What is open-trench sewer replacement?
The traditional way. A trench is dug along the line, the old pipe is taken out and new pipe is laid at the right slope. Everything can be seen and corrected. The cost is the surface above: lawn, concrete, plants, sometimes a driveway.
What is trenchless sewer repair?
A way to renew the line with little digging. The two common methods are pipe bursting, where a new pipe is pulled through the old one and breaks it outward, and pipe lining, where a liner is cured in place inside the old pipe. Both work from small access pits. See trenchless sewer repair.
How do they compare?
- Digging. Trenchless needs one or two pits. Open trench digs the whole run.
- Yard and paving. Trenchless leaves most of it alone. Open trench means restoring what was dug.
- Time. Trenchless is usually quicker on site.
- Pipe condition. Trenchless needs a path through the old pipe. A collapsed line may not allow it.
- Slope problems. A sag cannot be fixed by lining, because the new pipe follows the old one. Open trench corrects the slope.
- Short repairs. For one bad spot close to the surface, digging just that spot is often simplest.
- Cost. It depends on depth, length and what is above the pipe. Trenchless often wins where there is concrete or landscaping to protect. We price both when both are possible.
When is trenchless the better choice?
When the line runs under a driveway, a patio, mature trees or a finished yard, and the pipe still holds its shape and slope.
When is open trench the better choice?
When the pipe has collapsed, when it sags, when the slope was wrong from the start, when only a short section is bad, or when other work is opening the ground anyway.
How do you decide?
With a camera inspection. It shows what the pipe is made of, where it is damaged, whether it sags and how deep it is. You watch it with us, then get a free written estimate with the method we recommend and why. When the job needs a permit, we pull it. If the work is for a sale, see sewer lateral compliance.
Who is Friendly Services?
A family-owned plumbing company with over 20 years in Hayward. License CSLB #1156315 (C-36 plumbing), $1M general liability cover and workers' comp. Our own work has a five-year workmanship warranty, and we have 100+ five-star reviews online.