Condensation under bathroom sink

[losttree]

Hi all,
We own an 07 Greyhawk Sport and sometimes have trouble with water under our sink in the bathroom. I've taken the drain line apart and reassembled it looking for a leak and watched for leaks with the water running as well and never found a leak. I have noticed the hot water faucet valve seems to sweat a lot especially when we run the ac and at this point I'm working on the assumption that sweating is our problem. Has anyone else had a similar problem and if so what did you do about it. If no one else has, should I just replace the valve.

Thanks,

Adam

[snowbird47]

I have not had this problem, but give us a little more detail. How much water are we talking about, a small spot under the pipes, a large puddle?
If the valve is sweating, do you mean on top of the vanity or underneath? I don't think changing the valve will do anything to stop sweating.

[Brownie]

I've never seen a hot water line "sweat". Cold water line, yes. That can generally be solved with a little foam rubber pipe insulation. A little more detail could help up analyze/solve the problem.

[short kid]

I never saw hot water lines sweat either, but I did have a problem on a plastic sink. When hot water was in the sink, the bowl would sweat. Usually under sink areas stay colder than the living areas, if they are not vented properly.

[RVhiker]

Another possibility for a water leak (besides sweating, supply line and drain line leaks) is splash water leaking between the basin bowl and the countertop, or leaking around the base of the faucet.