Green roof on Mirail university restaurant

Vegetal i.D. built 2 green roofs on a university restaurant. The R+1 roof was been made watertight on a concrete medium (reverse waterproofing) and the R+2 roof was made watertight on a steel system. The i.D. MAT sedum mat was installed on both roofs.

The key-points of the project:

  • The green roof on a steel medium (R+2) has significant stresses from load and lifting.
  • The green roof on a concrete medium with reverse insulation: the weight of the planted system must be added to the ballasting provided by the insulator.
  • The planted surfaces are narrow and delicate to water. Special watering equipment must be used: This installation used rectangular nozzle spray irrigation.
  • Presence of solar panels on one of the planted surfaces: selection of sedums able to support semi-shaded exposure, and special watering to irrigate the concealed area well.

Additional Info

  • Surface (sq m): 1130
  • City: Toulouse (31)
  • Year completed: 2012
  • Roof medium: concrete and steel
  • Roof pitch (%): 0 to 3
  • Plant cover: i.D. SEDUM
  • Irrigation: Aspersion

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As a green roof expert, Vegetal i.D. is a member of the following organisations:

adivet association des toitures végétalesGreen Roofs for healthy city associationPole Dream, Pole de compétitivité eaux et milieux - région Centre


Are you looking for a company to provide, install or maintain a green roof ? As a green roof expert, Vegetal i.D. manufactures and supplies green roof systems. There is a green solution for all your projects: flat roofs, very steeply sloping roofs or green urban landscapes.
Vegetal i.D. green roof systems are :
HYDROPACK® (the all-in-one green roof tray),  i.D. MAT (the plant mat), and STOCK&FLOW® (the green roof and stormwater solution).

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