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Flex Glue Review: Does it Really Work?

By John

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Looking for real Flex Glue reviews?

Well you’ve come to the right place!

I’m a huge fan of As Seen on TV products but of course there are a lot of duds before you come across a solid product and that’s just how it is.

Will this be one of those duds or will it actually be one that can backup its crazy infomercials?

So many questions and I would like to provide these answers within this review as I’m sure you are ready to purchase another product thanks to Phil Swift and his marketing tactics.

Glue is the sort of product that you don’t really think a whole lot about right? We know what it does, we know where to get it, and we know when to use it. It’s a basic product that everyone needs but few people ever think about.

Standard glue is fine, but today we will be taking a look at a product that offers a little bit more than the standard adhesive.

You may have seen ads for Flex Glue on television before but since ads give only give you part of the picture today we will be taking a closer look at this product to see if it is right for your home.

Read on for a review of the Flex Glue adhesive!

Flex Glue Review

Product: Flex Glue

Company: Flex Seal

Price: $24.99 + S&H

Where to Buy: Amazon.com

Overall Rating: 3/5 Stars

Who This Is For

Flex Glue is a product that should be a good fit for most home owners, really. The thing you need to understand about Flex Glue is that it’s chief selling point—the reason that it costs a whole lot more than a typical tube of Elmer’s—is that it is extremely strong.

The adhesive is thick and resistant to moisture to the point that it can be used even underwater. This strength and resiliency makes a great option for anyone that has a lot of basic repairs on their hands.

These things being the case it is not going to be a very good fit for the person that is looking for glue that falls more into the arts and crafts category.

Flex Glue is a powerful adhesive that will serve as an excellent tool for pretty much anyone that needs to get some repairs done around the house.

How It Works

Flex Glue can be used to seal, repair, or bond, but regardless of your intended application the process of using this product is pretty much the same no matter what.

To use Flex Glue, with the help of a caulking gun you simply apply the adhesive steadily onto the service that you intend to bond, seal or repair, and then carry on with whatever you were doing…..

It sounds overly simple, I know, but you know how to use glue, right?

Just be careful. This really is some heavy duty, carpenter quality stuff here. You can use it to repair roofs, mount black splashes, repair bathroom shower tiles, home trim, etc.

The sky is the limit. Really, most do it yourself projects could benefit from some Flex Glue at some point or another.

Is the Adhesive Sustainable


That’s the question you should be asking yourself. An adhesive that can be used indoors outdoors, on land or beneath water, on anything you can think of sounds great, but only if it can live up to its many promises.

The good news is that Flex Glue for the most part actually does live up to its many claims. The adhesive sets pretty quickly, it is sustainable against most climates and situations (and in fact is even able to hold its bond in temperatures of up to 200 degrees Fahrenheit) and it is very strong.

If you watch the commercial you will see a bunch of stunts designed to show how quick and powerful the glue is: bricks being bonded instantly, to planks that have been sealed by Flex Glue being used to hold up hundreds of pounds.

The reality of this product isn’t quite so dramatic. In reality it takes about twenty minutes for the glue to completely set, and of course the strength of the bond itself is going to depend on plenty of variables.

That said, the adhesive does do what it claims to do which is really all that you can sk of it.

The Price

The price for this unit is $24.99 plus an additional five dollars for shipping and handling.

It’s more than a lot of similar products, which is kind of a drag, but it is a good adhesive, and if you are an Amazon Prime member you will at least be able to save a few dollars on the cost of shipping.

See it on Amazon Here!

To Buy or Not To Buy?

Honestly, the only reason not to buy this product if you are in the market for an adhesive is the price. Like I said, it is a little bit more expensive than other similar products which no shopper really likes to see.

However, the difference in cost is not significant enough to eliminate the adhesive as an option altogether, and one could argue that the quality of Flex Glue is enough to justify the slight price hike.

Now, that said, if you are looking for the best deal out there, you aren’t going to find it here.

Ultimately the decision will come down to your priorities. Do you want the best adhesive possible?

If so Flex Glue is at the very least an option.

Or, are you just trying got get the best deal? If that’s you, a different, similar product might be better for you.

