Pipe lining basics
CIPP lining can reduce digging when the existing pipe can be cleaned and shaped enough for a liner. It may not fix major slope problems or severe collapse.
Ask how the line will be cleaned, cured, reinstated, and warrantied.
Pipe bursting basics
Pipe bursting replaces the old line by pulling a new pipe through the path while breaking the old pipe apart. It usually needs access pits.
Ask whether the route, depth, utilities, and connections make bursting practical.
When to treat this as urgent
If sewage is coming up through a floor drain, shower, tub, or basement toilet, stop using water in the house and get help quickly. Do not run laundry, dishwashers, showers, or extra toilet flushes until the blockage is understood.
If only one sink or toilet is slow, the issue may be inside the home. If several fixtures are slow or the lowest drain backs up first, the main sewer line is more likely involved.
What to ask before approving work
Ask whether the contractor has camera evidence, where the defect is located, whether cleaning alone is enough, and whether repair or full replacement is being recommended.
For expensive work, ask for a written scope that explains access points, restoration, permits, expected timeline, warranty, and whether trenchless repair is possible.