i had this last year, 3 cleans and woman phones saying don't clean no more as windows are full of water,
i had a look , and they were,
i said to her your windows must be faulty, it should be a sealed unit, it should not get in.
later that day i plucked a no out of yellow pages, double glazed fitters, and he said the same, the unit is faulty.
he said no way should water get in, and he should know, he makes them. john.