On 2005-07-02, HerHusband wrote:

3. He insisted that rubber Fernco couplings that I used to connect new
PVC DWV with old copper plumbing are prohibited

I used one in our attic to connect our 3" PVC plumbing with a 3" ABS
section to stick out the roof (didn't want a white pipe above the roof, and
didn't have the vertical room for male/female adapters).

Did you paint the ABS pipe? My understanding is that plastic pipes
shouldn't be exposed outside. [Exception: those with UV inhibitors,
like (I think) grey electrical plastic conduit.] For this reason I
use a short length of copper DWV for any exterior vent.

To the OP, one thing my inspector told me was that rubber couplings
with two individual metal clamps separated by exposed rubber are only
approved for buried use. In exposed locations, indoors and out, the
rubber couplings should have a continuous metal shield for the full
length. Could this be what your inspector was complaining about?

Cheers, Wayne