So what happened to my sewer pipe in the lawn?
Tree roots will grow in any direction where water is available, and DFW’s very dry summers cause aggressive tree roots growth. In homes builit in the 1970’s or earlier, clay sewer pipes were used in the lawn of homes connecting the home to the city sewer, Clay pipes tend to leak a little water at their connections. This attracts tree roots which damage the pipe to get more water from it. Today’s PVC sewer pipes are not prone to leaks and are much less likely to attract tree roots.
If you are having problems with sewer backups, many drain-clearing services insert spinning blades to clear and clean the pipe. This will often clear out tree roots and provide a temporary solution. In time, the roots will grow back and the process must be repeated. Also, as more water leaks from the pipe, the tree roots will become more aggressive with new root growth.
So what happened to my sewer pipe under my home?
During the same period clay pipes were used in the lawn (1970’s and before), Cast-Iron sewer pipes were used under the slab. Home’s built around 1980 and later likely have PVC pipes. Cast-Iron sewer pipes will rust and corrode over time. According to NACE International, clay soils are among the most severely corrosive. DFW is built on clay soils. Underslab Cast-Iron pipes, exposed to clay soil will rust and corrode faster.
In the photo is a Cast-Iron pipe in the 40 year age range and already badly deteriorated. The two darker rust spots are where the pipe was almost rusted through and waste water was seeping out.
Leaking sewer pipes under the slab attract tree roots. The growth of these roots will damage the slab foundation.
If the existing pipe is damaged too badly, it must be replaced. In many instances, however, an Epoxy Lining (see #2 below) can be used to create a repair lasting between 40 & 60 years. Epoxy linings can be used on both clay and Cast-Iron pipes.
A “Trenchless” method for Replacing sewer lines:
1. Pipe Bursting is the first method. We insert a pipe-bursting machine through small access holes where the damaged pipe starts and stops. The machine breaks up the damaged pipe and pulls new replacement pipe through at the same time.
2. Adding an Epoxy Liner can often repair existing pipes instead of replacing them (depends on the condition of the existing pipe). Al’s Plumbing adds epoxy liner inside the existing pipe, creating a tough new inner wall. Pipe relining is good for root-damaged pipes, rusted pipes, and to seal cracks and holes. Also, if there is no water leaking, the tree roots will leave it alone.
Al’s Plumbing provides Trenchless Sewer Pipe Repairs or Replacements. These can be done without digging up your lawn or breaking through the slab inside your home.
Call Al's Today For Sewer Repair
For an appointment to discuss Trenchless Sewer Line Repairs or Replacements, give us a call at 972-225-5257
or contact us online.