Dripping condensate pipe

WIAWSNB

1. Determine where - exactly - the drip is coming from. Paper towel and torch.
2. Determine whether either of the pipes is a simple push - interference - fit in that coupling. Gently but firmly grab both pipes, and twist them against eachother a small but firm amount.
3. Either fix it or bodge it. If one pipe is loose, then pull it out as far as possible, wipe clean, solvent, and reinsert. Or, cut away the coupling, or the whole section. Or bodge it - and a bodge will likely last 'forever' too.

To 'bodge', I would clean up with a toothbrush or similar any dirt around where the pipes enter the coupling. Make sure it's bone dry. Brush pipe solvent all around each joint a few times - although mainly a solvent, it does also have a small amount of 'body', so will hopefully both coat and 'melt' the pipe and coupling where they meet.

Once fully dry, wrap amalgamating tape - gently but positively stretched - around each joint.

For ease, apply in short lengths, say 3-odd inches at a time, stretched to around 5 or more, and then add further layers on top as needed, each one slightly further overlapping the layer below. When you are applying the end of any piece, pull it even more firmly until it almost tears as you pull it into position - it's very easy to not stretch that last half-inch, but you do want it to stretch. Apply additional layers - it will all amalgamate.

Electrical insulation tape will almost certainly be loosened from within by the leak.

If it's in a location that can be checked every 6 months or so, this should be ok.

If the builder who added the other waste pipe is actually a plumber, then see what he says. For a plumber to properly fix this joint would be a doddle that will take 20 minutes tops.

plumb1_2

use poly pipe gap filling cement

hatt55

Thanks for the responses all. I headed out to the shops to buy supplies to fix this after the few few messages. In the end I bought some plumbers putty so will see how that goes. I've also put a bowl underneath just incase.

I ran some kitchen roll around the joint and it did seem to be wet, so I do think thats where the water is coming from. But if the plumbers putty fails then I will investigate further whether its running from somewhere else.