Hi, Our washer is down stairs and when it drains it comes up in the down stairs shower. There is no clog we have it all cleaned out. But it still dose it. This is not a new problem it has done this for a long time. But we want to fix up the bath room and would like to be able to use the shower. We have no idea what to do. When we had the drains all cleaned out the guys that did it had no ideas ether.