Hansw
New Member
Sewer smell in the laundry closet. I was expecting that the trap was missing, and after I opened up the wall, found out that indeed there is no P-Trap. There is also no visible venting. House is from the 1970s.
As you can see from photo.jpg there is not a lot of space. So I've come up with a couple of solutions, but would like to hear comments and suggestions.
1. Install P-trap. Keep the top part of the drain in the same location. Will need to go through the stud / remove stud on the left, to add some horizontal pipe to make it a P-trap. Then bend 180 degrees to come back, and let the waist go down into the sewer. (photo1.jpg shows part of that). Not sure how to install venting.
2. Install 2nd washing machine outletbox, to the left of the existing one. I think I've 9 inches to the left of the stud. With the drain in the middle, the trap would not have any horizontal pipe (s-trap...). Maybe I can route the pipe to the end of the wall, so I would have 4 inches of horizontal pipe. Disadvantage: I need to go through the stud.
3. Install drain completely to the left, in the corner, on the outside of the wall. In that case I have space for 4 inches of horizontal piping to make it a P-trap. Advantage: I would not need to go through the stud. Cheater valve could be installed under the existing box. Disadvantage: space is narrow, and washing machine could bang against the pipe and break the pipe.
4. Install drain completely to the left, in the corner, inside the wall. In that case I have space for 4 inches of horizontal piping to make it a P-trap. Would have to go through the stud, and would have to build my own box inside the wall. Cheater valve could be installed under the existing box.
I'm open to any comments and suggestions. Thanks for all your help!
As you can see from photo.jpg there is not a lot of space. So I've come up with a couple of solutions, but would like to hear comments and suggestions.
1. Install P-trap. Keep the top part of the drain in the same location. Will need to go through the stud / remove stud on the left, to add some horizontal pipe to make it a P-trap. Then bend 180 degrees to come back, and let the waist go down into the sewer. (photo1.jpg shows part of that). Not sure how to install venting.
2. Install 2nd washing machine outletbox, to the left of the existing one. I think I've 9 inches to the left of the stud. With the drain in the middle, the trap would not have any horizontal pipe (s-trap...). Maybe I can route the pipe to the end of the wall, so I would have 4 inches of horizontal pipe. Disadvantage: I need to go through the stud.
3. Install drain completely to the left, in the corner, on the outside of the wall. In that case I have space for 4 inches of horizontal piping to make it a P-trap. Advantage: I would not need to go through the stud. Cheater valve could be installed under the existing box. Disadvantage: space is narrow, and washing machine could bang against the pipe and break the pipe.
4. Install drain completely to the left, in the corner, inside the wall. In that case I have space for 4 inches of horizontal piping to make it a P-trap. Would have to go through the stud, and would have to build my own box inside the wall. Cheater valve could be installed under the existing box.
I'm open to any comments and suggestions. Thanks for all your help!
Last edited: