Now the Bowral Blues Senior team are off to the grand final and will be looking to quench their thirst for victory.

The Kookaburras will face Warragamba in the big dance after a gutsy preliminary final win over the Thirlmere Roosters, 18-16.

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Head coach of the Bowral Senior team Mark Williams is extremely proud of how his team faced adversity this season.

"It's been a great year," Williams said.

"But this has been one of the most injury plagued season I've seen in my 25 years with the club. We had weeks where we were fielding 12 to 14 players. But we hung in there and that toughness has got us to where we are now, in the grand final.

"I wanted the team to continually improve and making the grand final has proved we have."

Several surrounding Southern Highlands league teams have had to withdraw from their competitive bracket, but the mighty blues hung in there.

"We just kept running out onto the field each week," Williams said.

"It's a real credit and testament to the club. Everyone has bought into the culture here. Anyone who was fit and able to play showed up and now we're reaping the rewards."

The senior side returned to Bowral in 2015. From having no side, to players fighting hard for the guernsey, the culture at the club has continually improved.

"The committee and the coaching staff wanted to make the club a social place for people," Williams said.

"Nobody at the club is looking for mass payments. Everyone turns up because they enjoy playing for the club and the culture."

Facing the Wombats in the final will be a tough match, but the coach knows how the team can get the win.

"Playing Warragamba previously, they've had a few big forwards that have set the tone for them," Williams said.

"We need to win the middle of the field defensively. If we can slow their middle down, that'll take them out of the game a little bit. When we're attacking, we'll need to hit the edges.

"We're not an overly big side. We won't be going down the middle, we'll need to use the ball."

The drought between finals has been so long that when the Blues last played in a final George Michael's Faith was the number one song of the year. Like the title of that hit tune, members at the club have that in this team.

"Talking to some of the old boys, the last grand final the seniors played in was 1988," Williams said.

"The last win for the seniors was 1984. It's been a bit if a dry patch. This is a really big positive for the club and a major step in the right direction.

"It'll be really special for all the people involved with the club who haven't seen success for a long time, but continue to show up and put in the hard yards."

The Bowral Blues will face Warragamba in the grand final Saturday, September 14 at Campbelltown Stadium. The game begins at 4:45pm.