Short answer
A sewer warranty is only as good as its written terms. “Lifetime” typically means the life of the installed pipe or liner for the original owner, not forever, and it covers the workmanship and the material against failure — not roots in unlined sections, not damage from later digging, not the parts of the line that were not worked on. “Transferable” should mean the next owner gets the same terms without a fee. Get the document, not the sentence.
Warranties are documents, not adjectives
Every sewer bid in Seattle seems to carry a warranty word — lifetime, 25-year, transferable, unconditional. The words are free. What you are relying on is a set of written terms: what is covered, for how long, for whom, with what exclusions, and what happens when you make a claim. Ask for that document before you sign, and read it against the questions below.
What "lifetime" usually means
In most contractor warranties, "lifetime" means the life of the product installed — the liner or the new pipe — while the original purchaser owns the property. It does not mean the life of the house, the life of the owner, or forever. Some warranties define a fixed term instead (10, 25, 50 years); that is often clearer and no worse. Manufacturer warranties on liner and HDPE materials are separate from the contractor's workmanship warranty, and both should be handed over.
What is typically covered and excluded
| Usually covered | Usually excluded |
|---|---|
| Failure of the installed liner or pipe in the section worked on | Sections of the line not worked on |
| Workmanship: joints, connections, reinstated branches | Damage by later excavation, utilities, tree removal |
| Root intrusion through the lined or replaced section | Roots entering through unlined pipe upstream or downstream |
| Re-inspection and repair of a covered failure | Blockages from disposal (wipes, grease, objects) |
| — | Consequential damage (the flooded basement) — that is insurance |
| — | Anything if the work was not permitted |
What "transferable" should mean
That the next owner of the property gets the same coverage for the remaining term, on the same conditions, and that the transfer does not cost them anything or require anything beyond telling the contractor. Watch for: a transfer fee; a requirement to re-inspect at the buyer's expense; a shorter term for subsequent owners; or a registration window that a seller can easily miss. A warranty you intend to feature in a listing needs to survive the sale intact — the selling article assumes it will.
Questions to ask before signing
- Can I see the warranty document, not the summary on the bid?
- Exactly which section — from where to where — does it cover?
- What is the term, and how is "lifetime" defined?
- What are the exclusions, in full?
- What is the claim process — who do I call, how fast do you come, who pays for the camera?
- Is it transferable, and what does a transfer require?
- Is the manufacturer's warranty on the liner or pipe separate, and do I get it?
- How long has the company operated under this name and licence? (Warranties do not outlive companies.)
What our warranty covers
Our transferable lifetime parts-and-labor warranty is on full sewer replacements, subject to the written warranty terms. Lining, bursting and repairs come with written paperwork for your job. The reason for spelling it out is the same reason this article exists: a warranty you can read is one you can rely on.
Questions people also ask
Does a warranty cover the whole sewer line?
Only the section that was worked on. A liner from the foundation to the property line is warranted for that run; the street-end section that was left alone is not. The warranty should name the section.
What voids a sewer warranty?
Commonly: unpermitted work, damage by another contractor, disposal of things the pipe was not designed for, and a failure in a section outside the work. Read the exclusions list; it is usually short and specific.
Is a longer warranty better?
A long warranty from a company that is still in business and answers the phone is better. A long warranty on paper from a company that will not be around, or whose terms exclude everything that actually goes wrong, is not.
What should a transferable warranty require at sale?
Ideally nothing beyond notice. Some require a fee, an inspection, or registration within a window. Know which before you list the house on the strength of it.
More of the questions we hear every week are on the FAQ page .
Sources
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