+65,000 sf of extensive green roofs built

of intensive green roofs built

+40,000 sf

+35,000 sf

of green roofs are on the boards or under construction

SUSTAINABLE STRATEGIES CASE STUDY

Asa Flats + Lofts: 2010 International Green Roof Award of Excellence from Cities Alive

Green RoofsSelect Built Projects

FinancialBenefit

ValueAdded Location

Asa Flats + LoftsLEED® Gold

FAR BonusLocal FoodProduction

Portland, OR

Bertschi Science WingLiving Building Challenge*

ExpeditedPermitting

EnvironmentalEducation

Seattle, WA

The LovejoyLEED Gold

FAR BonusStormwater and Habitat

Portland, OR

George F. Russell Jr. HallLEED Gold

Lower Fees (Connection)

Stormwater and Habitat

Seattle, WA

The Allison Inn & SpaLEED Gold

MarketDistinction

Heat Island Mitigation

Newberg, OR

Leva on MarketMarketDistinction

Open SpaceAmenity

Seattle, WA

Burien Town Square, Parcel 1BuiltGreen*

MarketDistinction

Open SpaceAmenity

Burien, WA

The CobbLEED Silver

MarketDistinction

Open SpaceAmenity

Seattle, WA

Florera & HjartaLEED Silver

MarketDistinction

Open Space Amenity

Seattle, WA

Stoneway AptsLEED Silver

MarketDistinction

Open SpaceAmenity

Seattle, WA

Broadway CrossingLEED Silver

MarketDistinction

Open SpaceAmenity

Seattle, WA

Norpoint Park RestroomMarketDistinction

EnvironmentalEducation

Seattle, WA

*Certification under pursuit.

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G G L O 1 3 0 1 F i r s t A v e . S u i t e 3 0 1S e a t t l e , W A 9 8 1 0 1

tel 206.467.5828fax 206.467.0627 www.gglo.com

Sustainable Strategies Case StudyGreen Roofs

GGLO's expertise covers a variety of green roof types, both extensive and intensive, including vegetated mats, plugs and cuttings, nursery stock, and vegetated modules.

Financial Benefits• Market Distinction: Green Roofs can help increase the real estate value

of a property, and the marketability of the building as a whole. • Cost Savings for Roof Membrane: Green roofs protect the roof

membrane and can increase its lifespan significantly.• Lower Fees/FAR Bonus: Green roofs can lower a project's stormwater

connection fees and provide Floor Area Ratio (FAR) bonuses.• Minimal Maintenance: Green roofs can be maintained for a low cost

when using indigenous plants and plant types that thrive in shallow soils.• Code Benefit: Green Roofs can lighten zoning requirements and help

meet green building codes, like Seattle's Green Factor, and may contribute to expedited permitting.

Environmental Benefits• Retain and Filter Stormwater: Green roofs absorb stormwater, which

reduces runoff into city storm systems, and disperses excess water through evapotranspiration. Additionally, plants filter out pollutants and heavy metals found in stormwater.

• Increase Habitat and Biodiversity: Green roofs create or restore natural habitat, and can promote biodiversity with a variety of plants that attract wildlife.

• Reduce Heating Loads: Green roofs add mass and thermal resistance value to the building envelope, thereby reducing heat loss and energy consumption.

• Combat Urban Heat Islands: The surface temperature of green roofs is much lower than on standard roofs and when green roofs are grouped together in urban environments they can help counter 'heat island' effects.

Community Benefits• Open Space Amenity: Green Roofs can make restricted spaces

accessible, socially contributing to a building's amenities and creating community spirit.

• Local Food Production: Green roofs can provide space for urban farming and rooftop vegetable gardens.

• Sound Insulation: Green roofs help insulate a building for sound; soil blocks low frequencies such as traffic, machinery, and airplanes, and plant material blocks high frequencies like sirens and whistles.

• Aesthetically Pleasing: Green roofs are nice to look at, particularly when viewed from above, a common occurrence in urban settings.

• Environmental Education: Green roofs quickly communicate environmental sustainability goals and can be used as an educational feature in a structure's design.

^ Allison Inn & Spa | A green roof surrounds the solar hot water panels and provides foreground for the vineyards and pastoral landscape beyond.

^ Asa Flats + Lofts | Green roofs above lofts catches, conveys and clarifies stormwater, which is routed to a community courtyard below.

^ Bertschi Science Classroom | A moss-mat green roof complements the interior's green wall and is a major component of this building's design, which is on target to be the first certified Living Building in Washington.

^ The Lovejoy | A combination of extensive and intensive green roofs retain stormwater and convey the story of the Willamette and Columbia rivers' confluence.