If the subfloor isn't damaged and the affected area dries out in 24 to 48 hours, you may be able to repair the damaged floor. Before attempting a repair, make sure that the floor is completely dry. Use wet vacuums to clean large pools of water and install fans and dehumidifiers to dry out the rest of the moisture. Simply screw or nail boards that appear to be slightly raised back into place, but remove water damaged floorboards.
Using a saw, cut out damaged floorboards. Lift the damaged section and remove it with a crowbar. Then, nail the new boards to the floor. Before staining, sand the old boards and the replacement ones to match.
Apply a polyurethane dye and finish. Water-damaged laminate floors can be repaired by removing damaged boards and replacing them with new ones. It is important to identify the water source and dry the subsoil if necessary to avoid having to replace them again in the near future.
