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How much can I repair with one Flash Floor cartridge?

Damaged concrete never has a consistent measurement. It could be 1 inch wide on one end and 5 inches wide on the other, or 3 inches deep on one end and 6 inches deep on the other. The best answer we can provide is as follows:

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For cracks or control joints:

At ¾ of an inch wide by 1 inch deep, 1 cartridge can repair an average of 10-12 linear feet, or up to 106¼ cubic inches.

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For voids, spalls, holes, etc:

1 cartridge can repair a void that is 8½ inches x 5 inches x 2½ inches or up to 106¼ cubic inches. For a visual, this is about the size of 2 common house bricks.

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*These dimensions can increase or decrease depending on proper usage and installation of Flash Floor. Be mindful that you can lose Flash Floor in your repair to cracks or voids within the repair area. To prevent this you can create a "seal" as seen in this video: "Creating A Seal with Flash Floor"

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How big of an area can I repair with Flash Floor?

There are no size limitations. In over 20 years of use, Flash Floor has been trusted to repair everything from hairline cracks to large-scale damage—including voids big enough to swallow a pallet jack.

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What is the psi or strength of Flash Floor?

Just minutes after a repair has been made, Flash Floor cures to a similar strength as the surrounding concrete of 4500 psi.

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Why Flash Floor Outperforms Epoxy Repairs?

Traditional epoxy repair products often fall short when it comes to durability and ease of use. Epoxies are difficult to work with, require extensive surface preparation, and primarily act as surface-level void fillers. Their adhesive bond is often not strong enough to withstand long-term wear, and they tend to become brittle over time—leading to premature failure.
 

Flash Floor outperforms epoxies in every category. It’s easy to apply, requires minimal prep, and forms both a deep mechanical and adhesive bond by penetrating into the pores of the concrete. The result is a monolithic repair that’s built to last.

Want to see the full comparison? Check out more details here: Link 1, Link 2, and Link 3

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Do I have to use an aggregate (sand) with Flash Floor?

Yes, we highly recommend it. Adding an aggregate to your Flash Floor repair will do 3 things. 1) It will extend Flash Floor's volume (the amount you can repair) by up to double. 2) It balances the strength difference (balances the PSI) between Flash Floor and the concrete being repaired. 3) Adding the aggregate makes a stronger repair.

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Can I use my own aggregate (sand) with Flash Floor?

Yes, just make sure the sand is a medium grain size and is 100% dry. We recommend a medium grain size. You can find washed and dried sand or medium sand-blasting sand at some hardware stores, which are both viable options.

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Can Flash Floor Be Used in a Freezer, Cold Storage, or Cooler?

Yes! Flash Floor performs exceptionally well in cold environments, including freezers and refrigerated storage areas. While it may take slightly longer to cure at lower temperatures, it still delivers a strong, lasting repair.
 

Pro tip: Ensure the repair area is completely dry before application. For sightly faster hardening, keep both Flash Floor and the aggregate at room temperature until you're ready to use them.

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What is the shelf-life of Flash Floor?

When Flash Floor is stored properly in a dry, climate-controlled environment with an average temperature of 70° F, it is shelf stable for a minimum of 6 months.

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Is Flash Floor a stocked item or is there a lead time?

Yes, Flash Floor is a stocked item and we ship all orders within 24 - 48 hours.

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What should I know before purchasing a Flash Floor 2-gallon kit?

The Flash Floor 2-Gallon Kit (FF2G) is ideal for experienced users familiar with our cartridge system who need to make larger or deeper repairs. However, unlike cartridges, which simplify the process, the FF2G requires manual measuring at a 1:1 ratio in two separate containers, followed by thorough mixing of both parts for 15 seconds. Larger quantities of Flash Floor harden more quickly, reducing working time. Rapid thickening and faster curing can limit penetration into the concrete pores, proper bonding to the repair area, and achieving the correct aggregate-to-Flash Floor ratio. To avoid these issues, we recommend mixing small batches when using the FF2G or opting for our self-mixing cartridge system.

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For a 2-gallon kit, you’ll need approximately 75 lbs of 100% dry aggregate or 1½ FFAKs.

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Where can I get a copy of Flash Floor's Material Safety Data Sheet (MSDS)?

You can view and/or download a copy of Flash Floor's MSDS here.

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Can I use Flash Floor outdoors?

Yes, Flash Floor can be used for outdoor repairs. However, it is sensitive to UV exposure, so once the repair is complete, it should be painted or coated to protect the surface and ensure long-term performance.

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What Happens When Flash Floor Is Exposed to Consistent Sunlight?

When exposed to regular sunlight, two things can occur:

  1. The repaired area may discolor, turning a golden yellow.

  2. Prolonged UV exposure can cause a slight reduction in the repair’s strength over time.

 

To preserve both the appearance and durability of the repair, it’s recommended to apply a coating or paint once the repair is complete.

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