Gershon wrote:
....

I'm looking for more data points to see whether there is a trend.

1 for 1 is a trend...

And you've a piece of the material to inspect firsthand; what more do
you expect?

Other stuff to consider...

http://www.pprc.org/research/epp/EpoxyPipeCoating.pdf

One process only has 10-yr warranty; how old are the pipes in the house
at present for comparison?

Cost estimates in most references I've run across are roughly equivalent
to replacement _INCLUDING_ repair of finished surfaces unless very
upgraded treatments were used.

In addition, the DuraFlo site says if they find a leak while doing the
job they repair the section, anyway.

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