Drainage Installation and Repairs in London

• New foul and surface water drainage for extensions and alterations
• Repair and replacement of damaged drains
• Soakaway and attenuation installation
• Manhole and inspection chamber construction
• Connections to existing drains and the public sewer

• Drainage for extensions, conversions and new bathrooms
• Repair of leaking, blocked or root-damaged drains
• Soakaways for driveways and roof drainage
• Rerouting drains affected by building work

1. 1

   Enquiry and site visit

   Tell us about the work. For most projects we arrange a visit to see the property and discuss what you need.

2. 2

   Quotation

   We agree the scope, materials and price with you in writing before any work starts.

3. 3

   Planning and scheduling

   We agree a start date and sequence of work, and order materials in good time.

4. 4

   The work

   Preparation, installation or construction, and finishing, carried out tidily and with respect for your home.

5. 5

   Handover

   We walk through the finished work with you, clear up and make sure you are happy before we leave.

• A description of the work or the problem
• Any existing drainage plans or CCTV survey results
• Photographs of manholes and the areas involved
• The site address for checking public sewer records

• Drainage installed to the agreed layout and falls
• Manholes and access points for future maintenance
• Soakaways sized and constructed for the ground conditions
• Building control inspections arranged at the required stages

Underground problems can be bigger than they look from the surface — a CCTV survey is often the sensible first step for recurring issues, and we will say so honestly. Work on or near public sewers may need water authority approval or a build-over agreement. Drainage design, where needed, is available through our civil design service.

My drains keep blocking — what is the likely cause?

Recurring blockages usually mean a structural problem — a crack, root ingress or a collapsed section. A CCTV survey shows exactly what is happening before money is spent on repairs.

Can you build over an existing drain?

Building over or near a public sewer needs a build-over agreement with the water authority, and the drain may need protecting or rerouting. We handle the physical work and can provide the design information.

Do you repair drains or only replace them?

Both — localised repairs and lining are possible for some damage, while collapsed drains usually need excavation and replacement. We advise after seeing the survey.

• Drainage Design
• Surface Water Drainage
• Foundations Groundworks