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Default Pinhole leaks in attic pipe -- diagnosis and replacement questions

I had a flood, due to a leaking pipe in my attic crawlspace (brick house,
built 1943, Tucson AZ, pipe likely put in during 1970 kitchen remodel).

The leak was apparently due to corrosion the plumber attributed to
a mixture someplace in the system of galvanized steel (what leaked) and
copper. I'm trying to decide whether to repipe the whole house, which is
going to be expensive and a pain, or not. My gut tells me to do it, but
thought I'd ask anyone who knows more about plumbing than I do, especially
in this sort of house, for advice on how to proceed.

Thanks,

Andy Barss


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Default Pinhole leaks in attic pipe -- diagnosis and replacementquestions

On Jun 1, 5:37*pm, Andrew Barss wrote:
I had a flood, due to a leaking pipe in my attic crawlspace (brick house,
built 1943, Tucson AZ, pipe likely put in during 1970 kitchen remodel).

The leak was apparently due to corrosion the plumber attributed to
a mixture someplace in the system of galvanized steel (what leaked) and
copper. I'm trying to decide whether to repipe the whole house, which is
going to be expensive and a pain, or not. *My gut tells me to do it, but
thought I'd ask anyone who knows more about plumbing than I do, especially
in this sort of house, for advice on how to proceed.

Thanks,

Andy Barss


Are you going to be in the house for several years, if so, I'd
replace. You have peace of mind that way.
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Default Pinhole leaks in attic pipe -- diagnosis and replacement questions

Andrew Barss wrote:
I had a flood, due to a leaking pipe in my attic crawlspace (brick
house, built 1943, Tucson AZ, pipe likely put in during 1970 kitchen
remodel).

The leak was apparently due to corrosion the plumber attributed to
a mixture someplace in the system of galvanized steel (what leaked)
and copper. I'm trying to decide whether to repipe the whole house,
which is going to be expensive and a pain, or not. My gut tells me
to do it, but thought I'd ask anyone who knows more about plumbing
than I do, especially in this sort of house, for advice on how to
proceed.

Thanks,

Andy Barss


you'd only get the corrosion where the two metals touch.

as soon as you fix that one, you'll get a leak 2 other places.

i'd repipe with pex if i was staying in the place longer than a few months.

regards,
charlie
cave creek, az


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Default Pinhole leaks in attic pipe -- diagnosis and replacement questions

Andrew Barss wrote:
I had a flood, due to a leaking pipe in my attic crawlspace (brick house,
built 1943, Tucson AZ, pipe likely put in during 1970 kitchen remodel).

The leak was apparently due to corrosion the plumber attributed to
a mixture someplace in the system of galvanized steel (what leaked) and
copper. I'm trying to decide whether to repipe the whole house, which is
going to be expensive and a pain, or not. My gut tells me to do it, but
thought I'd ask anyone who knows more about plumbing than I do, especially
in this sort of house, for advice on how to proceed.

Thanks,

Andy Barss


Do you wanna screw with it twice? Some things fall in the 'Life is Too
Short' category. Bite the bullet and upgrade the run end-to-end. It'll
make the house easier to sell, if the pipe is where the inspector can
see it. Any other runs that are easy to get to while plumber has his
tools out should be replaced as well.

--
aem sends...
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Default Pinhole leaks in attic pipe -- diagnosis and replacement questions

Andrew Barss wrote:
I had a flood, due to a leaking pipe in my attic crawlspace (brick house,
built 1943, Tucson AZ, pipe likely put in during 1970 kitchen remodel).

The leak was apparently due to corrosion the plumber attributed to
a mixture someplace in the system of galvanized steel (what leaked) and
copper. I'm trying to decide whether to repipe the whole house, which is
going to be expensive and a pain, or not. My gut tells me to do it, but
thought I'd ask anyone who knows more about plumbing than I do, especially
in this sort of house, for advice on how to proceed.

Thanks,

Andy Barss


Having been a Preferred Contractor for several insurance companies, I
will point out this little bit of info, then you can make up your mind
fully armed with all the data that you need;

When dealing with leaking water pipes, hoses, supply lines, etc. in
homes with some age, the insurance companies will pay for all damage to
the home caused by the leak, but not the leak itself. That is
considered "maintenance". In addition, now that the homeowner knows
that there are problems with his aging plumbing system, if a second leak
and flood should occur, the insurance company will not pay, since the
homeowner did not take adequate steps to perform the necessary
maintenance on his home (ie. replace the failing plumbing).

Robert Allison


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Default Pinhole leaks in attic pipe -- diagnosis and replacement questions

chaniarts wrote:
: Andrew Barss wrote:
: I had a flood, due to a leaking pipe in my attic crawlspace (brick
: house, built 1943, Tucson AZ, pipe likely put in during 1970 kitchen
: remodel).
:
: The leak was apparently due to corrosion the plumber attributed to
: a mixture someplace in the system of galvanized steel (what leaked)
: and copper. I'm trying to decide whether to repipe the whole house,
: which is going to be expensive and a pain, or not. My gut tells me
: to do it, but thought I'd ask anyone who knows more about plumbing
: than I do, especially in this sort of house, for advice on how to
: proceed.
:
: Thanks,
:
: Andy Barss

: you'd only get the corrosion where the two metals touch.

That's what I thought as well, but the plumber showed me a length of
galvanized steel cut out of the middle of a longer length in the attic,
with the hole in it. And pointed out some elbows in an exposed wall
(exposed as part of the renovation we have in progress) that he said
were showing signs of the corrosion, and they're minimally several feet
away from any copper.

So, is this possibly the result of something else?


-- Andy Barss
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Default Pinhole leaks in attic pipe -- diagnosis and replacement questions

Andrew Barss wrote:
chaniarts wrote:
Andrew Barss wrote:
I had a flood, due to a leaking pipe in my attic crawlspace (brick
house, built 1943, Tucson AZ, pipe likely put in during 1970 kitchen
remodel).

The leak was apparently due to corrosion the plumber attributed to
a mixture someplace in the system of galvanized steel (what leaked)
and copper. I'm trying to decide whether to repipe the whole house,
which is going to be expensive and a pain, or not. My gut tells me
to do it, but thought I'd ask anyone who knows more about plumbing
than I do, especially in this sort of house, for advice on how to
proceed.

Thanks,

Andy Barss


you'd only get the corrosion where the two metals touch.


That's what I thought as well, but the plumber showed me a length of
galvanized steel cut out of the middle of a longer length in the
attic, with the hole in it. And pointed out some elbows in an
exposed wall (exposed as part of the renovation we have in
progress) that he said were showing signs of the corrosion, and
they're minimally several feet away from any copper.

So, is this possibly the result of something else?


-- Andy Barss


yes. acidic water would cause corrosion, and you would expect this to occur
anywhere in any of the pipes. a good plumber would know that, and a good
plumber would know that you can only get a galvanic reaction where
dissimilar metals touch.


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