Built in 1974, the Mars Chocolat France factory (which also houses the head office of the Chocolat France division) has expanded to a surface area of 25,000 m². In 2016, the entire waterproofing of the site's roof was repaired, including a historic part that had never been renovated since its original construction. The construction site had to meet a number of highly technical challenges, in particular the presence of large amounts of roofing equipment and the need for the roof to be able to act as a fireguard.
Thanks to a combination of the load-bearing element, insulation and the BRoof (t3) classified Silver waterproofing coating, we were able to fulfil the technical requirements of the site. The specific reinforcement of the Silver two-layer system and the 20-year guarantee played a determining role in the choice of this solution.
The bitumen Silver bilayer coating system was installed on a thicker layer of insulation (50 mm), followed by 4 cm of gravel to protect the waterproofing and enable a M0 fire classification.
Contracting authority: Mars Chocolat France, Haguenau factory, France
General contractor: SECCr
Waterproofing companies: Etancheco
Period: January to July 2016
Products: Irex Profil; Paradiene 35 SR4 Silver and Paradiene 40.1 Silver
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