"Koi-lo" wrote in message
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"pau1gray" wrote in message
news

Just found out that one of my cemented in pipes are leaking. Does anyone
know of a pipe sealeant that can be used (bear in minds I can't get to
the outside of the pipe). Or does anyone know of a pipe liner that can
be used?
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Contact your local plumber before doing anything drastic. There are new
products out there every day. People who have houses on slabs probably
face the same problem when a pipe leaks.

Carol it isn't necessary to reply to every post, especially when you have no
knowledge of the subject. Saying call a plumber is the world's biggest d'uh.

Depending on what that water line feeds, you might be able to thread a hose
down the pipe, just keep in mind a smaller hose drastically reduces the flow
rate. Test and see if the reduced flow rate is acceptable in this
application.

There isn't much you can do, besides cut up the concrete if you want to
repair the pipe. You can either break up that entire section of concrete, or
you can use a concrete saw (looks like a giant circular saw) and cut out a
trench right over the pipe.

The problem with using a concrete saw is that you'll have a seam and the new
concrete will have a slightly different color. But if you're lucky you can
just buy a bag or two of cement and reinforcement bar (iron rods used to
make reinforced concrete) and pour it yourself.

If it's pvc, a hacksaw, a bottle of primer and solvent, 2 unions and a
section of new pipe is all you'll need.
If it's copper pipe, you'll probably need to call a plumber anyway, because
soldering wet copper isn't easy for a novice. They'll either cut out the
cracked section, use 2 unions, and a new section of pipe, or they'll braze
on a larger section of pipe over the crack.

Soldering new copper pipe just takes a bit of practice, soldering old pipe,
that has water inside is a bit trickier.