Our 1912 home has had growing water damage to the dining room ceiling. Pitted copper pipes are speculated as the problem (determined by a plumber). It is 34 degrees here (outside) and we are concerned about draining the system for too long. I'd like to go with CPVC but I'm concerned it has to "set up" before water is returned to the system. Copper would be fine, but I'm concerned about the cost. Any thoughts? Thanks.

I just looked at the directions on the can of cement I have. It says let cure 4 hours. Before I went back with copper, I would look at what happened to the old.

That means the CPVC can be filled after 4 hours? I'm not sure what you mean in your second sentence. Thanks!

In practice, I have turned the water back on long before 4 hours, but one seldom goes wrong reading and following directions.

If the copper has gone bad, it could be from electrolysis. It would not be a good idea to install more copper without identifying and eliminating the cause of the electrolysis.

I would definitely replace with plastic. Labman says."
If the copper has gone bad, it could be from electrolysis. It would not be a good idea to install more copper without identifying and eliminating the cause of the electrolysis. Also aggressive water can produce pinholes in copper pipes. Going plastic will remove the threat of both. Good luck, tom

Thanks so much. In fact, I recently learned it has to do with electrolysis due to old iron piping that was originally used. What a helpful site this has been. All the best to you both.

Pex anyone?
Way cheap and no glue
25 year warranty

I think CPVC and PCV is friendlier to a DIY, and the cost is about the same. It is tough to screw up PVC.

pex anyone?
way cheap and no glue
25 year warrenty


I agree pex is the better way... cpvc is safe to use but I hate it and it freezes up and cracks to easily.

I think PPR can be good option.Cheap,Durable & 50 years Product Guarantee