Does Flex Seal Work? Results of Flex Seal TestingĬRH’s boot didn’t work out. He does point out that you may want to let it dry a little longer. I guess he doesn’t like reading instructions, because, after all, he’s crazy. Otherwise, much like spray paint, the sealant will drip and run.ĬRH only waits about an hour before testing for water-tightness. One thing he discovers immediately is that you should not spray too much at once, but rather go for thin layers. Flex Seal also comes in a can so that it can be spread on instead of sprayed. If you’re like me, you’ve encountered sealants that become useless if you do not use the entire container at once. I do not know if this really works for Flex Seal but since you are supposed to allow at least 24 hours before re-applying, you can probably keep using the same can. This cleans out the nozzle so that sealant (or paint) does not dry and clog it up. Turn the can upside down and spray until it sprays clean. ![]() I suspect that he could have saved what was left in the can by using the same technique as you would for spray paint. This other coat, I would surmise, is as needed. On the instructions, they say to apply several coats and then wait 24 to 48 hours before applying another coat. However, in their FAQ, they also recommend that you wait for one coat to completely dry before applying another. According to the Flex Seal instructions, you are supposed to apply several even cracks until you’ve filled all the cracks and holes. He waited for the first layer to dry a bit before spraying on the next. A 10-ounce can is supposed to cover 8 square feet, while a jumbo 14-ounce can covers up to 12 feet. He has so much left over at the end he decides to just go ahead and paint the entire plant pot black to use up the rest of the can. He was able to put two layers on everything, including really thick looking layers on the strainer, with just one can. He also decides to try it on a nail-hole in the sole of his boot. And, he attempts to fix ceramic plant pot that had cracked apart during the cold winter, much like what is demonstrated on the commercials. He attempts the waterproof strainer trick, spraying a metal-mesh strainer (colander) with the rubberized sealant. ![]() He pokes two knife holes in a perfectly good 5-gallon bucket and sprays the holes with Flex Seal. ![]() I need to do that more often when I’m working with stuff like spray paint around the house. Does this stuff really seal as well as the commercials suggest? CRH duplicates some of the things the guy in the commercial claims are possible. I like watching the CrazyRussianHacker (CRH) (YouTube channel) because he cracks me up and he tests things, even things that seem completely useless to start with, such as “banana gadgets.”īut then he tests things which are supposed to be extraordinarily useful, like Flex Seal. Yes, Flex Seal is just on in several rubber-based sealants. In this article, I’ll be considering a video review of Flex Seal and discussing some more aspects of the product, as well as comparing it to other such products. It will seal anything and can be used pretty much anywhere. ![]() If you believe the commercials, then Flex Seal is a miracle product.
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