The former utility room in our home had an oil-fired water heater
which, over the years, leaked a good bit of oil. We have now emptied
the room and plan to turn it into a food pantry, but the oil stains
(and odor) are seemingly permanently set into the concrete floor. We
have tried a variety of methods to remove the stain and smell, but
nothing has worked and the oil smell is _very_
The current floor is basically a concrete subfloor - currently you
step down into the room (the concrete is about 6" below the threshold
of the door into the room).
I am considering pouring a new layer of concrete - maybe 2-4" - and
allowing it to set, then redoing the room from there. My only concern
is that the smell might still find its way into the room, which would
then be even more difficult to solve.
Does this sound like a good solution to the problem, to just cover it