Our Story

A Greener Roof, Backed by Real Expertise

In an industry where most providers offer just the product, GreenGrid® stands apart. We deliver end-to-end solutions, from engineering and environmental consulting to system design, plant cultivation, and final installation. That comprehensive approach, combined with unmatched experience, makes GreenGrid® the most trusted modular green roof system in North America.

Launched in 2001 through a partnership with ABC Supply, GreenGrid® was developed by Weston Solutions, Inc. (Weston), a pioneer in sustainable solutions. What began as an exclusive license quickly grew into a dynamic collaboration, with Weston leading the development of new system iterations, patents, and performance enhancements. Ultimately, we acquired full ownership of the GreenGrid® intellectual property to better serve the growing market with smarter, more agile innovation, which is true to the spirit of our founder, Roy F. Weston.

Our team had firsthand experience with the complexities of traditional green roof systems as consultants on the landmark Chicago City Hall project. We saw the need for a simpler, more accessible solution; one that would eliminate challenges around construction schedules, rooftop logistics, waterproofing, and plant establishment. That vision became GreenGrid®: a modular system designed to solve real-world challenges with speed, safety, and efficiency.

Unlike traditional approaches, GreenGrid® modules are pre-grown in ideal nursery environments through partnerships with regional growers. This strategy supports local economies, reduces the environmental footprint, and results in faster, easier rooftop installations. Plants arrive healthy and fully rooted, ready for immediate enjoyment with minimal maintenance. No specialized installer training required. No long establishment periods. Just proven, practical green roof performance.

With thousands of successful projects across every U.S. region, GreenGrid® has redefined what a green roof system can be. We’ve delivered more than 6 million square feet of green roofs, including landmark “firsts” such as:

  • The first green roof for the U.S. EPA, followed by installations at nearly every EPA building nationwide
  • The first bus depot green roof for NYC Metro
  • The first green roof on Martha’s Vineyard
  • The first train station green roof in Chicago

GreenGrid® didn’t just make modular green roofs viable—it created a new standard for the industry. And over two decades later, we’re still setting that standard with every project.