Greenroofs.com Project of the Week for October 2, 2017: Hedgegate

October 2, 2017 at 3:08 pm

Greenroofs.com Project Week October 2 2017 Hedgegate

Hedgegate
Sea Ranch, CA, USA
 1,800 sf Greenroofs & 300 sf Greenwall

Greenroofs.com Project Week October 2 2017 Hedgegate

Greenroofs.com Project of the Week: October 2, 2017

Mini Description & Details

Hedgegate is an award-winning private residence in Sea Ranch, located west of California Highway 1 on California’s scenic north Sonoma coast. The site and structures are regulated to preserve the view of the Pacific Ocean.

The limited 1300 sf of conditioned space and the 16-ft. height above the coastal meadow enable Hedgegate to sit lightly on the land, featuring dual living roofs and a green wall. The HOA provisions strictly limit approved species not only to California natives, but to a limited list of species specific to the local flora of the coastal meadow and coastal terrace ecological systems.

Greenroofs.com Project Week October 2 2017 Hedgegate

Greenroofs.com Project Week October 2 2017 Hedgegate

Owner architect Janet MacKinnon of AE Design used her modular sodpodmod system for propagation and delivery of local native species within a 5-inch growing media depth from rooflite and Enkadrain drainage from BonarBuilt. Each window of the main upper level of Hedgegate looks over the lower green roof, and the lower roof provides space for edible plants outside the kitchen.

The rainwater and stormwater from the roof, retaining wall, rain room, and driveway is collected in this drought-prone location in two 2,000 gallon underground cisterns for drip irrigation of the living roofs. Graywater is collected for irrigation of the ground landscaping.

The low water demand of the 3-inch depth of the green wall, made from Sedum Mat from Sempergreen plus additional natives and exotics, is met using a closed loop, drip irrigation system, recirculating water from the Koi pond at the base of the green wall.

Greenroofs.com Project Week October 2 2017 Hedgegate

Greenroofs.com Project Week October 2 2017 Hedgegate

The living roof in the foreground seamlessly integrates with the rolling coastal hills. September 29, 2017.

More

As a prototype, Hedgegate exemplifies how water systems can be integrated into a net zero home. The owners gladly open their home that, to date, has been toured by over 300 local visitors (including architects and builders).

Annually, thousands of travelers on California Highway 1 plus hikers and bikers on the parallel trails on each side of the highway experience the beautiful Hedgegate green roofs in the foreground of their view of the Pacific Ocean and the California Coastal National Monument.

Greenroofs.com Project Week October 2 2017 Hedgegate

Publisher’s Note:

Hedgegate recently won the 2017 Small Scale Residential Design Awards of Excellence from Green Roofs for Healthy Cities at CitiesAlive 2017.

Year: 2016
Owner: Private
Location: Sea Ranch, CA, USA
Building Type: Single-Family Residential
Type: Extensive
System: Custom
Size: 1,800 sq.ft. greenroofs and 300 sq. ft. greenwall
Slope: 2 – 10%
Access: Accessible, Private

Greenroofs.com Project Week October 2 2017 Hedgegate

Greenroofs.com Project Week October 2 2017 Hedgegate

Designers/Manufacturers of Record:

Owner, Architect & Construction: Janet MacKinnon, AE Design
Stormwater, Graywater and Living Roof Design: Paul Kephart, Rana Creek Design
Rainwater & Graywater Systems and Green Roof & Irrigation: Kevin Heston, Project Manager, AE Design
Modular Greenroof System: Janet MacKinnon, sodpodmod
Structural Engineer: I.L. Welte & Associates
Growing Media: Joe DiNorscia, rooflite
Drainage: Enkadrain, BonarBuilt
Greenwall Vegetation: Sedum Mat, Sempergreen
Roofing Membrane: GacoFlex, Gaco Western
Irrigation: DIG Corporation
Architectural Photographer: Jonnu Singleton

Greenroofs.com Project Week October 2 2017 Hedgegate

Greenroofs.com Project Week October 2 2017 Hedgegate

All the Info:

View the Hedgegate PROJECT PROFILE to see ALL of the Photos and Additional Information about this particular project in The International Greenroof & Greenwall Projects Database.

Greenroofs.com Project Week October 2 2017 Hedgegate

Project of the Week Video Feature

Watch the Hedgegate Project of the Week Video below or see it on our GreenroofsTV channel on YouTube:

Greenroofs.com Project of the Week 10/02/17 video photo credits: All by Jonnu Singleton and Janet MacKinnon, courtesy of Janet MacKinnon of AE Design.

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Love the Earth, Plant a Roof (or Wall)!

By Linda S. Velazquez, ASLA, LEED AP, GRP
Greenroofs.com Publisher & Greenroofs & Walls of the World™ Virtual Summit Host

Register now and join us online for our 2017 Virtual Summit through December, 2017.  Extended: Submit your Under 10-Minute Video by October 10th ~ Round #2 starts on October 16th!

Greenroofs.com Project Week October 2 2017 Hedgegate

Greenroof Project of the Week for June 24, 2013: City of Minneapolis Target Center Arena

June 28, 2013 at 1:48 pm

City of Minneapolis Target Center Arena
Minneapolis, MN, USA
113,000 sf. Greenroof

Project Description & Details

The 20,500-seat Target Center is home of the NBA’s Timberwolves, concerts and other events, and when the Target Center Arena needed a new roof, the City of Minneapolis chose to model a sustainable building and stormwater management approach by re-roofing with a green roof, the first installed on an arena in North America. Approximately 1 million gallons of stormwater are captured annually by the 2.5 acre green roof, preventing drainage into the Mississippi River.

Designed by Leo A. Daly and Kestrel Design Group, the pattern of the pavers that divide the growing zones reveal a design based on veins of a leaf from afar. The Target Center green roof consists of a state-of-the-art waterproofing membrane from Sika Sarnafil, Bonar (formerly Colbond) Enkadrain, a 2.75 inch deep growing zone in the center of the main arena roof structure and a deeper 3.5-inch growing zone around the perimeter where the structural capacity is greater to maximize the rooflite® Extensive MCL growing medium. A pre-grown Sempergreen sedum mat was supplemented with native plugs and seed to enhance plant diversity and ecological resilience and to reflect the mix of flora found in the dolomite bluffs overlooking the Mississippi and Minnesota rivers – while a few have failed, about 30 species flourish on the roof.

Year: 2009
Owner: City of Minneapolis
Location: Minneapolis, MN, USA
Building Type: Commercial
Type: Extensive
System: Custom
Size: 113,000 sq.ft.
Slope: 1%
Access: Inaccessible, Private

Designers/Manufacturers of Record:

Waterproofing Membrane & Insulation: Sika Sarnafil
Roofing Consultant: Inspec
Landscape Architect/Greenroof Designer: Kestrel Design Group, Inc.
General Contractor: Stock Roofing, a Tecta America Company
Architect: Leo Daly
Electric Field Vector Mapping (EFVM®): International Leak Detection (ILD)
Drainage & Filter Layer: Bonar (formerly Colbond)
Irrigation: KISSS
Water Retention Layer: American Engineering Fabrics
Growth Media: rooflite® Extensive MCL
Pre-Vegetated Mat Manufacturer: Sempergreen
Coverboard: DensDeck Prime Roof Board, Georgia-Pacific Gypsum

Click here to see more information about this project in The International Greenroof & Greenwall Projects Database.

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Love the Earth, Plant a Roof!

~ Linda V.