Drainage Systems

1. Blockages

• Grease, debris, wipes or scale build-up in pipes
• Slow draining sinks, toilets or gullies
• Backing up at low points and manholes

2. Cracks, Fractures & Collapse

• Pipes cracking from ground movement or heavy loads
• Severe collapse from poor installation or soil pressure
• Sinkholes or depressions appearing above pipe runs

3. Root Intrusion

• Tree roots forcing into joints and cracks
• Roots expanding inside pipes and trapping debris
• Recurrent blockages in the same location

4. Wear, Misalignment & Odour

• Older clay or metal pipes corroding and degrading
• Ground shifting causing pipes to sag or separate
• Bad smells, damp patches or frequent backups

minor Repairs

• High-pressure jetting to clear blockages
• Mechanical root cutting
• Internal sealant repairs to small cracks

moderate Repairs

• Patch repairs to localised damaged sections
• Replace cracked gullies, traps and inspection chambers
• Re-bed displaced sections and seal joints

major Repairs

• CIPP drain relining (resin liner cured in place)
• Trenchless pipe bursting or replacement
• Excavation and full replacement of collapsed runs

When Replacement Is Needed

• New build, extension or change of use
• Existing drainage is collapsed or under-sized
• Site has poor surface water management
• Connecting to mains sewer or upgrading to SuDS

Installation Steps

1. 1

   CCTV Survey & Design

   • Camera survey to map existing runs and condition
   • Calculate flows and required pipe sizes
   • Design gradients and connection points
2. 2

   Excavate & Lay Pipes

   • Trench to correct depth with proper gradient
   • Lay PVC, clay or concrete pipes on bedding
   • Maintain fall to allow gravity flow
3. 3

   Chambers, Gullies & Traps

   • Install manholes and inspection chambers at junctions
   • Fit gullies to collect surface water
   • Use traps to prevent odours from entering buildings
4. 4

   Outfalls & SuDS

   • Connect to mains sewer or septic system
   • Install soakaways for surface water disposal
   • Add permeable paving or swales where appropriate