Your slab home doesn't offer a lot of options to seek out damaged sewer pipe or sewer leaks. However, sewer leaks under your slab can impact the stability of your foundation and put you at risk of exposure to raw sewage under your house. Before you can get this repaired, you need to know exactly where the leak is so you can plan to make an accurate PVC pipe repair.
Testing for PVC Sewer Leaks
The most accurate way to determine if a section of your sewer line is leaking is to fill it with water. A review with a camera of your PVC sewer repair concern is only a first step. Be sure that your contractor is prepared to do hydrostatic sewer leak isolation. Looking at the condition of your sewer line is not accurate enough to determine where your leak may be.
During hydrostatic sewer leak isolation, the flow of water through the waste lines in your house will be temporarily stopped at the clean out outside of your house. Technicians will run water until your sewer line is full, and then pull the toiled furthest from the sewer clean out at the front of the house to review if the water level in your sewer line drops. If the water level doesn't drop, you don't have a water leak. If the water level does drop, you need to plan for PVC sewer pipe repair.
Once it's known that there's a leak somewhere under your house, the technicians will need to isolate it. They'll do this with an air bladder, and use the air bladder guided by a camera to block off certain sections of your sewer line and fill them with water.
By isolating sections of your sewer line and monitoring the water level in the sewer line, they can determine where the leak is. Further diagnostic testing can be done with the camera that was used to place the air bladder. At In-House Plumbing Company we no longer use cameras to identify any leakage. If we do it is only to assist in confirming a leak within your home.
PVC Sewer Leakage in your home
Chasing down a leak under your slab home can be costly and frustrating. Additionally, if multiple leaks are found at several points, the final determination on your number of leaks may not be able to be determined until the first set of leaks is repaired.
Work with a reputable plumbing contractor who can give you a solid location for your needed repairs and help you feel certain that your home is protected at the end of the job.