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Polyurethane Crack Injection

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Polyurethane Injection - Foundation Repairs using Polyurethane Foam

Montreal, West Island, Laval & South Shore

Polyurethane crack injection is specialized methodology designed for sealing leaks through cracks, rock pockets, expansion and control joints in concrete structures. The resin and accelerator mixture reacts when it comes in contact with water and forms a micro cellular closed cell gasket with excellent adhesion and long-term flexibility.

Polyurethanes are fast-setting, elastomeric and most effective in sealing and waterproofing a crack that will be undergoing slight movement from seasonal temperature changes.  One of the determining factors in deciding to use Polyurethane is if there is concern about leakage from the back of a crack.  Another benefit of their fast setting foam attributes is that it expands and hardens within minutes of injection in the crack.  This reduces the likelihood of it flowing out the back.  While adding almost no structural strength, most residential applications don't require it.

When to use Polyurethane to seal a foundation crack. Strengths & Limitations

  • • Flexible, allows for natural movement of concrete from thermal shrinkage and expansion.
  • • Repairs wet or even leaking cracks.
  • • Waterproofing, Polyurethane has water repellant properties.
  • • Fills large cracks, Polyurethane expands over 20 times its volume.
  • • Non-structural
  • Polyurethane versus Epoxy Crack Injection

    Contrary to popular thought, one product is normally not better than the other.  A typical repair requires an understanding of the environment and type of crack that the foundation repair contractor is trying to close and permanently seal.  If the foundation is actively leaking, Polyurethane Foam is usually the best choice because it activates in water which is why it is predominantly used in exterior crack injection. If structural crack repairs are required, use an Epoxy Resin.  Epoxies only work in a dry environment.   As your foundation contractor, Akton Injection can properly evaluate the needs of your home and use the appropriate product.

    Polyurethane Injection Products

    Specton Flex F1000
    Specton Rapid H100
    Specton Ultrathin H40

    Learn more about Epoxy Injection

    Concrete Epoxy Injection is a system for welding cracks back together using an Epoxy Resin. The resin restores the original strength of the concrete. Structural restoration of concrete by epoxy injection is very often the only alternative to complete replacement. Epoxy injection protects rebar and stops water leakage. To ready more regarding Epoxy uses in foundation repairs please visit our Epoxy Crack Injection page.

    Foundation Waterproofing

    Since 1979 Akton Injection has specialized in the repair of concrete and concrete block foundation cracks.  Just give us a call and our team of foundation repair specialists will work with you to find the best product and most cost effective method to achieve a successful, permanent foundation repair.

    Call one of our representatives today for a FREE foundation repair quotation!



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