Tyler Digby and Tyler Garrison had a pair of goals each for Vancouver (3-3). Cliff Smith, Curtis Hodgson, Ilija Gajic, Corey Small and Joel McCready rounded out the attack.
Shawn Evans and Curtis Dickson each struck twice for the Roughnecks (0-6). Garrett McIntosh, Mike Carnegie, Dane Dobbie, Matthew Dinsdale and Jeff Shattler supplied the rest of the offence.
Tyler Richards made 37 saves for the win while Frankie Scigliano also stopped 37 shots in 57:30. Mike Poulin played 2:29 and made one save.
The Stealth went 4 for 14 with the man advantage while Calgary converted four times on nine opportunities.