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Relevant Mandates and Rating Systems

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Mandates / Standards Rating Systems

The Guiding Principles for Sustainable Federal Buildings: New Construction and Modernization

  • Allow sustainable landscape design principles and meet or exceed EISA section 438 stormwater management requirements.
  • The principles encourage the use of life-cycle cost-effective renewable energy projects on-site, potentially including the installation of rooftop solar panels.

Determining Compliance with the Guiding Principles for Sustainable Federal Buildings

Relation to Green Roof: guiding principles

The Guiding Principles for Sustainable Federal Buildings: Existing Buildings

  • Promote strategies to reduce stormwater runoff and discharges of polluted water offsite to protect the natural hydrology and watershed health.
  • The principles encourage the use of life-cycle cost-effective renewable energy projects on-site, potentially including the installation of rooftop solar panels.

Determining Compliance with the Guiding Principles for Sustainable Federal Buildings

Relation to Green Roof: guiding principles

P100 Facilities Standards

The GSA P100 Facilities standards establishes various requirements for several tiers of high performance federal buildings, with more stringent requirements getting awarded higher . The requirements for tier improvements include requirements for waterproofing, roof replacement, vegetative systems, roof drainage systems, roof service life, among others. Learn more at GSA's P100 page.

Relation to Green Roof: waterproofing, roof replacement, vegetative systems, roof drainage systems

Presidential Memorandum - Creating a Federal Strategy to Promote the Health of Honey Bees and Other Pollinators

The President issued a memorandum directing U.S. government agencies to take additional steps to protect and restore domestic populations of pollinators, including honey bees, native bees, birds, bats, and butterflies. Green roofs with flowering plants can  provide habitats and food supplies for pollinators. Learn more at the White House Press Office.

Relation to Green Roof: vegetation

Energy Independence and Security Act (2007)

The Energy Independence and Security Act (EISA) requires projects involving any Federal facilities with a footprint that exceeds 5,000 square feet to maintain or restore, to the maximum extent technically feasible, the predevelopment hydrology of the property with regard to the temperature, rate, volume, and duration of flow (EISA Section 438). Stormwater management provided by a green roof can help federal agencies meet this requirement. For more information, see EISA 2007 and EPA's Technical Guidance for meeting EISA Section 438 stormwater runoff requirements.

Relation to Green Roof: stormwater management

Environmental Policy Act of 2005 (EPAct 2005)

The Environmental Policy Act of 2005 offers tax incentives for many energy and sustainability improvements that green roofs can provide. A tax incentive of up to $1.80 per square foot of buildings that demonstrate certain energy efficiency requirements can be given. More information is available from the Department of Energy.

Relation to Green Roof: tax incentive, energy efficiency

Other Guidelines

Many institutions outside of the federal government are creating guidelines and standards for green roofs. ASTM International has developed standard guidance for green roofs (E2777-14), as well as standards for vegetation (E2400-06) and the calculation of the dead (E2399-11) and live loads of a green roof (E2397-11). The American National Standards Institute has issued standards regarding how to take wind into account when building a green roof (RP-14) and how to prevent fires (VF-1).

Relation to Green Roof: standards