I had a condenser boiler fitted 4 years ago, everything seemed ok. Recently had new kitchen and where the waste pipe from the boiler goes through the worktop and into an adapter and on to the soil pipes there is a reappearance of water coming at the join. Not a lot but seems to be getting worse as a small puddle of water keeps appearing on worktop? Any ideas what is happening? Update .. just put blotter around the pipe out of boiler and it was dripping down this way and stopping at the join in worktop.. ?