Resin Injection Resin Injection

Resin Injection

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At CSC Services we have worked for many years providing reliable and effective resin injection leak sealing solutions across the UK, dealing with large water and power companies such as EDF Energy.


Leaks and water penetration can appear in reinforced concrete through carbonation, causing steel to rust and expand, which inevitably cracks the concrete encasing it. Other reasons might be movement or poor construction, causing both narrow cracks and large, dangerous cracks in the concrete structure.

Crack injection

Epoxy Resin Injection can be used as a structural repair to cracks in concrete. By filling these cracks, the resin injection provides a waterproof seal to stop further water penetration.  This system restores the original strength to the concrete and seals in the reinforcing – preventing further damage from moisture.

The polyurethane-based injection resins we use at CSC Services are very fast-acting on contact with water and can halt the flow of liquid quickly, forming a robust seal that stops further water ingress and damage.


Correct surface preparation is paramount to the effective use of resin injection.  Thorough specialist cleaning techniques and air are used to remove all contaminants from the concrete before the resin injection is introduced into the structure through specially-prepared inlet ports or drilled holes that flow into the cracks.

There are two key methodologies to resin injection, depending on the specific project requirements.

If the main concern is to stop water leakage then a polyurethane resin injection would be used, with foam being used in the instance where material may leak out the back of the crack due to its hardening properties when coming into contact with water.  You can view a leak sealing case study at Lynemouth Power Station here.

Where structural repair is more important, and the repaired area must be at least as strong as the concrete it is repairing, then an epoxy resin would be used.  There is a wide range of viscosity for epoxy resin and it has a high strength property, often greater than concrete.  Epoxies do take longer to cure, meaning very small cracks benefit from the ongoing flow of the resin prior to hardening.

The following video shows the process being carried out to waterproof a basement structure and you can view a recent case study for Cemex on Resin Injection:

Experienced Team

Resin injection repair is often part of a complete concrete repair system, including waterproofing and crack repair.  At CSC Services we provide repairs services and protective coatings to structures across the UK water sector, in nuclear power stations, public sector buildings such as hospitals and prison buildings, and across UK infrastructure including bridges, tunnels, culverts and sewers.

Structures that we are experienced in working with for leak sealing include:

  • Service Reservoirs
  • Water Towers
  • Aqueducts
  • Water and waste water treatment plants
  • Storm tanks
  • Tunnels
  • Car Parks
  • Bridges
  • Culverts
  • Industrial plants
  • Basements

We will first assess the area to be sealed using specialist techniques such as pressure injected materials, before recommending a system of products and application processes to fix the crack/leak with an effective yet value result.  Our teams all carry CSCS cards, EUSR Water cards, DOMS, Confined Space Certificates and are BSVR (baseline security vetting register) and CTC (counter terrorism check) vetted as a minimum.

 Call us on 0191 410 3444 today for help or advice.   

Latest Projects

We have used resin injection on a number of different projects and applications, including;

  • Waterproofing a machine pit at the Komatsu manufacturing plant (shown below)
  • Repairing a  structural leakage problem at a quarry site water treatment plant (see case study here)
  • Eliminating water ingress to floor joints within the rail offloader area at Lynemouth Power Station (see case study here)
  • Waterproofing a basement structure in Newcastle (view video above and case study here.


Client Feedback:

CSC Services provided a fully comprehensive service and solution to an issue that we have had for some time. We had an issue of water ingress into one of our fixture holding pits which was creating a health and safety issue. CSC services eradicated the water ingress issue without any additional civil work, with the fixture still in position. In terms of quality and cost CSC Services have provided a perfect solution, I would not hesitate to use them again in the future. (Scott Atkinson, Production Engineer, Komatsu)