During the construction of this fourth greenhouse we had no less challenges than with the three others. With a size of 164 000 sqf, it is now the largest commercial rooftop greenhouse in the world. FDA Construction has been involved from the conception phase until the delivery of the project. The timeline was the same as a four times smaller greenhouse (Lufa #2). The construction started under very bad weather conditions, pushing our team to overpass themselves. Covid-19 came over to get things more complicated and yet we delivered an energy efficient rooftop greenhouse in 7 months. And on budget.