Understanding Your Home’s Drainage System: A Homeowner’s Guide
Most homeowners have only a vague idea of how their home’s drainage system works until something goes wrong. Understanding the basics can help you identify problems early and know who is responsible for what.
The Two Main Drainage Systems
Every UK home has two separate drainage systems: foul drainage (waste water from toilets, sinks, baths, showers and appliances) and surface water drainage (rainwater from roofs, paths and drives).
Soil and Vent Pipes
Foul waste from toilets flows through a large-diameter soil pipe (usually 110mm) to the main drain. This soil pipe extends above roof level as a vent to allow gases to escape and prevent siphonage of trap seals. If you hear gurgling from toilets or notice bad smells, the soil vent pipe may be blocked or damaged.
Waste Pipes
Waste water from sinks, baths, showers, and washing machines flows through smaller waste pipes (32-50mm) to either the soil pipe or directly to a drain gully. Blockages in waste pipes are usually caused by grease, soap scum, hair, and food debris.
Drain Ownership and Responsibility
Drains within the boundary of your property are your responsibility. Once they pass the boundary, shared or adopted drains become the responsibility of your water company (United Utilities in Greater Manchester).
Common Drainage Problems
- Blocked drains: usually caused by fat, grease, wipes, and debris
- Root ingress: tree roots can penetrate and crack older clay pipes
- Collapsed drains: subsidence or ground movement can fracture drainage runs
- Drain surveys: a CCTV survey will identify the cause of persistent problems
Drainage Services in Greater Manchester
Kamdem HomeTech provide drain unblocking, drain repair, drain installation, and CCTV drain surveys throughout Greater Manchester. Call 07826088938.