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Author:
Eddieb (CA)
Had slab leaks. Replaced w pex-b. Some of solder joints worked fine while a few others have like burn areas that leak. Is it the flux burning or what ???
Thanks in advance
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Author:
ArthurPeabody (NM)
It's a failed joint. Whoever soldered it didn't: clean the ends of the pipes and fittings thoroughly, or didn't apply enough flux, or didn't heat the joints thoroughly, or didn't use enough solder - or a combination. Flux boils off even when you do it right. The commonest soldering mistake is melting the solder with the flame rather than heating the joints enough to melt the solder on them.
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Author:
sum (FL)
You mean the slab leak happened years after construction? How many years?
Causes could be sub standard installation, water chemistry or excessive pressure.
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