jetgraphics wrote:
Mysterious leak dilemma.

In the basement, occasionally (weeks apart), one or two drops fall off the
plastic drain elbow directly under the toilet upstairs.
Apparently there's no leak coming from inside the pipes. Nor is there
water
seeping under the toilet (floor is dry). The leak doesn't correlate with
usage. Repeated flushings do not show any leaks. Ditto for other fixtures.

Could condensation be responsible?

That was going to me my guess.


Vent stack leak?
Any other ideas?


TIA!

--
Joseph E. Meehan

26 + 6 = 1 It's Irish Math