Laminated wood flooring is susceptible to damage from moisture. A spill introduces moisture to the wood causing swelling that can lead to a warped board or a bubble. If the swelling causes the piece of flooring to de-laminate, separate into the individual wood pieces, it will need to be replaced. Cutting the damaged board out of the floor allows for replacement without tearing up the entire floor. Do-it-yourselfers with basic woodworking skills and tools can accomplish the task.
Mark out the damaged board or boards. The process replaces entire boards, not portions of boards.
Drill holes at the four corners around the damaged areas with a 1/2 inch or larger drill bit. Keep the holes about 1 inch from the seams between the damaged board or boards and the good flooring.
Cut between the holes with a router set to the same depth as the thickness of the laminate flooring. This effectively cuts the damaged piece out of the floor. Remove the damaged floor segments.
Cut the remaining edges of the board perpendicular to the good pieces of laminate flooring without cutting into the good flooring. Remove edges of the damaged board.
Cut a new piece of flooring to length to fit the open space in the floor. Cut the tongue off of this piece of flooring. These cuts can be made with a circular saw but a table saw would work better.
Place wood glue along the exposed tongue of the flooring remaining on the floor. Apply wood glue to the edge of the new board where the tongue had been removed. Push the groove of the new piece of flooring over the tongue. Push the board down into the opening in the floor. Do not glue the new floor board to the floor, only to other laminated floor boards.