I'm going to be tearing up my concrete pool deck and replacing it with pavers. While it's torn up I'm going to replace all the underground piping (being that my deep end return line has a leak anyway).
What is the best type of piping I should use for the replacement? I want one that is most resistant to cracking and freeze/thaw issues (I live in the North East). Regular PVC? Flexible PVC? Some other kind?
Also I thought I might run a larger pipe, and then run the actual pipes inside the larger one. That way if I develop a crack and need to replace them, I can pull out the old pipe and thread a new one underground without having to tear up much of my new deck. Being that I've never seen this done though, I'm wondering if there's any reason why this wouldn't be a good idea?