Repairing sewers and manholes, without digging up the street.
C4Sewer renovates sewers, manholes and underground structures from the inside. Less disruption for residents, shorter site times and a repair that lasts for decades.
- Aquafin-approved and certified
- Certified injection specialist
- VLARIO-trained
certified
One point of contact for every underground repair
From a single crack to an entire pipe section: we choose the technique that suits the damage, the diameter and the surroundings.
Manhole renovation
Coating, GRP renovation and geopolymers. Our speciality.
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Local repairs
Local trenchless repair with stainless steel sleeves. Link-Pipe is available exclusively through C4Sewer.
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Pipe relining and shaft liners
A new, seamless pipe inside the existing pipe or shaft.
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PU injection and soil stabilisation
Carried out by our own Aquafin-approved team: sealing leaks, filling voids and stabilising subsided floors.
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Products and advice
Doing the work yourself? We sell injection resins, water stops and epoxy, with advice from a certified contractor.
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Homeowners and businesses
Rainwater tanks, pipes, basements and company drainage. Without excavation.
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From degraded to watertight again
Degraded manholes cause infiltration, odour nuisance and subsidence. We renovate them on site, without excavation.
From municipality to homeowner
Municipalities
Sewer management with minimal disruption to residents, shops and traffic.
Sewer operators
Experience on sites for Aquafin and other sewer operators, in treatment plants and pumping stations.
Contractors
Reliable subcontractor for relining, injection and manhole renovation.
Homeowners and businesses
Rainwater tanks, basements, house connections and company drainage. See the options.
From first question to handover
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Site visit and diagnosis
We assess the situation on site and review camera footage and measurements.
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Advice and quotation
A clear proposal with the best-suited technique, schedule and price.
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Execution
Our own crew carries out the work in line with confined-space safety rules.
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Handover
Inspection of the result and a photo report of the work carried out.
From residential street to treatment plant
Since the takeover in 2025, we have worked on sites across Belgium and the Netherlands.
A young company with expertise from below ground
Since 2025, Kevin Weygers has been at the helm of C4Sewer. He brought a modern approach: short lines of communication, own crews and equipment, and a clear focus on quality, safety and sustainability.
C4Sewer is Aquafin-approved and certified. Our team follows specialised training in sewer works and underground infrastructure.
- Approval for joint injection
- Safety watch training
- Cutting robot and local repairs
- Manhole renovation
- Techniques for underground structures
- Sector training in construction