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Joshua Putnam
 
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No personal experience with it, but I spoke with a contractor's rep for
half an hour or so at a condo association trade fair last year, got a
reasonably good idea how it works. It looks like it should be quite
reliable.

They basically sandblast the interior of all your pipes down to bare
metal for good ahesion, and use compressed air to blow the coating
through the pipes.

They said it wasn't usually cost-effective on single-family residences,
unless there was a lot of pipe in slab that would have to be replaced.
Makes a lot more sense on multi-family because of the speed and minimal
disruption.

It works on copper or galvanized, down to 1/2" nominal.

--
is Joshua Putnam
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