Let's see....
The 2nd floor bathroom is directly above the 1st floor bath. The pipe you asked about--yes, that is the kitchen sink drain. The sink is right on the other side of the wall from the bathroom, but will be moved across the room in an eventual kitchen remodel. The washer doesn't drain into the stack. It sort of goes right into the floor, near the stack. I suppose it must connect somewhere to the sewer line. I can only tell you that we have never had any issues with it. The washer is located in the utility room (same room that the new hallway/entry space will be taken from, but a different spot in the room). That's all we have.
As for the leak, I know exactly where it is coming from. It is the tub faucet.
Isn't replacing the stack big bucks? Or is that only if you have to pay for the labor?
My husband and I talked it over last night when we realized that the tub was leaking again. I always hoped to get the bathroom done inside of 2 weeks....you know, like they do on t.v.
But we are just going to have to cut off the water supply to the tub for now, and work on demoing that area, then framing the new hallway/entry. At that point, we'll have to demo everything else, fix the plumbing, and then finish the room as we are able. It's not so much time (though spring is our busiest time because of kids' schedules), because I can do a lot of the work during the day. It's more the money. And honestly, the more we have to do, the longer it will take. I am okay with that, I guess, since my dad taught me to do the important things right. However, depending on how much this will cost, I don't know how soon I will be able to get started. I finance most of our home improvement projects by plasma donation. It's slow, but steady. Can anyone give me a ballpark for the stack, pipes, etc. that I will need? I do mean ballpark. Not looking for guarantees....just a target to shoot at so that I can have an idea when I can get started. Who knows? It's always possible that we will get a little tax refund......