Since I had such a hard time finding reviews by people who had actually used Flex Seal, I decided to order some for myself. And, guess what? It just came! I’m pretty excited to try it out, but I’m going to wait until I’m able to take some video of my experience to post here on this site.
I will go ahead and tell you some things I’ve noticed now that I actually have the can of Flex Seal in hand:
- I can see how people would misuse this product and then claim it doesn’t work. In the instructions it says “For maximum effectiveness, apply several thin coats rather than one thick layer.” Well, duh! I recently saw a news channel video review where they applied two thin layers and then complained that it didn’t work (although it did work much better after application than without any at all). That makes sense that several thin layers would work much better than one or two thick, goopy, uneven layers.
- There appears to be a lot of shaking necessary. The directions read “Shake vigorously until agitator ball inside can rattles freely for one minute. Shake can occasionally throughout application.” So, first you shake until you hear the ball rattle. Then shake for one minute more while rattling. Then shake occasionally while applying.
- Another thing to make sure you do – after using Flex Seal, invert the bottle and apply a short burst to clear the actuator. If you don’t remember this step you’ll have a clogged up can that doesn’t work the next time you need it.
- One thing they don’t mention on the commercials is that there are no CFCs in Flex Seal. For those who are environmentally conscious, rest easy knowing that Flex Seal won’t be depleting the ozone layer! It also contains no chlorinated solvents, no 1,1,1-trichloroethane, and no hexane.
Well, I can hardly wait to try Flex Seal! Check back again soon to see my video review. Or, try Flex Seal for yourself and let me know what you think of it.

