Flex Shot Review – Does It Really Work? (Detailed Review)

Flex Shot is a pressurized can of rubber sealant they say will replace your messy caulk gun and give you a perfect waterproof seal every time.

About Flex Shot

The makers of Flex Seal® bring you Flex Shot® – the revolutionary super thick rubber sealant that caulks, bonds and seals virtually everything. 

Flex Shot is easy to use – giving you a perfect bead every time. And because it’s so thick, you can fill huge cracks and holes, stopping the toughest leaks instantly!

Flex Shot is the neat and clean way to make repairs with pinpoint accuracy. Flex Shot comes out nice and thick, clings to any surface, then turns into a stretchy rubber seal that’s virtually indestructible.

Unlike regular caulks that dry out, shrink and crack, Flex Shot expands and contracts making everything completely waterproof. The free extension tube makes even hard-to-reach repairs perfect every time! For all your DIY projects, get Flex Shot in every color!

How Do I Use Flex Shot?

Flex Sho is so easy to use! Just follow these simple steps:

1.  All surfaces must be clean, dry and free from dirt, grease and oil.

2.  Hold can at a 45-degree angle, push against the nozzle and apply directly to the area to be treated. For a perfect bead, apply in a steady, even motion. Adjust your speed to control the thickness of the bead.

3.  If further tooling is required, complete within 5 minutes. Remove excess sealant immediately with a dry paper towel.

4.  After using, extend a small amount of material beyond the end of the nozzle. This will cure and form a seal for the remaining material. Pull out this cured plug when you are ready to use again.

How long does it take for Flex Shot to dry?

Flex Shot dries much faster than many other caulks and sealants. Flex Shot forms a tack- free skin in 20 minutes. Length of full cure time depends upon factors such as; temperature and humidity. It will become rubbery solid in about 24 hours.

Can I smooth and/or work with Flex Shot once it has been applied?

Yes, you can smooth Flex Shot out with your finger and work with the product as desired! However, if you want to make any adjustments to the product, try to make these adjustments immediately after the product is applied, before it starts to dry. Remove any excess Flex Shot immediately, with a dry paper towel.

Can I apply Flex Shot to a wet surface?

It’s best to apply Flex Shot to a clean, dry surface; however, Flex Shot can be applied to a wet surface but not in standing water.

Does Flex Shot Really Work?

There is a great number of testimonials left by real users of the product online. Most of them depict positive opinions of people who report that using this product helps not only to seal any surface but also to prevent mildew and mold.

It can adhere to any material that is not greasy or oily, including tile, porcelain, metal, fiberglass, glass, wood, stone, granite, marble, upholstery, fabric, and paper.

Flex Shot can be used to fix broken ceramics too. It is said that the substance inside the bottle is nice and thick, which allows you to plug holes and fill large cracks completely.

There is even a demonstration video on the official website of the company that shows how quickly the product can seal a large hole in a 5-gallon bucket and no water is escaping. Flex Shot is said to dry in just 20 minutes.

The surface is completely ready to usage in 48 – 72 hours. It is much faster than with most sealants.

Dry Flex Shot turns into strong rubber that can both contract and expand. Due to this feature, it can be used on showers, sinks, tubs, windows, tiles, skylights, gutters, roofs, autos, RV’s, boats, campers, ducts, PVC, decorative items, etc.

It is promised not to yellow, fade, crack, dry, or deteriorate because of household cleaners. The product can withstand temperatures from -76 degrees Fahrenheit to 350 degrees Fahrenheit. However, Flex Shot should not be used to fix tires or anything under extreme pressure.

The product has not been tested on mobile drinking water systems. Avoid painting over the seal. It is mentioned that one can of Flex Shot is enough for 50-100 linear feet. This depends on the bead’s thickness.

Most users are pleased with the fact that Flex Shot comes with one can Flex Shot (Almond, Clear, White, or Black), one extra can, one reusable extension tube, and tube free and one can Flex Seal (extra shipping is required).

According to most user reviews, the product is very easy to use, especially compared to a no drip caulk gun. The letter tends to ooze out after you stop trigger, so the material is wasted. It is easy to control the flow of Flex Shot and the process of sealing gets much more enjoyable.

Besides, you can easily seal the tip of the bottle after use. Just let a small amount sealant out the top and let it cure. This plug can be easily pulled out when you need to use the product again. Most people report that Flex Shot works better for sealing than a common caulk gun.

What users also appreciate is that the product is tolerant moisture on the surface that is sealed. The official Flex Shot website is very informative. It contains marketing hype and offers an opportunity of ordering the product. Remember that water will not clean Flex Shot off your fingers and it is not paintable.

It is more costly than traditional silicone in tubes but it is worth the money. Overall, most customers like the product. 


Flex Shot costs $19.99 plus $9.95 shipping. They also do not let you opt out of the second “free” Flex Shot for another $9.99 processing. This also includes a “handy can” of Flex Seal. This brings your total to $39.93.

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