Cool Roof at Hyper E. Leclerc in Pleuven (29)

Thanks to the application of our cool roofing solutions to 300 m² of roofing, the E. Leclerc hypermarket in Pleuven significantly reduced the surface temperature and limited summer overheating on its mezzanine floor.

An exposed mezzanine, prone to overheating in summer

In summer 2020, the 300 m² technical mezzanine of the E. Leclerc hypermarket in Pleuven (Finistère), covered with a bituminous membrane, is particularly exposed to solar radiation. Surface temperature peaks in excess of 58°C degrade the building’s thermal performance and contribute to overheating inside.

Cool Roof France applied its thermo-reflective coating, followed by a comparative measurement campaign between painted and unpainted areas, over a period from late July to late August 2020.

Up to 33.6°C less at the roof surface

-33.6°C surface temperature

The readings show a maximum reduction of 33.6°C, and an average reduction of 17.9°C between the treated and untreated areas. The surface temperature peaked at 24.8°C in the painted zone, compared with 58.4°C in the control zone.

Grâce à nos dispositifs d'instrumentation, nous pouvons démontrer que le CoolRoof a des effets tangibles et considérables.
Grâce à nos dispositifs d'instrumentation, nous pouvons démontrer que le CoolRoof a des effets tangibles et considérables.

Continuous performance throughout the measurement period

Over the entire analysis period, the thermal profile of the roof remained stable in the CoolRoof zone, despite outside temperatures regularly exceeding 35°C.

Cool Roof a pu mesurer la stabilité du profil thermique du toit au cours du temps.
Cool Roof a pu mesurer la stabilité du profil thermique du toit au cours du temps.

Want to find out more or assess the potential of your roof?

Do you want to protect your buildings from overheating in summer? Contact us for a technical and thermal assessment tailored to your site.