Flex Seal Reviews

I bought this because my pool safety cover was wearing thin on one side and it was letting light through, which allows algae to grow. I figured if it could seal a screen floor of a boat, it will coat the mesh easily. Well, first of all, it is impossible to spread. It's so thick. A paintbrush isn't stiff enough to apply this - it's like tar! I had to brush over the same area multiple times with immense pressure to coat the vinyl mesh, so much so that the paintbrush snapped in half. The blue tape I tried to use to do a neat job was useless and I ended up getting this black tar/paint all over everything, especially me. It didn't coat the fabric either. You can still see through it. In addition, it left a huge black rubber mark on my lawn underneath.

The 32 oz can barely cover the area which was less than the coverage advertised. For $30 it was a waste of money, and I would have been better off buying a gallon of epoxy paint. It would have been cheaper, worked better and much easier to work with.

I used two cans to paint over a 4ft.x 8 inch piece of my rubber dingy to stop a slow leak. No good, I wound up getting some rubber glue and a patch. It worked better and it was much cheaper. Their commercials should be illegal.

I bought a quart of the Flex Seal last summer to fix a leak on the garage lower wall. The prior owner apparently had two idiots build the garage, and they did not grade the concrete away from the wall, so every time it rained hard, the water came in several places. We had the wood repaired along with the siding and lower flashing Several contractors looked at it, and everyone said there was no solution except silicone. Well, I tried silicone, and it never held to the concrete well. I used the quart last summer and it seemed good. After a full summer and a bad winter it was great. The Flex Seal was bonded to the concrete. I bought a gallon this summer and put a three-inch wide layer around and it was great. I give it a 9 out of 10. TV ad items are crap but this item I would give ten stars if I could. Amazed with the result.

Simple repair on a drain pipe (not pressurized) still leaks after two spray cans of this crap. It is not as advertised. There are no negative rating for this rip-off product. It is liquid crap in a spray can.

Don't bother purchasing this product if you are trying to seal a boat fender puncture. On the surface, you would think this product would be ideal for that purpose, but that was not my experience. After locating the pencil-head size puncture to my boat fender, I applied a 2" x 2" piece of Flex Seal (more than adequate for the puncture size) and proceeded to inflate the fender. It inflated beautifully, but (almost immediately) air began to escape from the repaired area. The advertising hype would lead you to believe that this product seals anything and everything. False.

First of all, I wish I would’ve looked at other reviews before I purchase this product. I had a job where I had to seal 28 seems inside the gutters, I allied two generous coats of this product and thought it was completely sealed but to my surprise, they all leaked and it never sealed anything. This product is total garbage, don’t waste your money, go elsewhere!

I use this all the time. I sent them the idea I had used it for - I used this on my front door, boy did it work. Only it worked too good. I tried to put back up our welcome sign and could not, it was that strong of stuff. Super great stuff, I use it 20 out of 24 times on many things and reasons.

My cousin's swimming pool had leaks, so they first tried the spray where it was leaking it didn't stick and/or stay, it made it worse. Then we wasted more money buying the waterproof Flex Tape and put some on from the inside of the pool and outside of it and it just came apart from the inside, and on the outside, it just ripped. So it's not waterproof and doesn't work well like it should be!

My buddy boat had a couple cracked places where the top is molded to the bottom. I resealed the top to the bottom with 90 3m glue. It worked very well then after that repair, I get two cans of Black Flexsteel in the spray can, which repaired the cracked places but then I came back 24 hours later and the Flexsteel rubber had holes everywhere. I used the second can to repair the first can holes and waited 12 hours. I went back and the rubber sealant had holes again everywhere that I had repaired.

This is a real smooth hard plastic boat, should have been easy to seal the two to four-inch crack. Now I think they got me again; I'm looking at the holes to repair still, 30 dollars in the hole, and they're running to the bank filling up their accounts with our hard earned dollars. I hope that Mr. Phill sinks his boat that has the Flex Seal bottom, then tries to swim out with his Flexsteel life jacket. The only thing this product is good for. They can sit back and get a good laugh out of all the suckers that got and a taste of bitterness from a false and deceiving product. I would never buy any of their products again.

I wasted lots of money believing this liar Phil Swift. Within no time at all, this so-called miracle product simply dried and flaked off. This stuff is junk and a rip-off. Go get you some silicone caulking and spread it thin, that will last forever.

I used Flex Seal Tape to try and seal the leak on the vinyl slide; it's not worth the effort of even trying to put it on. I still didn't learn my lesson and tried Flex Seal Spray on something, and all I got was a sticky mess! I would never recommend this product to anyone and agree with another TV review ad. It's BS.