Modular tray

A modular green roof system for a roof, the modular system comprising:

• a plurality of water impermeable trays for containing growth medium and vegetation, each tray including a pair of sidewalls, a lower end wall and an upper end wall extending between and interconnecting the ends of the sidewalls such that the walls define a perimeter of the tray,
• a bottom wall extending between and interconnecting one end of the sidewalls and the lower end wall, the bottom wall extending in a plane disposed at an angle with the respect to the longitudinal axis of the sidewalls,
• a plurality of platforms having a front edge and an opposed rear edge, the platforms extending between and interconnecting the sidewalls and disposed at an angle with respect to the longitudinal axis of the sidewalls, each of the platforms defines a plurality of recesses spaced longitudinally along the platform, wherein each of the recesses form a water retention cup;
• and
• a plurality of risers, each of the risers extending between the rear edge of a platform to the front edge of an adjacent platform,
• wherein the trays are releasably connected to one another resting on a roof in side-by-side relation so as to cover a predefined space on the roof to establish a green roof.

A method of constructing a modular green roof system for a roof, the method comprising the steps of:

• providing a plurality of modular trays, each tray including a pair of sidewalls, a lower end wall and an upper end wall extending between and interconnecting the ends of the sidewalls such that the walls define a perimeter of the tray,
• a bottom wall extending between and interconnecting one end of the sidewalls and the lower end wall, the bottom wall extending in a plane disposed at an angle with the respect to the longitudinal axis of the sidewalls,
• a plurality of platforms having a front edge and an opposed rear edge, the platforms extending between and interconnecting the sidewalls and disposed at an angle with respect to the longitudinal axis of the sidewalls, each of the platforms defines a plurality of recesses spaced longitudinally along the platform, wherein each of the recesses form a water retention cup;
• and
• a plurality of risers, each of the risers extending between the rear edge of a platform to the front edge of an adjacent platform;
• filling the trays with green roof materials;
• positioning the trays onto an area of the roof in adjacent side-by-side relation;
• and interconnecting the adjacent trays.