Description
Don’t have a roof or greenhouse in your vegetable garden?
In this case, it often becomes difficult to connect an existing roof to a water tank.
Rosiluv was designed specifically to address this constraint.
It allows rainwater to be collected and stored without relying on a building.
Rosiluv functions as a 4.3 m² stand-alone funnel roof, designed to attach directly
to an IBC-type water tank (1000 liters).
This makes rainwater collection simple and efficient, even without a roof.
Its four petals capture rainwater over a large surface area,
then naturally direct it by gravity to the reservoir.
In this way, water is stored without pumps, energy, or heavy infrastructure.
In addition, Rosiluv can also be installed on flat roofs,
where it blends in with the building’s architecture while ensuring
decentralized rainwater harvesting.
Finally, depending on the region, financial assistance may be available to support
the installation of rainwater harvesting systems.
If you live in the Île-de-France region, you can find out about the schemes available
via the following platform: adaptaville.fr
Installation on a flat roof
ROSILUV – Rainwater collector for building flat roofs
We offer to install ROSILUV on the roof terrace of your building.
On urban buildings, rainwater is currently mostly drained away unused into the sewer system. ROSILUV reverses this logic: water that falls on the roof becomes a local resource, temporarily stored and reused on site, at the building level.
Smart water management from the roof
ROSILUV modules are buffer tanks that intercept rainwater before it is discharged into the sewer system. The collected water is stored on the roof and then redistributed by gravity to lower levels, without the use of a pump and without consuming electricity.
This gravitational pressure allows:
- watering balconies, terraces, and urban vegetable gardens,
- the water supply to toilet flushes,
- non-potable domestic use (washing machine),
- cleaning exteriors and vehicles,
- the creation of a reserve of water that can be used in the event of a fire.
ROSILUV thus acts as a supplement to the public drinking water network, reducing the consumption of treated water for uses that do not require drinking water quality.
An essential role in urban regulation
Beyond promoting water conservation, ROSILUV plays a role in regulating water flow.
In the event of heavy rain or storms, the reservoirs temporarily absorb the surplus, limiting the peaks in flow sent to the sewerage networks and wastewater treatment plants.
This buffer function helps reduce the risk of overflow, a major issue in dense urban centers.
An architectural and climate-friendly response
ROSILUV is not limited to a technical function: it becomes an architectural element.
By creating a recognizable silhouette against the skyline, ROSILUV collectors provide buildings with a useful and functional crowning feature that is visible and recognizable from a distance. They signal that a building is committed to sustainable resource management.
Thermal improvement and urban comfort
ROSILUV modules actively contribute to reducing the urban heat island effect:
- increase in roof albedo,
- reflection of solar radiation,
- limitation of heat accumulation in bituminous roofs.
The collectors function like a sunshade, reducing overheating of the building.
The water tanks are also protected from direct sunlight under the collection caps, limiting the heating of the stored water.
A modular, adaptable, and scalable system
ROSILUV modules are fully modular.
They can be assembled together in both dimensions to adapt to the surface area and geometry of each roof terrace, with no theoretical limit on capacity.
The device can be equipped with:
- a simple overflow system,
- an automatic antifreeze purge, ensuring the safety of the network in the event of severe frosts.
Technical characteristics
Features
- Gravity-fed rainwater harvesting
- Gravity-fed rainwater harvesting
- Stainless steel fasteners
- 500-liter IBC tank
- Wind stabilization using gabions
- Connection of tanks using Ø32 polyethylene piping
Configuration
- Autonomous collection device
- Gravity water pressure
- Connection of IBCs via polyethylene network
- Overflow by spillage
- Automatic antifreeze purge (optional)
Dedicated network
- Creation of a building-specific EP network
- Gravity-fed rainwater distribution from the roof terrace
Installation requirements
- Waterproof flat roofToiture-terrasse étanche
- Support structure compatible with an average load of 150 kg/m²
(1 ROSILUV module + full IBC = approx. 600 kg distributed over 4 m²)
ROSILUV on a rooftop terrace
A new lightweight infrastructure for urban ecological architecture:
Collect, store, regulate, and reuse water from the roof.
Rosiluv is distributed in the form of a do-it-yourself kit, with 12 elements to assemble, bolts and assembly instructions.
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