Test the floor as a layered system
A dry upper surface may sit over wet underlayment, adhesive or subfloor. Readings at several points help distinguish a contained spill from migration beneath the finish. When water reaches cabinetry, technicians check base panels and lower wall material without assuming the whole run needs removal.
The room below matters when the appliance sits above another level. Water can follow a supply penetration or floor opening into insulation and a ceiling cavity. That lower space becomes part of the map even if dripping has stopped.
