Signs of a drain excavation problem
- ✓ A camera shows a collapsed or broken pipe
- ✓ A pipe has dropped out of line and holds water
- ✓ Roots have wrecked a length of pipe
- ✓ Relining does not suit the fault
- ✓ Ground sinks above a drain run
Drain Excavation in Plymouth: what to know
Drain excavation means digging down to repair or replace a damaged pipe. It suits pipes that have collapsed, shifted or dropped out of line. The engineer removes the bad length and fits new pipe. Because the dig is large, it needs a clear plan.
A camera survey helps plan the dig. It shows how deep the pipe lies and where the fault sits. Because of this, the trench can be as short as the job allows. However, other pipes or cables may lie nearby, so ask how the engineer will check.
After the new pipe goes in, the crew fills the trench and restores the surface. Ask what surface repair the quote covers, such as turf, paving or tarmac. Check who owns the drain, since a shared pipe may involve a neighbour or the water company. Settle this before you agree, because it may change who pays.
How a typical job runs
- 1. Plan the dig. The engineer checks pipe depth and position, and looks for other services nearby.
- 2. Dig down. A digger or hand tools open the ground to expose the pipe.
- 3. Replace the pipe. The damaged length comes out and new pipe goes in at the right fall.
- 4. Fill and restore. The trench gets filled and the surface goes back as agreed.
What changes the price
Price depends on depth, length and ground conditions. Surface repair adds to the work, so check what the quote covers. Since ground can surprise, ask what happens if the engineer finds more damage. Ask for a written quote after a camera survey.
Drain Excavation: common questions
How long does excavation take?
It depends on depth, length and ground. A short, shallow repair may be quick, while longer runs take more time. Ask the engineer for an estimate in writing. Estimates can change if the ground is hard, so ask about that too.
Will digging damage my garden or drive?
Digging does disturb the surface. A camera survey helps keep the trench small. Ask what surface repair the quote includes, such as turf or paving. Since gardens differ, say what matters most to you.
Is digging the only choice for a collapsed drain?
For a fully collapsed pipe, digging is often the only sound repair. A partly collapsed pipe may suit relining, however. A camera survey shows which case you have. Ask for both options if both are possible.
Where to read next
This page sits under drain repairs, which covers the wider picture. For local details, see the pages for drain repairs in Tavistock and drain repairs in Kingsbridge, since each town has its own page. You can also read Why Home Buyers Should Consider a CCTV Drain Survey for a wider guide.