We Are North America’s Industry Association For Green Roofs and Green Walls
Advancing Living Architecture: Education, Advocacy, and Excellence
Green Roofs for Healthy Cities (GRHC) develops and protects the market by increasing the awareness of the economic, social, and environmental benefits of green roofs, green walls, and other forms of living architecture through education, advocacy, professional development, and celebrations of excellence. GRHC provides online training through the Living Architecture Academy, publishes the quarterly Living Architecture Monitor Magazine, runs in-person and online conferences and events, advocates for supportive green roof and wall policy, provides resources to our members, celebrates outstanding projects, and more.
Join Us at CitiesAlive in New York City!
You’re invited to the 20th CitiesAlive Conference on September 30 to October 2 in Brooklyn, New York City to help to advance the green roofs and green wall industry. As one of the world’s most influential hubs for sustainability, policy, architecture, and design, New York City is the ideal place to gather, learn, and celebrate the future of living architecture.
2026 Regional Grey to Green Conferences
The 2026 Regional Grey to Green Conferences will explore the most recent green infrastructure science, economic valuation, asset management, public policy, technologies, and best practices in design, installation and maintenance. Our goal is to help inform the current policy debate by making the case for a rapid and significant increase in green infrastructure investment, a trend thatʼs now occurring worldwide.
2026 Grey to Green Conference Dates
June 11: Green Roof Installation and Maintenance Professional Training | Chicago, IL (Omni Ecosystems HQ)
June 12: Grey to Green Conference | Chicago, IL (Omni Ecosystems HQ)
September: Grey to Green Conference + Green Roof Installation and Maintenance Professional Training | Costa Mesa, CA
Dates are subject to change without notice
Please contact Eric Durnford, General Manager for any questions - edurnford@greenroofs.org.
Responding to a lack of formalized, independent hands-on installation and maintenance training around green roofing systems and a lack of qualified professionals, Green Roofs for Healthy Cities began the process of developing a new training opportunity to address those deficiencies in the form of the Green Roof Installation and Maintenance Professional (GRIMP) certification program.
This new certification involves a combination of hands-on and presentation style training. It introduces attendees to the basic skills and knowledge required to install green roofs and maintain them. This training provides participants with a grounding in this information, covering a variety of green roof systems, to provide green roof installers and maintenance professionals with the information, techniques, and training necessary to successfully install and maintain basic extensive green roofs.
2026 GRIMP Training Dates
May 22nd: Toronto GRIMP Training at Ginkgo Sustainability HQ (Etobicoke, ON)
June 11th: Chicago GRIMP Training at OMNI Ecosystems HQ
July (TBD): Denver GRIMP Training at Colorado State University - SPUR Campus
September 30th: New York City GRIMP Training at New York Green Roofs (Brooklyn, NY)
Living Architecture Academy
GRHC’s online training platform, offering self-paced online courses taught by industry experts.
Green Roof Professional Training and Accreditation Package
Gain expertise in green roofing with the GRP Training program, covering design, installation, and maintenance in a self-paced online format with lifetime access.
Biophilic Design: Science, Theory, Economics & Practice
Using case studies of best practice in planning and urban design, this course covers the main tenets of biophilia, as well as the 14 patterns of biophilic design as a tool.
Introduction to Green Walls: Systems, Design, and Approach
Explore sustainable site and land use strategies with David Yocca's introductory course on green walls. This online program is perfect for beginners in ecological planning.
Living Architecture Monitor
GRHC’s free, online, quarterly publication, now in its 24th year.
Highlights from the 2026 Spring Business Case Issue:
Sky-High Returns: The Economic and Social Case for Green Roof Amenity Space
Green roof amenity spaces increase property value, support well-being, and deliver environmental benefits. Explore research and case studies showing how rooftop green spaces create financial returns and enhance urban living in dense cities.
Roofing with Overburden as Protection from Hail, Fire, and Wind
Discover how green roofs and roofing overburden protect buildings from hail, fire, and extreme wind while extending roof lifespan. This article highlights how vegetated systems reduce maintenance costs, improve durability, and offer long-term value for building owners and potential benefits for insurers.
A Summary of Green Roof Cost Benefit Analyses From Around the World
Explore global green roof cost-benefit studies. Learn how factors like lifecycle costs, public benefits, and policy incentives shape the true economic value of green roofs.
Explore Our Ecosystem: Policies, Membership, Awards, and More
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GRHC is supported by its members. Become a corporate or individual member and gain access to resources, tools, a network of professionals, discounts, and more!
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Submit your projects and join us in celebrating exceptional projects, people, and organizations with the Green Roof & Wall Awards of Excellence.
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The Green Pages Green Roof and Wall Directory helps you quickly find key players in the green roof and wall industry as well as accredited Green Roof Professionals to help you with your projects.
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GRHC’s resources include Design Standards, a Guide to Green Roof and Wall Policy, the Green Roof Energy Calculator, Market Surveys, and more!
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