Parking in paulo Coello street,
Alicante

This project reflects one of our first works in the field of green roofs, specifically two Fitum type roofs located on Paulo Coello street in Alicante. These roofs were installed on the upper slab of a subway parking lot, thus being located at ground level, which means that, although they function as green roofs, they are at street level and are fully accessible.

The Fitum roofing system is relatively simple and comprises several components essential to its proper functioning and durability. The structure starts with a waterproof layer that ensures protection against water infiltration. On top of this, a water-retaining layer is added to help maintain the moisture necessary for vegetation growth. This is followed by a filter layer that prevents the passage of fine particles that could clog the drainage system. The substrate, which varies according to the type of vegetation to be planted, is placed on top of these layers. Finally, the cover is completed with the planting of the selected vegetation.
In this particular case, the base layers were prepared by the construction company, while our team was in charge of increasing the thickness of the substrate and the planting. A substrate specially formulated to support succulent vegetation was used. Following the technical specifications, 50 plants per square meter were planted. To do this, the roof was divided into one-meter wide sections, using ropes and marked planks to form a dense grid of 7×7 plants per square meter, thus ensuring an even and efficient distribution of the plants.
In addition, the design focused on forming irregular groupings of plants, creating visually appealing patterns through both the arrangement and the colors and shapes of the succulent plants. This design not only serves an aesthetic function, but also contributes to the biodiversity and environmental benefit of the roof. The placement of the volcanic gravel was done simultaneously with the planting, to protect the substrate and the roots of the plants, in addition to providing an aesthetic and functional finish to the project.

The following plants were selected:

  • Adromichus cristatus

  • Adromichus cristatus var. schoenlandii

  • Aeonium ballerina

  • Aeonium keweionium

  • Aloe aristata

  • Aloe striata

  • Crassula marnieriana

  • Crassula sp.

  • Echeveria «Black Prince«

  • Echeveria «Perla de Nuremberg»

  • Echeveria pulidonis

  • Faucaria sp.

  • Graptoveria «Royal Flush»

  • Kalanchoe tormentosa

  • Sedeveria letizia

The end result is a vegetation cover that not only improves the aesthetics of the building, but also contributes to urban sustainability, providing a habitat for various species and helping to improve air quality and reduce the heat island effect in the city.

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