A green roof can wholly transform a space! The ability to retrofit for a green roof depends upon the structure’s ability to bear the additional weight load.  A qualified structural engineer should ALWAYS be consulted to determine safety prior to installation of LiveRoof modules or RoofStone pavers.
The LiveRoof Lite system was developed to expand the opportunities for green roofs on existing buildings.  With 2.5″ of soil, the system’s saturated weight is 15-17 lbs / sq ft.