After the close of business Friday, PNC Financial Services Group will start the conversion of metro Atlanta branches it acquired from Flagstar Bank.

On Monday, all 27 metro area Flagstar locations will reopen bearing PNC’s flag, the Pittsburgh-based regional bank’s first foray into retail banking in metro Atlanta.

Metro Atlanta Flagstar customers have received mailers in recent weeks informing them of the change, and customers with checking accounts also have received new debit cards that can be activated Friday by phone or at a bank ATM. Flagstar debit cards will be deactivated around 1 p.m. Friday.

“We will have extra people on board during this transition period that will be able to answer questions for [customers],” said Richard Lewis, PNC Atlanta market manager of retail banking.

Branches will be closed on Saturday, he said, though staff will be on hand at each location to assist clients. PNC also is increasing staff for its customer service call centers.

The weekend conversion of former Flagstar locations is part of a much larger push by PNC into the metro market.

PNC’s announced $3.45 billion deal to buy the U.S. retail operations of RBC Bank is expected to close in March. That acquisition would make PNC the seventh-largest bank in metro Atlanta by deposits.

PNC Chairman and CEO James Rohr has hinted PNC could grow beyond the 82 locations it would inherit from Flagstar and RBC.

Lewis called the Flagstar addition “a great foothold” on the Atlanta market as PNC moves in.