Skipper Simon Mannering says the rampant Warriors must lift their game for a tough run toward the NRL finals despite thumping Canberra 29-10 on Sunday.

The Warriors romped away, scoring 21 unanswered second half points in a 29-10 victory at Auckland's Mt Smart Stadium, stretching their winning streak to four matches and consolidating their hold on sixth spot on the ladder.

They scored six tries to two against the lowly-ranked Raiders and have now scored 25 tries in the past four rounds.

But they know the intensity will lift another level over the next five weeks, when all their opponents - starting with Brisbane at Suncorp Stadium next Saturday night - are either in or just outside the top eight.

Mannering said it was always a big occasion to be playing Broncos, the Warriors' first NRL opponents back in 1995, but the important thing was for the team to continue to build.

"Today isn't going to be good enough for next week or the weeks after that," he said.

"You can't worry about who we're playing too much as long as we're improving our own game."

Mannering also doused concern over a knee injury that saw him substituted late in the game, saying he had got a bump and it was "nothing too bad".

The Raiders went into the match looking to retain much-needed momentum gained when they upset premiers St George Illawarra six days earlier, but their hopes were certainly extinguished as they dropped to 14th.

Giant winger Manu Vatuvei opened the scoring with his fourth try in two matches and then made the break that set up centre Shaun Berrigan for the Warriors' second touchdown.

But replies by winger Daniel Vidot and centre Jarrod Croker, who converted his own effort, put the visitors in front 10-8 just out from halftime.

From there, the Warriors took over as they continued their scoring spree of recent weeks.

Prop Sam Rapira got his first try of the season, while centre Joel Moon, five-eighth James Maloney and winger Bill Tupou also chimed in, with Maloney adding a late field goal for good measure.

Canberra coach David Furner said his players would head to Newcastle next weekend with the same challenge as before they arrived in Auckland, which was to win every game that remained.

"We need to concentrate on that game first, rather than looking at this is what needs to be done, mathematically, or this team needs to beat whoever," he said.

"I'll certainly not be wasting my time on that. I'll be just focussing on the next game."

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