Adam studied first with his father, then with his elder brother Lambert, at the Académie royale de peinture et de sculpture (Royal Academy of Painting and Sculpture). He failed to obtain the prix de Rome, but did receive funding to travel to Italy. Along the way, he stopped to work on the ornamental façade of the Château de la Mosson at Juvignac, near Montpellier, spending 18 months on the project. He finally arrived in Rome in 1726. His brother introduced him to the cardinal Melchior de Polignac, for whom he restored a number of ancient marbles.
