Have you had the wettened floor and underneath checked to make sure it's dry enough to lay a floor directly on top? In a different place, my washing machine flooded the floor to 1 or 2" deep, which I just mopped up. It turned out that water had gone down the edges and caused dry rot, needing the joists and floorboards to be replaced and the underneath chemically fumigated and new air vents installed. Luckily I could prove a flood had occurred so my insurance cover could not be negated as a "gradually operating cause" (i.e. constant drip that was excluded for some reason on my policy). Hopefully you'll have no such problem.