A modular greenroof is made up of a series of trays, which hold engineered soil and plants. The greenroof can go directly on existing roofs, assuming necessary support exists, without retrofit and the associated costs. It provides the important elements associated with green roofs, including storm water retention, insulation, and membrance protection.

Tournesol GRT3 green roof trays are made of extremely durable HDPE, with 60% recycled content. Unlike injection molded trays, the material resists cracking an splitting. They are available for either 4” extensive and 8” intensive applications. Raised drain holes at corners and along channels allow for 3/4” of storm water retention after rainfall.