nole01
New Member
Hey all - I am replacing my vanities and needed to have the valves moved...when we removed the drywall, we saw the attached (photo attached) behind the drywall. The straight pipe out led to the p-trap. Is this a problem? As you can see, it's an outside wall/concrete. I think that originally there was a shorter vanity that was replaced with a taller (35") one and this was the fix for it. Am I going to have siphoning? sewage issue?