What would make more sense to fix the hole in the pipe or to replace the whole pipe At this time I open to all sugestion

My husband and I are working on an add on great room built on a slab. Now, we are finding there is some leaking under the walls. How can we fix this before going any further? We have outside of add on completely finished but on the inside it is just a skeleton... no insulation or dry wall yet.

I have a leak under my bathtub. At first thought it was the drain, replaced it and saw that the water was actually coming up from under the dirt under the slab. Is it possilbe to repair this myself? Also, can I run the drain pipe over head?

HELP!! Our bathtub shower has started leaking and the water is running into our sons room onto his carpet. His room is located next to the bathroom, but not next to the pipes! The plumber is stumped! He cut a hole in our daughter's wall (which is next to the bathroom and the pipes in the tub). ...

I have a drain pipe coming from my sink that is backing up into my kitchen floor. It seems that has ate away at the concrete and the water is backing up through the damaged pipe through a hole located under my sink and bottom cabinets. I can see the where the water is coming out but I don't know...