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Plumbing

Hot water pipe repair

Anonymous user 23/02/2024 - 3.07 PM

We had a leak on central heating pipe on kitchen wall, now repaired by plumber. We have plastered over the hole created, but a bright blue stripe has appeared on the plaster. What is this? Also, how long before we can repaint the wall? Should we even have plastered over this pipe?

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3 Answers

Anonymous user

The blue green colour is a copper oxide. If its is a normal pink type of gypsum plaster and is very thin it is not a problem. Its is a chemical reaction between the wet plaster and the copper pipe. this reaction basically stops when the plaster is dry. If the plaster is dry to a pale pink colour you can paint it.
Answered12 January 2017
0

Anonymous user

Pipe could potentially still be leaking if that stripe has appeared recently. I would never plaster over copper pipes lagging them in protective sleeving would be the best idea as it prevents the copper being attacked leading to leaks
Answered17 January 2017
0

D & R Property and Plumbing Maintenance

Rating: 4.9 out of 5
New Romney
it may be flux from repair if solder was used .
Answered8 February 2017
0