Diagnostic Pressure Jetting

High-Pressure Drain Jetting London

High-pressure drain jetting is a precise, diagnostic cleaning method for London's drainage systems. Our engineers utilise high-velocity water jets, guided by prior CCTV survey data, to remove grease, scale, silt, and root ingress from pipes ranging from 50mm to 1000mm diameters.

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This is not a generic cleaning service. The jetting process is initiated only after a full CCTV survey has identified the exact nature and location of the blockage, allowing for targeted application and verification of clearance.

The procedure delivers documented evidence of the pre-existing defect and post-clearance condition, critical for landlords, commercial property managers, and conveyancers requiring robust records for compliance, insurance claims, or property transaction due diligence.

Pricing is based on a fixed survey and jetting day rate. A formal quotation is provided only after an initial diagnostic CCTV survey has been conducted and the scope of jetting work is defined.

What you get

CCTV-Survey Informed: Jet pressure, nozzle selection, and entry point are determined by prior CCTV defect analysis (e.g., WRc-FN blockages).
Verifiable Clearance: Post-jetting CCTV re-inspection provides documented proof of clearance for your asset records.
Insurance-Grade Documentation: Comprehensive reports detail the defect classification, jetting methodology, and final pipe condition.
Precision Targeting: Jet lances navigate bends and junctions to directly address the diagnosed obstruction point.
Safe for Pipework: Correct pressure calibration, based on pipe material and condition, prevents damage during descaling.
Broad Applicability: Effective on common London drainage issues: FOG (fats, oils, grease) in commercial kitchens, silt in combined systems, and root mass in clay pipes.

How it works

A method, not a guess

Diagnostic CCTV Survey

A comprehensive CCTV survey is conducted first to classify the blockage (WRc-FN code), identify its location, and assess pipe condition to plan the jetting intervention.

Method Selection & Access

Based on the survey, engineers select the appropriate jetting unit, nozzle type, and pressure. Access is gained via the nearest available rodding point or chamber.

Controlled Jetting Procedure

High-pressure water is applied progressively, with the jetting lance fed through the pipe. The process dislodges and flushes the diagnosed blockage back to a collection point.

Verification & Reporting

A post-clearance CCTV survey is performed to verify the result. A detailed report is issued, comparing pre- and post-jetting conditions with defect classifications.

Questions

Jetting FAQs for London homeowners

Why is a CCTV survey required before jetting?

A pre-jetting survey provides a technical diagnosis, classifying the blockage (e.g., WRc-FN). This determines the correct jetting pressure, nozzle, and approach, ensuring a targeted, effective clearance and preventing damage to unknown pipe defects.

What evidence do you provide for an insurance claim?

We provide a full report including pre-jetting CCTV stills with defect codes, a description of the jetting methodology used, and post-clearance CCTV evidence verifying the pipe is now clear and flowing. This forms a complete chain of evidence.

Can jetting damage my pipes?

When performed correctly based on a prior CCTV assessment, jetting is safe. Our engineers calibrate pressure according to the pipe material (clay, plastic, concrete) and observed condition from the survey, avoiding excessive force on compromised sections.

Is jetting effective for tree root blockages?

Yes, high-pressure jetting with root-cutting nozzles is highly effective for severing and flushing away fine root masses within pipes. However, it does not treat the source; a follow-up root barrier installation is often recommended, which we can advise on.

Do you serve commercial properties in London?

Yes, our diagnostic jetting service is extensively used for London's commercial kitchens (FOG clearance), retail premises, and office blocks. We provide the detailed maintenance records and compliance documentation commercial landlords and managing agents require.

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