Emecole Metro 30 ft. DIY Foundation Crack Repair – Polyurethane Injection Kit


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  • Fully equipped kit includes the components to repair non-structural cracks in poured basement walls, up to approximately 30 feet.
  • Features our premium and highly expandable polyurethane, providing the most user-friendly injection option. Includes three dual cartridges to accommodate crack widths from hairline thin to 1/16″ wide. Polyurethane is injected with the included dual dispensing gun.
  • Cracks are completely filled from front-to-back and top-to-bottom to form a flexible and watertight repair. Provides the ultimate stop gap against water and soil gases, such as radon.
  • The proven low pressure crack injection process is used by professional contractors and do-it-yourselfers to successfully repair basement wall cracks.
  • Three (3) dual cartridges of Emecole Metro 102 Premium Polyurethane
  • Choice of Surface Seal
    • Stays on wall – Three (3) dual cartridges of Emecole Metro 901 Surface Seal – cures in approximately one hour
    • Easily peels off the wall – Three (3) dual cartridges of Emecole Metro 322 Premium Surface Seal-n-Peel – cures in approximately 35 to 45 minutes
  • One (1) Emecole Metro 455 Blow Hole Repair syringe – for fast repair of pinhole leaks while injecting
  • Manual dispensing gun
  • Fifty (50) surface ports
  • Ten (10) corner ports
  • Static mixing nozzles and retaining nuts
  • Four (4) injection hose assemblies
  • Also included are rubber gloves, safety glasses, wire brush, mixing sticks, drop cloth, plastic trowel and written instructions.

Step-By-Step Instructions

Emecole Metro Support Video Video Instructions

Informational Document Written Instructions

Most Basement Wall Cracks are Non-Structural Cracks

Most inquiries we receive from homeowners describing their specific crack in need of a repair fall in line with the characteristics of a non-structural crack. A non-structural crack develops from foundation settling or concrete shrinkage (with commonly happens for several months after being poured). These cracks tend to be thin, anywhere from hairline to 1/8″ wide, and are vertical. While such cracks do allow in water and soil gases, such as radon, they do not pose a structural risk to the foundation.

For these non-structural cracks, polyurethane is the injection option we recommend. The included polyurethane with this kit, Emecole Metro 102 Premium Polyurethane, expands up to 20 times its original state of volume upon being injected into the wall. This high expansion capability makes injection user-friendly while providing the best opportunity to completely fill the crack, ensuring that the repair completely keeps out water and soil gases, including radon.

Repairing Cracks that Are Structural

Cracks that form due to foundation movement (i.e. settlement, soil pressure or freeze/thaw cycles) may compromise the basement wall if left unaddressed over time. These cracks, known as structural cracks, are usually 1/8″ wide or greater and are more likely to be diagonal, horizontal, jagged or stair-stepped.

We do not recommend our premium polyurethane option for repairing structural cracks since it is not as strong as epoxy. The added strength of our premium epoxy fuses cracks back together, resulting in a very strong and watertight repair. For repairing such structural cracks, we recommend the Emecole Metro 30 ft. DIY Foundation Crack Repair Epoxy Kit.

Frequently Asked Questions

If the basement wall crack is high enough to raise above grade, does the exterior of the crack need to be covered from the outside?

Yes, any cracks that are exposed on the outside because they are above grade will need to be covered with your included Emecole Metro Surface Seal, otherwise, the injected polyurethane will leak out, potentially compromising the repair in addition to also wasting material.

A repair to my basement wall crack was previously attempted with the use of hydraulic cement and has since started to leak water again. Can your product still be used to rectify the previous repair attempt?

Yes. The use of this kit requires access to the crack, so a few extra steps will be necessary. The hydraulic cement should be removed by chipping and grinding in order to gain access to the crack. There are some scenarios where such scenarios is more complicated. For such situations, we advise you get in touch with an Emecole Metro technical support expert for additional ideas.

Can this product be used in the middle of winter or when the temperature outside is below freezing? What is the coldest (or warmest) temperature your product will work in?

The ideal temperature for the use of the materials packaged in this kit is between 40 and 100 degrees Fahrenheit. Assuming that the basement is heated, any outside temperature should not impact the performance of the chemicals during the basement crack repair process.

Additional Information:

PDF Document Prop 65 Warning (California)