Lightweight intensive green roof

THIS SYSTEM IS USED ON ROOFS, TERRACES AND ROOF COVERAGE FOR UNDERGROUND SPACES. THE LAWN SYSTEM IS IMPROVED AND COMPLEMENTED BY THE SHRUB COMPONENT, ALLOWING A MORE VARIED COMPOSITION OF THE GARDEN WITH WOODY PLANTS WHOSE VOLUMES, SHAPES AND COLORS DECORATE THE GARDEN IN THE TRUE SENSE OF THE TERM, WITHOUT DETRACTING FROM ITS USABILITY. IT IS SUITABLE FOR BOTH PRIVATE AND PUBLIC SURFACES OF ANY SIZE. IN THIS CASE, THE GREEN ROOF SYSTEM SERVES THE FOLLOWING FUNCTIONS:

RECREATE GARDENS OF REFINED AESTHETICS EVEN IN THE MOST DENSELY URBANIZED AREAS.
MITIGATE THE HIGH TEMPERATURES OF BOTH THE SPACES BELOW THE CANOPY AND THE ADJACENT OUTDOOR ENVIRONMENT DUE TO THE SUBSTRATE THICKNESS AND INTENSE EVAPOTRANSPIRATION.
CONTRIBUTE TO THE STORAGE PROCESS IN THE CASE OF INTENSE RAINFALL AND PROMOTE THE RESTORATION OF THE WATER CYCLE.
LOCALLY PROMOTE AIR PURIFICATION.
EXTEND WATERPROOFING LIFESPAN.

The Harpo verdepensile light intensive system adheres to the UNI 11235-2015 standard, guaranteeing and exceeding the minimum characteristics for both all individual elements and system performance.

Thanks to a variable substrate thickness, the light intensive system allows for mixed vegetation that includes lawn and shrubs, bushes and small trees.

The main features of the system are as follows:

Versatile and lightweight: usually the thickness of the system varies from 20 to 30 cm for both the BAS and RIC lines. In both cases, the maximum retention weight of the lower thickness system starts from 230 kg/sqm.
Aesthetic value and usability: a light intensive is populated with lawn grass and low-growing bushes. There is total usability given by the walkable lawn. The very high permeability of the substrate allows almost immediate access even after rainfall events. No water stagnation or mud is formed.
Management costs: the level of maintenance required is mainly determined by the periodic care and cutting of the lawn, which can also be done with automatic lawn mowers. Occasional fertilization interventions are recommended. Bushes and shrubs, on the other hand, require less frequent but more targeted interventions such as occasional pruning. Indicatively, the system requires 4 to 9 days/year for a 1,000 sq m cover.
Irrigation: vegetation requires a moist substrate and therefore a calibrated irrigation system should be designed for lawn and sedum separately.
Implementation costs: this solution is economical on average as far as the system is concerned. The total cost is in function of the choice of plants that are transplanted from pots and the quality of the lawn.
Thermal resistance: the system contributes to energy savings with a thermal resistance that varies depending on the water content but is not less than 0.48 (m2 * K)/W, with substrate thickness 15 cm, according to CNR report for the BAS system.
Runoff coefficient: variable depending on substrate thickness, specific values can be provided upon request based on studies conducted with the University of Genoa or specific tests carried by our laboratory.