Roofs transformed, results measured.

On the Airbus Operations site in Marignane (Bouches-du-Rhône), several workshop and office buildings covered with dark bitumen membranes suffered every summer from overheated volumes, hard-working air conditioning and waterproofing exposed to violent thermal cycles. From April to June 2026, Hélios treated three buildings: about 5,900 m² of membrane, on an aerospace site in full operation.

The application followed the site’s prevention plan, with badges and work-at-height certificates for every applicator, marked-off zones, protection of sensitive equipment (air-handling units, rooflights, cabling) and phasing building by building. Drums and pumps stayed on the ground; only hoses went up. the largest building alone, 3,100 m², was treated in one week.

At reception on 19 June 2026, the infrared reading gave 57.8 °C on the untreated control zone against 28.6 °C on the treated zone, at the same time of day: −29 °C on the surface. Polycarbonate rooflights received the PrimaTherm® LT lacquer to cut solar gains through the skylights while keeping daylight.

Full case study: Airbus Marignane.