Polyurethane Injection Sydney



CPR Services is your leading Concrete Polyurethane Injection Service in Sydney. Our 150+ years of combined experience in Concrete Crack Repairs, including concrete polyurethane injection, puts us at the cutting edge of polyurethane injection technologies, equipment and methods.

Widely recognised as the most called upon Polyurethane Injection Concrete Crack Repair Service in Sydney and regional NSW, each region’s climate may vary from location to location, and so that we can manage future polyurethane crack injection workloads and schedules, we need to understand each client in NSW and how it affects polyurethane injection and concrete repair work.

Sydney strata and residential structures, for example, are more often in urgent need for polyurethane crack injection during the wet season. That means for us to stay at the forefront of all our concrete crack repair and polyurethane crack injections across Sydney and NSW, we need to understand each climate and what might cause its peak season.

There are two effective methods of Concrete Crack Repairs which we use in repairing cracks in concrete structures, Polyurethane Injection and Concrete Epoxy Injection



Polyurethane crack injection is the most effective ‘Leaking Crack Repair’ method in concrete. The use of polyurethane — sometimes referred to as urethane or grout – The concrete crack injection is very popular due to its versatility of low viscosity polyurethane injection resins for leak sealing making it the most effective leaking crack repair solution. Polyurethane crack injection is used in civil, commercial and residential applications. CPR Services are frequently engaged by a wide spectrum of clients to carry out Concrete Crack Repairs throughout Sydney and regional NSW and on all types of properties and structures. We are well equipped to handle Leaking Crack Injection regardless of the size of the project.


Polyurethane Injection Concrete Crack Repair for Water Ingress.

Water ingress is when water leaks into a building or a structure through floor and wall cracks. This is often a serious defect as it can lead to weakening concrete structures creating more serious problems, both, immediate and in the future. If your building or structure is affected by such leaks, we recommend that you contact us to discuss the repair by way of Polyurethane Injection. Some of the concrete repairs and protective processes Polyurethane Injection is best suited to address and remedy include:

  • Sydney Basement Wall Crack Repairs 
  • Leaking Basement Ceilings and Floors in Sydney
  • Floor and Wall Crack Repairs in Sydney
  • Waterproofing Including Water Proofing Sydney Car Parks
  • Leaking Balcony Repairs Sydney
  • Leaking Cracks commonly noticed in Sydney Basement and Underground Parking Spaces in Civil and Commercial Building;
  • All other cracks through which water may be leaking in Sydney


Polyurethane Injection / Concrete Leaking Crack Injection in Civil Constructions.

Polyurethane Injection is the most widely used method in concrete crack repairs due to its flexibility in application and its reliability in repairing cracks and damage in concrete structures. In addition to its efficiency as a reliable concrete crack repair solution, Polyurethane P Polyurethane Injection is also a cost-effective method in repairing leaking cracks in major concrete assets.

Applications include:

  • Dams and Civil Water – Stop Leaking Dams and Under Water Tunnels with Polyurethane Injection cement dam sealer. If the question involves underground water tank leakage solution or concrete underground, then the answer is CPR Services Sydney. This includes water treatment plants, town water supply, water pumping stations, channels, canals diversion tunnels, permanent plugs, dam walls, weirs and more.
  • Sewage Treatment Plants – including high voltage electrical pits, manholes, chemical storage areas
  • Tunnels – In addition to Polyurethane Injection, Tunnel work often means concrete protection, consolidation grouting in tunnels
  • Underground Structures – Including underground water tank leakage solution and other concrete underground structures like concrete garages.



In Concrete Epoxy Injection Crack Repairs, we use the most advanced and effective Concrete Epoxy Injection Systems to ensure that the concrete crack repair is always carried out correctly, effectively and successfully. CPR Services proudly stands out as the most reliable Structural Concrete Repair Provider due to our ability to deliver effective concrete crack repair solutions using only the best and most reliable Concrete Epoxy Resins available to the industry. Additionally, we are a preferred installer/applicator for the largest epoxy resin suppliers in Australia and are continually referred to clients and authorities requiring the highest standards from those epoxy resin suppliers. In Sydney, our clients range from large Commercial and Civil Buildings owners and managers to Residential and Domestic private properties and homes.
CPR Services proudly uses these Concrete Expoxy Injection systems on bridges, reservoirs, roads, tunnels, floor and post-tension slabs and any other load-bearing concrete asset.


Epoxy Crack Injection Process

Epoxy Crack Injection is typically used on horizontal, vertical, and overhead cracks where conventional repair methods cannot penetrate or are too cost-prohibitive. As a first step in the Crack Repair process, the cause of the crack must be examined and determined. Depending on the level of crack damage, other crack methods may be used. For example, if the crack does not compromise the structural integrity of the structure, injection with polyurethane grouts or other non-structural materials may be a more suitable choice to fill the crack (ie Leaking, flexing etc). Before implementing the crack repair, the conditions that caused the crack must first be corrected. In some cases, structural cracks may be too damp and cannot be dried out, in such cases, a moisture tolerant resin is often used. Alternatively, if the crack is non-structural a low viscosity polyurethane hydrophilic resin would achieve the best result.

Epoxies for crack injection are available in a range of viscosities, from ultra-thin to paste-like are used to accommodate cracks of different widths. The main advantage of epoxies over other repair products is their high compressive strength. That’s why epoxies are the only choice for cracks requiring structural repair.