Drain jetting clears blocked drains with high pressure water fired through a specialist nozzle. It removes the entire build-up, grease, scale, silt, roots and debris, rather than punching a hole through it, so the drain stays clear for longer than after rodding. You need it when a drain is fully blocked, slow, smelly or keeps re-blocking. As a typical UK range, a domestic jetting visit often costs roughly £70 to £200, with prices varying by area and severity.
If you have been told your drain needs jetting, or you are weighing it against a set of rods from the DIY shop, it helps to know what the process actually involves and what it can and cannot do. This guide explains how high pressure water jetting works, when it is the right call, how it compares with rodding, and the one situation where jetting alone is not the answer.
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How drain jetting works
High pressure water jetting uses a powered pump, a long flexible hose and a specialist steel nozzle. The nozzle has a forward-facing jet that cuts into the blockage and a ring of backward-facing jets that do two jobs at once: they propel the hose along the pipe, so it can travel far further than any set of rods, and they scour the pipe walls clean as they go. The loosened debris is flushed back down the pipe and away with the flow of water.
That scouring action is what separates jetting from every other method. Rods or a plunger might restore a narrow channel through a fatberg or a wad of wipes, and the water starts moving again, for a while. Jetting strips the build-up off the full bore of the pipe, taking the drain back to something close to its original internal diameter. Different nozzles handle different jobs: standard nozzles for grease and silt, root-cutting heads for fine root intrusion, and flat-bottomed nozzles for flushing long runs of settled debris.
A typical domestic visit takes under an hour for a straightforward blockage. The equipment reaches the drain through a manhole, gully or access point, so there is no digging and usually no need to come inside at all for external blockages.
When you need drain jetting
Jetting is the workhorse of professional drainage, and these are the situations that call for it:
- A fully blocked drain. Water backing up at a gully, an overflowing manhole or waste refusing to leave the property. Jetting is the fastest reliable way to restore flow, and it is the core of our drain unblocking service.
- Grease and fat build-up. Kitchen waste lines and the drains serving them fur up gradually. Rods slide through fat; jetting cuts it off the walls.
- Recurring blockages. If a drain blocks every few months, the pipe has never been properly clean, or something structural is snagging debris. Jetting deals with the first; a camera survey afterwards settles the second.
- Slow, smelly drains. Sluggish flow and persistent odours usually mean a part-blocked pipe well before it fails completely. Clearing it early is cheaper than the flood later.
- Scheduled maintenance. Planned jetting keeps busy or vulnerable drains ahead of trouble, which is exactly what our drain cleaning visits are for, and it is standard practice for restaurants, holiday lets and care settings across the region.
- Before a survey or repair. Cameras need a clean pipe to inspect and liners need a clean pipe to bond to, so jetting comes first.
Jetting vs rodding: which clears it better?
Drain rods have their place, and plenty of Devon and Cornwall garages have a set. But the two methods are not equivalents, and knowing the difference saves wasted Saturday afternoons.
| Drain rodding | High pressure jetting | |
|---|---|---|
| How it clears | Pushes or breaks a hole through the blockage | Cuts up the blockage and scours the full pipe wall clean |
| Reach | Limited by rod length and bends, usually a few metres | Tens of metres, around bends, in either direction |
| Best against | Soft, recent blockages near an access point | Grease, scale, silt, wipes, roots and compacted debris |
| How long it lasts | Often temporary; residue left behind re-blocks | Longer lasting, because the build-up is removed |
| Risks | Rods can jam, unscrew or compact the blockage harder | Minimal on sound pipes when used by trained operators |
| Cost | Cheap if you own rods and it works | A professional visit, typically £70 to £200 UK-wide |
A fair summary: if the blockage is soft, shallow and near a manhole, rodding is worth one careful try. If rodding has failed, the blockage keeps returning, or the drain serves a kitchen, jetting is the tool the job actually needs.
What drain jetting typically costs
Nationally, a straightforward domestic jetting visit is often priced somewhere in the region of £70 to £200, a typical UK range rather than a quote, with the price moved by access, severity, region and whether it is an emergency or out-of-hours call. Bigger jobs, long runs, heavy grease or root cutting take longer and cost more.
We keep it simple: tell us what the drain is doing and we will give you a fast, free quote for our drain jetting service before anyone travels. If the blockage has already turned into water where it should not be, our emergency drainage cover runs across Plymouth, south east Cornwall and south and west Devon.
What jetting cannot fix
Jetting clears what is in the pipe. It cannot mend the pipe itself. If a drain keeps blocking because a joint has displaced, roots keep regrowing through a crack, or a section has begun to collapse, jetting will keep buying you weeks rather than years, and jetting a badly damaged pipe hard can worsen it. The tell-tale is a blockage that returns in the same spot no matter how well it is cleared.
That is the point to book a CCTV drain survey and see what the water keeps catching on. The survey either clears the pipe's name, in which case the answer is habits and maintenance, or it finds the defect, in which case a targeted repair fixes the cause instead of the symptom. It is the difference between paying for jetting every few months and paying once for the actual problem.
Frequently asked questions
What is drain jetting?
Drain jetting, or high pressure water jetting, clears and cleans drains by firing water through a specialist nozzle at very high pressure. Backward-facing jets pull the hose along the pipe and scour the walls, while the forward jet breaks up the blockage. It removes the whole build-up rather than just punching a hole through it, which is why jetted drains stay clear for longer.
How much does drain jetting cost in the UK?
As a typical UK range, a straightforward domestic jetting visit is often priced somewhere between roughly £70 and £200, with prices varying by area, access, severity and time of day. Emergency and out-of-hours work costs more. For your own drain, ask for a fixed quote up front rather than relying on national averages.
Is drain jetting better than rodding?
For most blockages, yes. Rods push a hole through a soft blockage close to an access point, but they leave residue behind and can compact debris or get stuck. Jetting cleans the full bore of the pipe over a much longer distance and handles grease, scale and silt that rods barely touch. Rodding still has a place for quick, simple clears near a gully or manhole.
Can drain jetting damage pipes?
Used correctly on a sound drain, no. Professional operators match the pressure and nozzle to the pipe, and domestic drains are jetted well within what the pipework tolerates. The risk arises with already-damaged pipes, which is why a camera check matters if a drain keeps blocking.
Can I jet my own drains with a pressure washer attachment?
Pressure washer drain attachments deliver a fraction of the flow and pressure of professional jetting equipment, and without experience it is easy to get the hose stuck or to flush debris into a worse position. They can freshen a short, lightly soiled run. For a genuine blockage, or anything recurring, professional jetting clears the pipe properly.
Blocked or sluggish drain? Jet it clear today
Professional high pressure jetting across Plymouth, south east Cornwall and south and west Devon. We clear the whole pipe, not just a hole through the blockage, and tell you honestly if something bigger is going on.
Call DCI Drainage on 07418 000 420 Fast, free quotes · hello@dcidrainage.co.uk
