Pitched roof renovation: Foamglas Tapered insulation covers Mondelēz Group's LU factory

FOAMGLAS cellular glass insulation^® TAPERED was recommended for its ability to achieve this slope. The plant was inaugurated in May 2025.

Established in many countries, Mondelēz International is an American multinational food company, particularly present in the biscuit and chocolate sectors, with iconic brands such as LU, Milka, Belin, etc. The Jussy factory, the historic production site of LU's Napolitain sponge cakes, is the only one in the world to produce this cake.

A technical constraint resolved

In the weeks following the tragedy, the Mondelēz group announced its intention to quickly restart operations. An ambitious reconstruction program aimed to make the Jussy plant more competitive and flexible, making it the American manufacturer's benchmark site in France.

The fire damaged two-thirds of the factory, but spared the structure. The steel deck roof had to incorporate a minimum slope of 3% to allow rainwater to drain away. The design office recommended FOAMGLAS cellular glass insulation.^® TAPERED with integrated slope to carry out the work. Thanks to this material, it was not necessary to reinforce or change the supporting structures to create a slope.

A quick construction site in the active factory

The construction site lasted 12 months on an occupied site. During the work, the production lines continued to operate thanks to the installation of scaffolding unique in Europe (the equivalent of two football pitches).

The FOAMGLAS expert teams^® worked closely with the design office to ensure optimal design and high-quality execution. They provided technical drawings and a detailed layout plan. This was to implement the FOAMGLAS integrated slope insulation solution.^® TAPERED is high quality and stands the test of time.

FOAMGLAS cellular glass insulating plates^® offer an exceptional combination of properties: thermal performance that does not deteriorate over time, mass vapor barrier, water vapor, water and air tightness, not forgetting fire resistance.

FOAMGLAS^® TAPERED: integrated slope insulation system

The easiest way to ensure proper water drainage is to add the slope directly into the insulation rather than into the building structure. FOAMGLAS is a high-performance, long-lasting insulation solution.^® TAPERED guarantees perfect water drainage and considerable time savings on site, while complying with current slope regulations. Its high compressive strength also prevents any deformation.