Pros and Cons


  • Powerful
  • Resistant to Extreme Temperatures
  • Water Proof
  • Fast Acting
  • Versatile


  • Claims of the advertisements are a little bit exaggerated compared to the reality of the product.
  • The price of this unit exceeds that of other similar products.
  • The adhesive itself is fairly prominent if it is not applied discretely.


So, what are we thinking? Well, Flex Glue obviously isn’t perfect, but neither is any other product, and it does make promises that are a little bit grander than it can deliver upon but then so does pretty much everything.

As I see it Flex Glue is good at what it does and while it is a little bit more expensive than a lot of comparable products it still makes a great option for anyone that wants a powerful, versatile adhesive and doesn’t mind spending a little bit more money for it.

Other than that, we give Flex Glue two thumbs up!

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14 thoughts on “Flex Glue Review: Does it Really Work?”

  1. This glue doesn’t work. It’s worthless. All it does is make a smear mess. You can’t get it off your fingers but god forbid it a simple piece of plastic. Don’t buy this glue!

    • Flex glue is a scam. $24.95 + S&H (19.90 non-refundable) . So if you don’t like the product (you probably won’t), you’re still out $19.90.
      Other than John’s review, most other reviews are very very very poor.
      Words to the wise….save your money.

    • John, I used flex glue to seal a small tear (about 3 in.) in the vinyl of an 18’x36′, 20,000 gal. inground pool while it was still full of water. Covered the tear with flex glue and a strip of repair vinyl. Good news, it stopped the leak. Bad news, I now have adhesive everywhere in the water, and it is definitely sticky. The Polaris pool cleaner hits the side of the pool now and just stops, unable to slide sideways and continue cleaning. You said try not to get it in contact with your skin (and eyes, I assume) and I couldn’t agree more. Now we have an 8′ deep hole in the ground that we can’t use for swimming because it’s coated with a thin layer of sticky glue. So much for gluing pool tiles underwater like in the commercial! May not be a problem if allowed to cure above water, but it’s not recommended for aquarium repair and I can see why now.

    • I had to return my first mini tube because it hardened up within a couple of months, and even if I stood on it, it would not come out the spout. Now I am having the same trouble with my second tube and I am totally fed up!!! I have nothing good to say about it and hope I can find my receipt so I can return this one too. I’m a very patient senior, but what the heck is going on with this terrible product!?

  2. It does work Nick you just need to treat it like the sticky glue that it is or you’ll have the same exact mess that you experienced. As with any strong glue out there, try not to get it in contact with your skin. Period. Do you know of a better glue?

  3. Insti-grab is a fallacy and should be eliminated from the advertisement. The glue is crap. Save your money and by bubble gum which will work just as well

  4. To Nick Scarantino: To be more precise, you bought a can of glue, and you made the mess. I have used it. It worked as advertised, but if you’re repairing a hole say in a board, you need to fill it and then use a paper towel to wipe off the excess and smooth it (within a couple minutes), then top it off in maybe an hour due to the way it gets sucked into the void during drying, and repeat the cleanup process I’ve described. I even used a razor blade to shave down excessive fill material once dry and set. I used it to fill a crack in a floor, between two unlike materials. Having filled the 1 1/2 inch deep gap I used additional material to eliminate the different heights between the two surfaces with a bevel finish,, applying the flex glue and smoothing it within five minutes. I watch my client use her rocking chair across the repair, the glue’s adherence is superb, and the rocking chair has not in any way loosened the bond or even indented the bevel which I smoothed to a feather edge. By the way, I washed it off my hands with soap and warm water and moderate scrubbing.

    • You can hardly squeeze it out of a caulking gun
      .once you finally get it out it will not spread with a 3 inch putty knife…it is like it was 2
      0 years old unlike some of the videos I have seen where it comes out of the tube like latex caulking it is going back to the Ace Hardware.
      A waste of money…

  5. You can hardly squeeze it out of a caulking gun
    .once you finally get it out it will not spread with a 3 inch putty knife…it is like it was 2
    0 years old unlike some of the videos I have seen where it comes out of the tube like latex caulking it is going back to the Ace Hardware.
    A waste of money…


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