Drainage Installation & Repair in Staines
Drainage Installation & Repair Services in Staines
At Nelhams & Sons Ltd, we design, install, and repair drainage systems for homeowners and developers across Staines, Shepperton, Walton-on-Thames, Weybridge, and the surrounding areas of Surrey. Based in Staines since 1977, we have an unusually thorough understanding of the drainage challenges specific to this part of Surrey – from the London Clay that dominates much of our working area and slows surface water absorption, to the high water tables found close to the Thames in Laleham, Shepperton, and Staines itself. Every drainage system we install is designed for your specific ground conditions, not a generic spec.
Our Drainage Services
We design, install, and maintain drainage systems that protect your property whilst meeting all regulatory requirements. At Nelhams & Sons Ltd we specialise in:
New Build & Extension Drainage
Complete drainage design and installation for new properties and extensions across Staines and Surrey. This includes foul water systems, surface water management, connection to Thames Water mains sewers, and sustainable drainage (SuDS) solutions where required by Spelthorne Borough Council or your local planning authority. We handle all Building Regulations Part H compliance and coordinate Building Control inspections throughout.
Drainage Repairs & Maintenance
Emergency drain unblocking, pipe repairs, drain relining, CCTV surveys to identify problems, and preventative maintenance across Staines, Shepperton, Walton, and the wider Surrey area. We respond rapidly to drainage emergencies – typically within 2-4 hours during normal working hours – and carry full equipment for clearing, temporary repair, and emergency pumping on every callout.
Soakaways & Surface Water Solutions
Design and installation of soakaways, attenuation tanks, permeable paving systems, and sustainable drainage solutions across Surrey. Soakaway design in this area requires particular care given the London Clay subsoil – we conduct proper percolation testing and design systems that will perform reliably in the ground conditions specific to your site in Staines, Sunbury, or the surrounding villages.
How We Work
Effective drainage requires careful planning, proper installation, and full compliance with water authority regulations. Our systematic approach ensures your drainage works reliably for decades to come.
| Step | What to Expect |
|---|---|
| Initial Assessment | We assess your drainage requirements, existing system condition, and the specific ground conditions at your Surrey property |
| Site Survey | Ground conditions assessment, fall calculations, and connection point identification including Thames Water infrastructure where relevant |
| Regulatory Check | We verify Building Regulations Part H requirements and Thames Water or relevant water authority connection requirements |
| Design & Planning | Detailed drainage design with pipe layouts, gradients, inspection chamber positions, and SuDS provisions where required |
| Permissions & Approvals | Building Control notifications to Spelthorne Borough Council and water company connection applications as required |
| Excavation & Installation | Professional excavation, pipe laying, and bedding to British Standards |
| Connection & Testing | Connections to mains systems and comprehensive testing for leaks and correct flow |
| Inspection & Sign-off | Building Control inspections and water authority approvals at required stages |
| Reinstatement | Professional surface restoration and landscaping reinstatement |
| System Handover | Full documentation, warranties, and maintenance guidance for your new drainage system |
Building Regs Compliant
All drainage work meets current Building Regulations Part H and Thames Water authority standards
Emergency Response
Rapid response for drainage emergencies across Staines and Surrey – typically within 2-4 hours
CCTV Drain Surveys
Advanced CCTV surveys to accurately identify blockages and structural problems before we dig
Sustainable Solutions
SuDS-compliant systems designed to reduce flood risk and meet Surrey planning requirements
Why Choose Nelhams & Sons Ltd for Your Drainage in Surrey?
Drainage in this part of Surrey is not straightforward – and that is precisely why local experience matters. The London Clay that underlies much of Staines, Shepperton, and Sunbury drains poorly and expands and contracts with seasonal moisture changes, placing particular demands on drainage design and installation. Properties close to the Thames in Laleham, Staines, and Shepperton also contend with high water tables that affect soakaway viability and increase flood risk. We have been navigating these conditions since 1977 and design every system around what will actually work on your specific site.
- 48+ years’ experience with Surrey’s drainage challenges – London Clay, high water tables, and Thames-side conditions
- Comprehensive knowledge of Building Regulations Part H (Drainage) and SuDS requirements
- Established working relationship with Thames Water for mains connection applications
- Specialist expertise in clay soil drainage – French drains, land drains, and attenuation systems
- CCTV survey capability for accurate diagnosis before any excavation work begins
- Full public liability insurance (£2 million) and Which? Trusted Trader accredited
Best Surrey Business Award
Areas We Provide Our Drainage Service
Based in Staines, we install and repair drainage systems across a wide area of Surrey and South West London. We regularly work in the following towns and villages:
Frequently Asked Questions About Drainage in Surrey
Do I need Building Regulations approval for drainage work in Surrey?
Yes – most drainage work requires Building Regulations approval under Part H, including new drainage systems, extensions to existing systems, and replacement of underground drainage. We handle all Building Control notifications and arrange inspections at the required stages with Spelthorne Borough Council or your relevant Surrey local authority. Minor repairs may not require approval, but we will always advise you clearly on what applies to your specific project before any work begins.
What is the difference between foul water and surface water drainage?
Foul water drainage carries waste from toilets, sinks, and washing facilities to the mains sewer. Surface water drainage manages rainwater from roofs, driveways, and paved areas – typically connecting to soakaways or separate surface water sewers. Current regulations require these systems to be kept completely separate, and new developments across Surrey are increasingly required to incorporate sustainable drainage (SuDS) solutions to manage surface water rather than simply connecting to the mains.
How do you deal with clay soil drainage problems in Staines and Surrey?
London Clay is the dominant subsoil across much of our working area – Staines, Shepperton, Sunbury, and Walton-on-Thames all sit largely on clay, which drains poorly and moves significantly with seasonal moisture changes. We use specialist techniques including French drains, land drains, and carefully designed soakaways with proper aggregate and geotextile membranes to manage surface water in clay conditions. For sites where clay makes a conventional soakaway impractical, we may recommend attenuation tanks or connection to a surface water sewer instead. Our local experience means we know what works here before we start.
Can you connect my new extension drainage to my existing system?
In most cases yes – but we always survey the existing drainage first using CCTV where necessary to check pipe condition, gradients, and capacity before designing the connection. If the existing system is inadequate or in poor condition, connecting to it risks creating problems further down the line. We will tell you honestly what we find and recommend the most reliable solution, whether that is a direct connection, a partial upgrade, or a separate new connection to the mains.
What is a soakaway and do I need one?
A soakaway is an underground structure that allows surface water to drain gradually into the surrounding ground. They are commonly required for new driveways, extensions, and developments where surface water cannot be connected to a sewer – which is increasingly the case as water authorities push back on additional connections to already-strained mains systems. In clay-heavy areas like Staines and Shepperton, soakaway design requires percolation testing to confirm the ground can actually absorb water at the required rate – we carry out this testing as part of every soakaway project so you know the system will work before we install it.
How quickly can you respond to a drainage emergency in Staines or Surrey?
For genuine drainage emergencies – blocked drains, collapsed pipes, or flooding – we typically respond within 2-4 hours during normal working hours across our service area in Staines, Shepperton, Walton, Sunbury, and surrounding Surrey villages. We carry CCTV survey equipment, drain clearing tools, and emergency pumping equipment on every callout so we can diagnose and begin resolving the problem on the first visit wherever possible.
