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DIY Foundation Crack Repair Kit | Urethane


Repair cracks in poured concrete walls quickly and permanently. A complete repair kit – all you need is a caulking gun. Premium, 2-component expanding urethane injection foam.

  • NO DRILLING REQUIRED – The low-pressure injection method eliminates the need for drilling.
  • HAIRLINE CRACKS – Low-viscosity, 2-component, injection urethane is suitable for the repair of hairline cracks.
  • NO NEED TO EXCAVATE – Save serious money by repairing the crack from the inside.
  • NO SPECIAL TOOLS REQUIRED – Use a standard caulking gun to inject.
  • PERMANENT – Prevents water seepage permanently! Imperious to water vapor, soil gases, and even radon.



Product Description

Complete crack injection kits for do-it-yourself application by homeowners. All you need is a standard caulking gun and a crack in your poured concrete wall!

The No.1 Crack Injection Kit for homeowners for over 25 years.

Suitable for both hairline cracks and wide cracks (up to 1/2″). Can seal up to 10 feet of cracks in poured concrete.

RadonSeal standard DIY crack repair kit uses polyurethane foam that forcefully expands to fill the full depth and length of the crack. Polyurethane injection foam adheres to wet or damp surfaces inside the crack — there is no need to wait until the crack dries out.

If structural strength is needed, use our Epoxy Crack Injection Kit.

If the appearance of the wall is important, use the Easy-Peel Injection Kit with a special surface sealer that can be easily removed.

For more information visit the DIY Crack Injection Kits webpage.

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