It depends on how much of the pipe is bad.
A spot repair makes sense when the camera shows one problem, such as a
single break, one root-filled joint, or one shifted joint, and the rest
of the pipe is sound.
Replacement makes sense when the damage is spread along the line:
cracks at many joints, roots in several places, or cast iron that has
rotted through along the bottom. Pipes like that keep failing one
section at a time.
Ogden City,
for example, lists pipe breaks or cracks due to tree roots among the
causes of sewer backups.
A sag has to be dug up, because the slope of the pipe has to be
corrected. Trenchless lining or pipe bursting can renew a long run with
less digging when the pipe qualifies.
We show you the video and explain why we recommend one option over the
other.