What Are the Disadvantages of Trenchless Sewer Pipe Lining?

The disadvantages of trenchless sewer pipe lining are its limits on severely damaged lines, the fact it doesn’t fix slope problems, and a small reduction in pipe diameter after lining. The most common blocker is a pipe that’s broken or fully collapsed, which typically requires excavation and replacement instead of lining.

Our teams use video inspection, hydro‑jet cleaning, and then the best‑fit lining method, and we routinely apply these options for homeowners around Snohomish while avoiding replacement unless it’s truly needed. A simple tech truth: if the camera shows a long belly (a sag that holds water), lining can seal the pipe but cannot remove that low spot.

Consider alternatives if you see any of these during inspection:

• Fully collapsed sections or major offsets
• Extended bellies where water sits
• No clear access to clean and prep the host pipe
• Complex tie‑ins or tight bends that prevent proper installation

Start with a video camera inspection to decide between cleaning, lining, or excavation. <br/> Updated: 2026-05-05 <br/> Need help in Snohomish, WA? Call (425) 387-1507 or book online. "Sewer fixed and working great!" — Douglas R.