400 Feet High Above Seattle

High-Rise Green Roof atop of 4TH&Madison in Seattle, WA. This layout represents the maximum extent of the green roof, constrained by the significant lift forces encountered near the edges.

Diadem USA is proud to announce the successful completion of a stunning 2,900-square-foot green roof installation atop the 37th floor of the 4th & Madison Tower in Seattle. In collaboration with Hines, ZGF Architects, Schuchart, and Camden Gardens, this vegetated rooftop reaches an impressive elevation of over 400 feet, integrating sustainability with urban design. The project, completed in 2022, supports urban agriculture and biodiversity, hosting beehives and enhancing the city skyline. Feedback from the real estate community has been overwhelmingly positive, reinforcing Diadem’s reputation for excellence in green roof solutions. For more details, reach out to Diadem USA.