Three penalty tries and two second half efforts from backs Ciaran Gaffney and Conor McKeon helped Ireland secure top spot in Pool B, with France slipping up against Wales in their final game.
Mike Ruddock's young charges now have four days to prepare for a mouth-watering semi-final clash with defending champions England, who were run close by Argentina (17-16) earlier today.
Sunday's JWC semi-finals - England v Ireland (kick-off 5.05pm local time/6.05am Irish time) and South Africa v New Zealand - will be broadcast live on TG4 and Sky Sports 1 HD.
To listen to a post-match interview with Mike Ruddock, click here.
Related Links -
Bonus Point Win Seals Semi-Final Place For Ireland U-20s
England Confirmed As Semi-Final Opponents
IRB Junior World Championship - Ireland U-20 Squad