JMichael
New Member
We bought a dual sink vanity to replace the single sink vanity in our master bathroom. The supply lines and drains line up perfectly with the middle section of the vanity which is for the drawers, so everything needs to be moved. I'm not even going to bother with the drain lines and will have a professional take care of those, but I feel I can handle the supply lines if I can get a few questions resolved.
Some info on the setting. The current piping is 1/2" galvanized steel and is run through a crawlspace of a one-story house. The master bathroom shares a wall with the guest bathroom.
Here is an overhead diagram of the lines in the wall right now.
There is a 2x8" joist running parallel to the hot water line blocking where I need to run the supply lines for the left sink. The dots represent vertical pipes. The one furthest to the right is for the toilet in the adjacent bathroom.....the other two are for the current sink in the master bathroom.
It looks like it would be most feasible to unthread the pipe and elbow for the toilet supply line and extend off that line back to the left and branch off it for each of the new supply lines. For the hot water, I can take the vertical pipe and the short horizontal extension off and extend it. But to get back to the left sink, I'll need to have it do a u-turn. And, of course, all these new extended lines will need to cross over the current long horizontal runs of pipe which means one will be higher than the other and they will be close to each other. I don't know what best practices say about that.
The quick and dirty option would be to just run one hot water and one cold water supply line up behind the right sink of the vanity and branch off of it with flexible pipe on the outside of the wall and run that pipe behind the vanity where there is about 4" of space behind the back of the drawers to the left sink. But that's about 3' of flexible pipe and, again, I don't know if that is viable.
So any guidance on how to handle this situation would be appreciated.
Some info on the setting. The current piping is 1/2" galvanized steel and is run through a crawlspace of a one-story house. The master bathroom shares a wall with the guest bathroom.
Here is an overhead diagram of the lines in the wall right now.
There is a 2x8" joist running parallel to the hot water line blocking where I need to run the supply lines for the left sink. The dots represent vertical pipes. The one furthest to the right is for the toilet in the adjacent bathroom.....the other two are for the current sink in the master bathroom.
It looks like it would be most feasible to unthread the pipe and elbow for the toilet supply line and extend off that line back to the left and branch off it for each of the new supply lines. For the hot water, I can take the vertical pipe and the short horizontal extension off and extend it. But to get back to the left sink, I'll need to have it do a u-turn. And, of course, all these new extended lines will need to cross over the current long horizontal runs of pipe which means one will be higher than the other and they will be close to each other. I don't know what best practices say about that.
The quick and dirty option would be to just run one hot water and one cold water supply line up behind the right sink of the vanity and branch off of it with flexible pipe on the outside of the wall and run that pipe behind the vanity where there is about 4" of space behind the back of the drawers to the left sink. But that's about 3' of flexible pipe and, again, I don't know if that is viable.
So any guidance on how to handle this situation would be appreciated.