I had two new hot water cylinders installed by a local plumbing firm on Dec 23. There's now slightly damp boards underneath one of them. It must be a v slow leak - hard to tell where it's from - but it's coming from somewhere I've attached a pic of what looks like the most likely culprit - what I think is the vent sits the leak, and one of the joints has tacky stuff around it (see above the grey plastic in my second pic). Does this look like a problem? This part of the second cylinder has has been cladded, but that also seems a touch damp. Thanks! Also, let me know if I'm best starting new threads for different issues, or sticking to the one thread.