Copper pipe / corrosion

I've got about 6 feet of copper pipe to the sink in the kitchen laid
in a concrete floor - it is denso'd, but one end (nearest the source)
is quite heavily oxidised.
Any guesses as to how long pipework in that condition may last before
it leaks like a biatch ? (it'd be hard to get pipework to the sink via
any other route FWIW)
Reply to
Colin Wilson
"Colin Wilson" wrote in message news: snipped-for-privacy@news.individual.net...
If you can dig up the pipe without much bother, use plastic pipe. Can you see the denzo tape on the pipe? Is the pipe subject to damp at that point?
Reply to
Doctor Drivel
Probably not that easy to dig up at present, as it crosses a doorway / washing machine / cupboard that the sink is in :-}
I can't actually see the end of the denso, but I know it's there, I did it myself :-}
As far as I know, unless there's a pinhole in an adjacent 90 degree bend (it does a 90 out of the floor, and has another two 90's in close proximity to go through what used to be the old outside wall of the house), there shouldn't be damp at that point.
There's a chance it might simply be caused by condensation I suppose, given that the concrete floor is itself quite a cold mass.
Reply to
Colin Wilson
"Colin Wilson" wrote in message news: snipped-for-privacy@news.individual.net...
The denzo tape should protrude above the floor level. If not, then if wet around the pipe/floor point corrosion will occur. It may be worth digging up just around the pipe and apply more denzo at the point and make sure it covers the pipe above floor level. ..and clean off the oxide.
Reply to
Doctor Drivel

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