A strong first half laid the foundations for the win.
Laois are promoted to Division 2A Of the National Camogie League after beating Roscommon in the league final in Kinnegad on Saturday.
The O'Moore County led by 8 at the break with Portlaoise women Susie Delaney scoring 5 points all from play.
Roscommon responded in the second half and outscored their opponents 1-3 to 0-3 but Pat Collier and Robert Jones team held on to a 14 points to 1-6 win.
Laois begin their Championship campaign on the 25th of May against Wicklow.
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