I need to replace the old terra-cotta waste pipe from my house to the street, but there is a mature tree over the line. What can you tell me about the feasibility of using the trench-less system where they reline the waste pipe with an epoxy similar to the way they reline chimneys.
KilcoHQ 7:49pm 1-27-07
There are two methods of replacing waste pipes that won't harm your tree. One is called "pipe bursting" and the other is known as "pipe relining".
With pipe bursting, a small access hole is made where the damaged pipe starts and ends. Then, using the broken waste pipe as a guide, a specially designed machine pulls a replacement pipe through the old pipe. It is called pipe bursting because that is exactly what happens as the new pipe is pulled through. The head of the machine splits the old pipe apart to make room for the new pipe.
The other option is pipe relining. With pipe relining, damaged wasted pipes are left in place but lined with a fiberglass reinforced epoxy. This creates a pipe within a pipe and the result is super strong new pipe that can service your home indefinitely.
Both of these technologies are reliable and readily available from services like Roto-Rooter. Compared to the process of digging out your yard to reach the pipe, both pipe relining and pipe bursting are more expensive. However, if you have a precious tree, pool, sidewalk, driveway or other part of your landscape you'd want to protect, the service may be very worthwhile.
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