Drain Excavations & Installations
When a drain can’t be fixed, we’ll replace it — safely, professionally, and with minimal disruption.
At Treaty Drains, we carry out full drain excavations and installations when repair options like patching or lining aren’t suitable. Whether it’s a collapsed drain, old clay pipework, or a brand-new drainage system for an extension or new build, we’ll handle it from start to finish.
When Excavation is Necessary:
Sometimes no-dig methods aren’t enough — here’s when digging becomes the best (or only) option:
- Collapsed or severely broken pipes
- Drainage systems made of old clay or cast iron
- Poor gradient or incorrectly installed drains
- Building an extension, outbuilding, or new property
- Relocating existing drains
- Tree root damage too severe for lining or patching
- Trap removals/ replacement.
What We Do:
CCTV Survey & Diagnosis
We always start with a camera inspection to confirm the problem and locate the affected section.
Excavation Planning
We carefully assess and plan the safest, cleanest way to dig with minimal impact on your property.
Excavation & Removal
We dig only where necessary, remove the damaged pipework, and prepare for installation.
New Installation
We fit new pipework to meet modern standards, ensuring correct flow and alignment.
Backfill & Site Restoration
We carefully backfill, compact, and restore your garden, driveway, or patio as close to original as possible.
We Install:
- Foul water drainage systems
- Surface water systems (soakaways, gullies)
- New manholes and inspection chambers
- Pipe rerouting for home extensions or landscaping
- Pipe rerouting for home extensions or landscaping
- Connections to mains sewer systems (where permitted)
- Rainwater harvesting or attenuation systems
Why Choose Treaty Drains?
- Experienced in deep & complex excavations
- Domestic and commercial work
- Minimal disruption — we treat your property with care
- Fully insured and qualified
- Free CCTV survey included with major works
⚠️ Signs You May Need Excavation:
- Frequent blockages
- Sunken or flooded areas in your garden or driveway
- Toilets or sinks backing up with no clear cause
- Older properties with outdated drain systems
- Builders needing new drainage for projects
Book a Drain Assessment Today
Not sure if your drain can be repaired or needs replacing? Let us take a look. We’ll carry out a full inspection and talk you through your options.