Work began on the swimming pool changing rooms at Better, Fulwood Leisure Centre in September and was only meant to last 10 weeks.
Now general manager has emailed members of the leisure centre to notify them of the delay.
Jolene Swann said: “We are sorry to advise that the re-opening of the improved swimming pool changing rooms at Better, Fulwood Leisure Centre has been delayed due to an unexpected hold up during the replacement of the floor.
“We expect that the swimming pool changing rooms will now re-open on Monday, January 14, 2019.
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“The health and fitness changing rooms are open as usual, and Better Swim members can use Better, West View Leisure Centre free of charge until the swimming pool changing rooms reopen.
“We apologise for any inconvenience that this may cause.”