Eric Israel, Brandon Watt and Alex Tonge all scored in the second period in a span of just over 16 minutes to give the Colonials a road victory.
Earlier, Matthew Graham scored in the first period for a 1-0 RMU lead before Israel made it 2-0 at 4:13 of the second. Sacred Heart got on the board just 23 seconds later when Jason Cotton scored to make it a 2-1 game.
But later in the period, Watt and Tonge scored just 16 seconds apart as the Colonials pulled away.