On 30 June 2011, Catania confirmed the outright signing of Terracciano on a permanent basis from newly promoted Serie B side Nocerina. The player began the season as the fourth choice goalkeeper at the Sicilian club, behind Argentine international, Mariano Andújar, Italian veteran Andrea Campagnolo, and former Slovakian U-21 international, Tomáš Košický, and remained fourth choice following the new arrival of Juan Pablo Carrizo and the departure of Andújar. On 21 April 2012, because of the expulsion of Carrizo in the last match, he made his Serie A debut with the club. He remained third choice during the 2012–13 Serie A campaign, behind Andújar and Alberto Frison.