If your sewer line or water main needs repair, you're likely facing a big decision: go with traditional open-cut excavation, or choose the newer trenchless method. Both work — but the right choice depends on your pipe type, yard layout, damage severity, and budget.
As a licensed plumbing contractor serving Tigard, Beaverton, and Washington County since 2014, Hydro Plumbing has completed hundreds of pipe repair and replacement jobs using both methods. Here's an honest comparison.
What Is Trenchless Pipe Repair?
Trenchless methods repair or replace underground pipes without digging a large trench across your yard. The two main approaches are:
- Pipe lining (CIPP): A resin-coated liner is inserted into the damaged pipe, inflated, and cured in place — creating a new pipe inside the old one.
- Pipe bursting: A bursting head is pulled through the old pipe, shattering it outward while simultaneously pulling a new HDPE pipe into place.
What Is Traditional (Open-Cut) Pipe Replacement?
Traditional excavation involves digging a trench from one end of the pipe to the other, physically removing the old pipe, and installing a new one. It's been the standard method for decades.
Trenchless vs. Traditional: Side-by-Side Comparison
| Factor | Trenchless | Traditional |
|---|---|---|
| Yard disruption | Minimal — 1–2 small access holes | Significant — full-length trench |
| Job time | Usually 1 day | 1–3 days |
| Average cost | $3,000–$8,000 | $2,500–$7,000 |
| Landscape restoration | Not needed | Full restoration required |
| Works with all pipe types | Most — some exceptions | All pipe types |
| Lifespan of repair | 50+ years (CIPP) | 50+ years |
When Trenchless Is the Better Choice
- You have landscaping, a driveway, or a patio over the pipe you don't want destroyed
- You need the job done in a single day
- Your pipe is damaged but still structurally intact enough to line
- You're in an urban Tigard or Beaverton property with limited yard access
When Traditional Excavation Makes More Sense
- The pipe has completely collapsed or the damage is extensive throughout its length
- Trenchless equipment cannot access the pipe's entry points
- The existing pipe has severe root intrusion that has grown through the walls
- Cost is the primary factor and you don't mind yard restoration
Oregon-Specific Considerations
In Washington County, many older homes (1960s–1980s) have clay or Orangeburg sewer pipes that have deteriorated. These pipes are often good candidates for CIPP lining if the walls are still intact. Oregon's clay soil also has a higher rate of root intrusion from the area's abundant trees — something our technicians see frequently in Tigard, Lake Oswego, and Beaverton yards.
Get a Free Estimate in Washington County
Hydro Plumbing provides free camera inspections and estimates for both trenchless and traditional pipe repair across Washington and Yamhill Counties. We'll show you the pipe condition on camera, explain both options, and give you a straightforward recommendation — no upselling, no pressure.