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High-pressure drain jettingSewer jetting down to a clean pipe wall

With high-pressure drain jetting, Bosmans cleans your sewer from the inside: grease, sand, silt and deposits disappear and the pipe gets its full bore back. Ideal for a slow drain, as maintenance and for businesses, restaurants and owners' associations.

  • Usually on site within 30 to 90 minutes
  • Available 24/7, including weekends
  • To industry standards, 2-year guarantee
  • Rate known in advance
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9.7/10 · 1,123+ reviews

14+ years in business
24/7 emergency service
On site in 30 to 90 min.
42 certified engineers

High-pressure drain jetting

High-pressure drain jetting by certified drain engineers

Unblocking and cleaning sound like the same thing, but there is an important difference. When unblocking, the engineer makes a passage through a plug so the water drains again. With drain cleaning, the whole pipe wall is jetted clean along its full length. Grease, silt, sand and soap scum that have built up over the years disappear. The result is a pipe with its original bore restored, which is slower to silt up again.

Bosmans cleans drainage with professional high-pressure equipment, from house connections to shared pipes in apartment buildings and commercial premises. For each pipe, the engineer chooses the right nozzle and pressure, matched to the material and the type of build-up. For restaurants, landlords and owners' associations we offer preventive jetting at a fixed time, so the drain stays clear all year. You hear the rate in advance.

+31 85 200 93 27
Bosmans drain engineer: high-pressure drain jetting

When to call us

Familiar situations

A drain that keeps getting slower

If your drain is slowly but surely getting slower without an actual blockage, the pipe is filling up with deposits. A clean restores the full bore before a blockage forms.

Restaurants and commercial kitchens

In a kitchen with a lot of grease, the drain to the grease separator silts up quickly. Regular sewer jetting keeps the pipe open and lets your kitchen keep running without interruption.

Before and after a survey or relining

A CCTV survey only gives a good picture when the pipe is clean, and a liner only bonds well to a cleaned wall. That is why a thorough clean often comes before a survey and relining.

After building work

Building work often sends sand, cement residue or tile adhesive into the drain. These harden or sink to the lowest point. High-pressure jetting flushes them away before they permanently narrow the pipe.

Our approach

How the engineer works

We work with an inspection camera, leak detection, spring cable and high-pressure equipment, in line with KIWA BRL K10014. You know in advance where you stand.

Rate

Drain jetting at Bosmans costs a call-out from 45 euros plus work per hour. How much time is needed depends on the length of the pipe and the degree of build-up. You hear the rate in advance on the phone. For periodic maintenance we agree the planning and frequency beforehand.

+31 85 200 93 27
  1. 1

    Assessing the pipe and material

    The engineer first checks what kind of pipe it is: PVC, clay, concrete or cast iron, and what diameter. He matches the pressure and nozzle to that, so the pipe wall gets clean without damage to older pipes.

  2. 2

    Nozzle with rear-facing jets

    The hose goes into the pipe through the inspection chamber or the rodding eye. The nozzle's water jets point back at an angle. This pulls the nozzle forward and flushes the debris towards the chamber.

  3. 3

    Pulling back in passes

    The engineer pulls the hose back slowly and in stages, so every metre is flushed several times. Loosened debris is carried to the main sewer or collected and removed at the chamber.

  4. 4

    Root cutting and hard deposits

    For root ingress, limescale or hardened residue, the engineer uses a rotating head or root cutter. It cuts loose the roots and hard deposits, after which the pipe is thoroughly flushed again.

  5. 5

    Final check

    After cleaning, the engineer runs water through the drains and, where useful, checks with the camera. You hear what he found and how often cleaning makes sense for your situation.

How drain jetting works

A high-pressure unit pumps water at high pressure through a flexible hose to a nozzle. That nozzle usually has one jet facing forward to loosen debris and several jets angled backwards. The rear-facing jets provide the thrust that pulls the nozzle along the pipe and at the same time scour the pipe wall clean. By choosing the right combination of nozzle, pressure and water volume, the engineer can clean both a narrow internal pipe and a wider external drain effectively.

With older clay or concrete pipes, with cast iron that has rusted on the inside, or where there is already cracking, the engineer works with adjusted pressure and a gentler nozzle. The aim is always a clean pipe, not the highest possible pressure. That is why knowledge of materials matters at least as much as the equipment, and if in doubt the engineer first checks the pipe's condition with the camera.

How often to clean your drains

For an average home with a well-laid sewer, periodic cleaning is usually not needed. That changes for pipes that are heavily used, that carry a lot of grease or sand, or whose material and layout make them prone to build-up. A few guidelines from practice:

  • Restaurants and commercial kitchens: often several times a year, depending on the amount of grease
  • Apartment buildings: kitchen stacks every few years or when there are signs
  • Homes with trees close to the pipe: once a year, to stay ahead of root ingress
  • Older clay or concrete pipes with slight sagging: periodically, to keep build-up away

A CCTV drain survey after the first clean gives the best picture of how quickly your pipe gets dirty again, and so of a suitable interval. That way you do not clean more often than needed, but you do clean in time to stay ahead of a blockage. The engineer records the advice, so you can refer back to it at the next appointment.

Drain cleaning for businesses and owners' associations

For businesses, restaurants, landlords and owners' associations, a drain that always works is the foundation. With preventive jetting, you keep a blockage from shutting down your kitchen at a busy moment or inconveniencing residents. Bosmans schedules the cleaning in consultation with you, for example outside opening hours or at a quiet time for residents. For restaurants with a grease separator, we jet the inlet pipe; emptying the separator itself is usually handled by a specialist collection company.

How your pipe stays clean after cleaning

A clean pipe stays clean longest when little goes into it that can settle. Do not pour grease or oil down the sink, use strainers in the shower and kitchen, and flush only toilet paper. Make sure chamber covers close properly, so no sand or leaves wash into the external drainage. During building work it pays to cover the drains and not pour cement water or tile adhesive into the chamber. With these habits, you will enjoy a full-bore pipe for a long time.

Related services

Also useful to know

CCTV drain surveySewer unblockingDrain relining

Good to know

Frequently asked questions about high-pressure drain jetting

Is your question not listed? Feel free to call us, we will think along with you straight away.

+31 85 200 93 27
What is the difference between unblocking and cleaning?

Unblocking makes a passage through the blockage so the water drains again. Cleaning jets the whole pipe wall clean, so the pipe gets its full bore back and is slower to silt up again.

Can high-pressure jetting damage my old sewer?

An experienced engineer matches the pressure and nozzle to the material and condition of the pipe. If in doubt, he checks with the camera first. That way even an older clay or concrete pipe is cleaned safely.

Is preventive sewer jetting worthwhile?

Yes, especially for restaurants, apartment buildings and homes with trees near the pipe. With preventive jetting you keep the pipe clean and avoid a blockage at an awkward moment.

How long does drain cleaning take?

For an ordinary house connection, the engineer is usually done within a few hours. Long pipes, heavy build-up or roots that need cutting take more time. The engineer gives you an estimate in advance.

Do I need to prepare anything?

Make sure the inspection chamber and any rodding eyes are accessible and that no water is run during the work. For an owners' association it helps to inform residents in advance.

Service area

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Contact

A drain engineer straight away

For emergencies, call our 24/7 emergency line directly. For a non-urgent appointment, such as a CCTV drain survey or preventive jetting, you can also fill in the form. We will get back to you quickly.

+31 85 200 93 27

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