Is there a tape / paper / compound I can put on a plumbing join to see if it’s leaking over time? Any liquid water seems to evaporate before I can see or feel it. I’m guessing there’s something that’ll change colour (and stay that colour) if it gets wet...
A plumber that came round said to just wrap a bit of tissue paper round it, if it's somewhere you can see/check easily. It's more obvious if the tissue gets wet. Actually thinking about it coloured craft tissue / crepe paper shows watermarks readily.
Is there a tape / paper / compound I can put on a plumbing join to see if it’s leaking over time? Any liquid water seems to evaporate before I can see or feel it. I’m guessing there’s something that’ll change colour (and stay that colour) if it gets wet...