damage.
• Favor roof assemblies that position the roofing
  membrane directly over a permanent or
  semi-permanent substrate.
• Favor roof designs that prohibit or highly
  discourage the entrapment of water within the
  roof assembly.
• Favor membrane and insulation designs that are
  capable of in-place reuse or recycle in future
  roof iterations.

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Guiding Principles

• Favor roofing designs that prohibit or highly
  discourage the entrapment of moisture within the
  roof assembly.
• Favor membrane and insulation designs capable of
  in-place reuse or recycle in future roof
  iterations.

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Guiding Principles

• Favor insulations or insulating assemblies that
  are highly resistant to water and physical
  damage.
• Favor roof assemblies that position the roofing
  membrane directly over a permanent or
  semi-permanent substrate.
• Favor roof designs that prohibit or highly
  discourage the entrapment of water within the
  roof assembly.
• Favor membrane and insulation designs that are
  capable of in-place reuse or recycle in future
  roof iterations.

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Guiding Principles

• Favor insulations or insulating assemblies that
  are highly resistant to water and physical
  damage.
• Favor roof assemblies that position the roofing
  membrane directly over a permanent or
  semi-permanent substrate.
• Favor roof designs that prohibit or highly
  discourage the entrapment of water within the
  roof assembly.
• Favor membrane and insulation designs that are
  capable of in-place reuse or recycle in future
  roof iterations.

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Guiding Principles

• Favor insulations or insulating assemblies that
  are highly resistant to water and physical
  damage.
• Favor roof assemblies that position the roofing
  membrane directly over a permanent or
  semi-permanent substrate.
• Favor roof designs that prohibit or highly
  discourage the entrapment of water within the
  roof assembly.
• Favor membrane and insulation designs that are
  capable of in-place reuse or recycle in future
  roof iterations.

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When Extraordinary Happens2007 Lifecycle
Building Challenge
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Design for DestructionGuiding Principles

• 1 Use non-durable materials easily damaged by
  water and physical abuse.
• 2 Configure non-durable materials to ensure
  maximum exposure to water damage and physical
  abuse.
• 3 Use attachment methods that guarantee maximum
  destruction of reusable components during future
  roofing
• 4 Use high risk DfD (Destined for Dumpster)
  strategies to ensure total roof membrane tearoff
  in the future. (Dont worry Building occupants
  love to relocate during roof flood remediation.)

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Duke Heliport by the Numbers

• Tons of CD solid waste diverted from the
  landfill - 718 tons equaling 3,184 cubic yards
• Board feet of salvaged XPS insulation certified
  for reuse on future Duke projects - 296,887 board
  feet
• Dollar value of XPS salvage - 133,000
• Landfill tipping fees avoided - 29,797
• Heavy vehicle transportation miles avoided -
  2,120 miles / 265 gal of fuel

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Green Design Demands Good Design

• What you can start TODAY
• Get your House in order
• Find or assign an Owners Advocate
• Capture institutional memory (start a Lessons
  Learned narrative)
• Get Involved Spread the Word!

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Questions?