Michael Koehler
New Member
Hey all - I'm new here, so thanks for the help in advance.
The project, in a nutshell, is to completely renovate the bathroom - and in the process, replace the single vanity with a double vanity. A few basic questions on the plumbing (attached picture):
Q #1: It appears as though two copper supply lines enter through the concrete slab for both hot and cold water. I didn't measure, but I assume those are 3/4" lines coming out of the slab and (I measured) 1/2" copper line coming out of the reducing tee. Are those both truly supply lines or would you expect the branch to go back into the slab and provide water to, say, the shower?
Given the orientation of the supply/vent lines, I'll have to run plumbing that first supplies the right sink then the left. The current plan for the supply lines is to run 1/2" PEX and install a tee in the wall before the shutoff valves.
Q #2: We haven't selected appliances yet, but any key concerns with using 1/2" PEX in that manner (supplying two sinks)? I figure that with the eco-friendly appliances these days, that should be sufficient, but looking to y'all for any experience that you may have.
A bit of a tougher question with the waste/vent lines.
Q #3: I was planning to run the waste line across to both sinks (e.g. effectively extend the line in the direction that it's currently heading). But in order to have proper ventilation, I was going to run vertically in the stud bay, then back to the right to connect back into the vent line. Think of a large rectangle, with one p-trap coming from the middle of the bottom, horizontal run and one p-trap coming from the bottom left corner. Any issues with that setup?
In my mind, when I opened the wall, I expected the vent line and supply lines to be one stud bay over and I was going to run a double sanitary tee (no additional vent lines required) and tee off the supply lines, but alas...
Thanks all!
The project, in a nutshell, is to completely renovate the bathroom - and in the process, replace the single vanity with a double vanity. A few basic questions on the plumbing (attached picture):
Q #1: It appears as though two copper supply lines enter through the concrete slab for both hot and cold water. I didn't measure, but I assume those are 3/4" lines coming out of the slab and (I measured) 1/2" copper line coming out of the reducing tee. Are those both truly supply lines or would you expect the branch to go back into the slab and provide water to, say, the shower?
Given the orientation of the supply/vent lines, I'll have to run plumbing that first supplies the right sink then the left. The current plan for the supply lines is to run 1/2" PEX and install a tee in the wall before the shutoff valves.
Q #2: We haven't selected appliances yet, but any key concerns with using 1/2" PEX in that manner (supplying two sinks)? I figure that with the eco-friendly appliances these days, that should be sufficient, but looking to y'all for any experience that you may have.
A bit of a tougher question with the waste/vent lines.
Q #3: I was planning to run the waste line across to both sinks (e.g. effectively extend the line in the direction that it's currently heading). But in order to have proper ventilation, I was going to run vertically in the stud bay, then back to the right to connect back into the vent line. Think of a large rectangle, with one p-trap coming from the middle of the bottom, horizontal run and one p-trap coming from the bottom left corner. Any issues with that setup?
In my mind, when I opened the wall, I expected the vent line and supply lines to be one stud bay over and I was going to run a double sanitary tee (no additional vent lines required) and tee off the supply lines, but alas...
Thanks all!