Crack Repair FX

Crack Repair FX


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Crack Repair FX is a very fast setting, high strength ultra low viscosity concrete repair material. Specifically designed to set quickly enough for heavy loads in 10-15 minutes.


Crack Repair FX is a very fast setting, high strength ultra low viscosity concrete repair material.

This is a two-part, hybrid urethane system designed for rapidly rebuilding deeply spalled or damaged concrete surfaces, broken control joints, and repairing damaged concrete rapidly, even in cold conditions.

Crack Repair FX can accept heavy loads in as little as 10 – 15 minutes.

Available in 1 and 2-gallon kits.

Ultra-low viscosity formula allows for easy application

  • Ultra-low viscosity formula allows for easy application.
  • Xtreme quick return to service.
  • Use on concrete floors where cracks, spalls, and other damages are present.

When time is a factor, Crack Repair FX has you covered! Cracks, holes, and concrete spalling shouldn’t hold you back from completing your metallic or flake floor on time. Repair it quickly with Crack Repair FX knowing your concrete repairs will be as good as new.

Solids Content 58%
Pot Life 2 Minutes
Tack Free 4-5 Minutes
Foot Traffic 10-15 Minutes
Dry Appearance Light tan with some gloss
VOC Content Less Than 431 Grams/Liter mixed


Caution: Only mix in small workable quantities.

Mix Part A and Part B in separate containers with a stir stick, low-speed mixer, or vigorously shake container prior to mixing to ensure uniform distribution of all ingredients. Material may separate during long term storage. Proper mixing is pertinent to application success. In equal parts (1:1 ), mix Part A and Part B using a clean, dry mixing container.

Stir contents for approximately 15-30 seconds. Mix contents in close proximity to where the material will be used. It is common to only mix 8-16 fluid oz. at one time in a disposable paper cup with a stir stick or tongue depressor. DO NOT THIN!

Coverage rates will vary. For reference, 1 gallon will fill 324 feet of crack at 1/4 inch wide by 1/4 inch deep.

*Coverage rates will vary depending upon the damaged areas’ width and depth, surface porosity, texture, and application method. Excessive build-up should be avoided.

Expected workable pot life after mixing Part A and Part B is approximately 2 minutes with a temperature range of 70°F – 80°F at roughly 50% relative humidity. Crack Repair FX may set slower in lower temperatures.


Mix small amounts (8-16 fluid oz.) in a flexible container for easy dispensing.

Pour directly into the crack or over the sand in the crack base. If necessary, work the repair area quickly with a small putty knife. Allow material to rise to just above finished grade and allow to set. Let material set completely (typically 10-15 minutes), and grind smooth using a diamond cup wheel on an angle grinder.

If necessary, apply again in low areas for a seamless finish. Note that deeper areas with more volume of Crack Repair FX should be allowed additional time to sit before coating to prevent solvent entrapment and bubbles in the coating applied over the Crack Repair FX.

Caution To First Time Users: Crack Repair is a very fast setting product. We recommend testing in a separate application to become familiar with how Crack Repair FX works.


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