Wrexham secured a valuable away point that lifts them off the foot of League Two on goal difference.
Rochdale dominated possession but never looked likely to break the deadlock until Adam Le Fondre hit the woodwork midway through the second period.
Wrexham goalkeeper Anthony Williams then denied Callum Higginbotham and Glenn Murray late on.
Wrexham's best effort came from a 25-yard drive from Matty Done which goalkeeper Sam Russell pushed wide.
Rochdale: Russell, McEvilly (Prendergast 71), Ramsden, Holness, Stanton, Kennedy, Higginbotham, Jones, Perkins (Doolan 63), Rundle (Murray 59), Le Fondre.
Subs Not Used: Spencer, McArdle.
Booked: Higginbotham, Murray.
Wrexham: Anthony Williams, Hope, Steve Evans, Pejic, Baynes, Roberts, Llewellyn, Taylor, Aiston, Proctor (Marc Williams 70), Done (Johnson 81).
Subs Not Used: Michael Jones, Garrett, Eifion Williams.
Booked: Taylor, Baynes.
Att: 2,808
Ref: Mark Haywood (W Yorkshire).
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