when the dishwasher is in use it is letting out lots of steam , which is making the work top above start to expand,and the steam gets into the cupboard under the sink and runs down the inside of the door, i have looked at the seal around the door and elsewhere but cant see what is differant about it.
in the top roof inside the dishwaser, there is a rubber disk that in time will rot away, all i did was cover the hole from outside with flash banding used for sealing roofs and it worked fine. Hope this helps