I have a friend who says that a thick wrapping of teflon tape around the threads is perfectly adequate for joining copper to galvanized steel. I've also heard various people claim that dielectric unions are practically useless anyway, and that a segment of brass is the most effective measure. On the other hand, I've also heard that brass mated to galvanized steel also needs a dielectric union.
I'm planning to replace everything in the house with copper, except the pipes in the bathroom walls and the line from the street. I figure I'll get to the bathroom eventually, but I'd rather not dig up my front yard. What are my best options?
Also, all my wiring is new, and as far as I can tell none of it is grounded to the existing pipes. Do I need to worry about grounding the new stuff?
I'm planning to replace everything in the house with copper, except the pipes in the bathroom walls and the line from the street. I figure I'll get to the bathroom eventually, but I'd rather not dig up my front yard. What are my best options?
Also, all my wiring is new, and as far as I can tell none of it is grounded to the existing pipes. Do I need to worry about grounding the new stuff?