Drainage Surveys — London & Surrey

CCTV Drainage Surveys That Tell You What’s Actually Wrong

Recurring blockages, mystery damp near drain runs, bad smells, rats, or a house purchase — a proper drainage survey shows you the cause on camera, with a written report you can act on. Fully insured and qualified damp, mould and leak specialists.

📞 0800 054 1524
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What our drainage surveys cover

CCTV drain survey equipment set up on site during a DML night call-out.

CCTV drain surveys

High-definition push-rod cameras for residential drains, larger crawlers for commercial runs. Every metre recorded, defects classified.

Drain mapping

We map the layout of your drainage — where the runs go, where the manholes are, what connects to what — so any repair is planned, not guessed.

Blocked drains

Clearing removes the symptom; the camera shows the cause — grease, scale, roots or a defect that keeps catching waste.

Cracked & collapsed drains

Fractures, displaced joints and collapses located and measured by position and depth, so you know exactly what needs repairing and where.

Root ingress

Tree roots enter through joints and defects and grow until the line blocks. We show the entry points and the extent.

Pitch fibre pipes

Common in 1950s–70s properties and prone to deforming. We identify pitch fibre and assess its condition honestly.

Manholes & chambers

Condition of benching, channels and covers checked as part of the survey.

Pre-purchase drain surveys

Drains are expensive to replace and invisible on a standard homebuyer survey. A camera survey before exchange protects your position.

Insurance drainage reports

Insurance-ready reports with footage, stills and defect classification — evidence prepared for your insurer or loss adjuster.

Commercial drainage surveys

Blocks of flats, managed buildings and commercial premises, with reporting suitable for property managers and freeholders.

Drain leak detection

Leaking drains feed “mystery damp” into walls and floors for years. We link drainage defects to internal damp and mould evidence.

Damp & mould from drains

Where a drain defect is causing internal damp, we can combine the drainage survey with a damp survey or mould inspection in one visit.

What happens on site

We talk through the history — what you’ve seen, when it started, what’s been tried.
If the line is blocked or heavily silted, jetting may be needed first so the camera can actually see the pipe walls — we’ll tell you before, not after.
The camera goes through every accessible run; defects are logged by position and depth.
We show you the footage and explain the findings in plain English.

The report and evidence

You receive the recorded footage, stills of each defect, a defect classification, positions and depths, and clear repair and reinstatement recommendations. For claims, the report is prepared to support the insurance process — findings, photographs and recommendations your insurer or loss adjuster can work with.

Blocked manhole full of silt and sewage — CCTV drainage survey — Blocked manhole found during a DML CCTV survey.

Downpipe overflowing into blocked gully — Overflowing gully traced during a drainage investigation.

What happens during a CCTV drainage survey. (illustrative diagram)

After the findings

Where repairs are needed we set out the options — patch lining, excavation, re-rounding for pitch fibre, root cutting — with our recommendation and reasoning. Works are quoted based on the job. You’re free to use the report with any contractor; there’s no obligation to use us for the repair.

Drainage survey FAQs

Do you clear the blockage or just survey it?

Both where needed — if jetting is required first we’ll say so up front, then survey the cleared line so the cause is on camera.

Will the survey work if my drain is full of water?

Standing water usually means a blockage or a belly in the pipe downstream. Part of the survey is establishing which — jetting first if needed.

Can you tell if the drain is causing my damp?

Yes — that link is our specialism. We combine the drainage findings with moisture readings inside the property, and set out the connection in the report: how our investigation methods work.

Is the report suitable for my insurance claim?

The report is prepared to support insurance claims — footage, stills, defect classification and recommendations. Acceptance of any claim is always the insurer’s decision, and we’ll never pretend otherwise. See insurance reports.

Book a drainage survey

📞 Call free: 0800 054 1524
💬 WhatsApp: 07733 019492
Or use the form below and we’ll come back to you fast. We cover London & Surrey.