Hello,
I read on old messages in this group that concrete attacks copper pipe. What happens to it? Does the pipe corrode and form pin hole leaks? I'm a bit concerned because we've moved into a house where the ground floor is concrete and the pipes are buried in it. The house is thirty-something years old. How long does it take to corrode? Thirty years? If so, what will happen: will the floor get damp? Presumably I'll notice because as the water leaks out the radiators will fill with air?
I had to shorten a pipe once, when we changed radiators and I put sand around the pipe. Would this protect it? I suppose I should have used plastic channeling to cover it?
I would like to add a radiator under the stairs but although the pipes are visible, they are rigid because they are encased in concrete at either end. I could cut the pipe but I would not have the flexibility of movement to let me insert a fitting. Someone suggested a slip coupling. Where can I find one of these? Does it require a trip to a plumbers merchant? Is there a better way to make the join?
Thanks, Stephen.