Use a prybar and mallet to remove crown molding from underneath the countertop and the floor around the island. Clean up any debris created from removal.
Cut the wood to size according to kitchen island measurements.
Nail the wood pieces into place along the bottom perimeter of the kitchen island, then nail the wood pieces along the underside of the island.
Measure the distance between the floorboard and countertop board. Cut (4) 1x2’s to size. Nail 1x2’s in between the floorboard and the counter board.
Use wood filler to fill in the holes made by the nailer and allow the putty to dry.
Use a sander to smooth out the filler and wood once the filler is dry.
Apply caulk around both the bottom perimeter of the island and the underside of the countertop where the wood and countertop meet.
Paint the island the desired color in between the wood pieces.