Central Heating

Brown line stain following radiator pipes

Anonymous user 03/03/2024 - 3.35 PM

We’ve reverently had an extension Built. With building this we’ve had new radiators put in. The rest of the system is on copper. The new two radiators are on push fit. This has been chased into the wall and plastered over. However now it’s got colder there seems to be a brown stain following exactly where the new pipe goes across the roof. I can feel the pipe and wall warm where the pipe runs so I know it’s that. No loss of pressure in the system at since completed 6 months ago. But now this stain has appeared. We’ve had very cold weather and bad rain lately. Any advice on what this could. It’s for sure follows the pipe.