Best method for re-piping
My townhouse was built in 1978 with galvanized pipe. I understand galvanized has a 30-40 year life span before it develops leaks. I have now had three pin hole leaks over the last 4 years. I have been variously advised to simply repair leaks as they occur, which seems dangerous to me, or to re-pipe the house. If the latter, I understand I can so with copper (expensive and lots of sheerock repair necessary afterwards), with HEX pipe (less repair and cheaper) or a plastic which is blown in under pressure and coats the insides of pipes. What do your experts recommend?