If you haven't seen the ads, Flex seal is basically a group of products that claim to provide a flexible, water
tight seal, applicable with a spray can, tape, or caulk type gun. https://www.flexsealproducts.com/
I have seen a lot of these commercials, including where this guy makes a functioning boat
out of the product, but normally I don't pay that much attention to TV.
There are many other sealants on the market. But the commercial
claims it even hardens UNDER WATER
, and that got my attention. That is a big deal, and something that I could have really used in the past. (previously, the only product I knew of that would fix a leak underwater was this stuff for swimming pools and it was actually two different types of paste that you had to mix together just prior to applying). So using Flex Tape, for example, you could theoretically patch a small leak on your boat
, or use the Flex glue or Flex Shot to repair through hull seals
, even if they are underwater.
So I bought some flex glue. At the moment, I don't really have anything critical to use it on so I made a small test, deliberately as difficult as possible. I filled a bucket with cold water. Then put two pieces of very smooth plastic under the water and glued them together. I really didn't think this would work
, but I felt a grip on it right away. The product says it takes 24-48 hours to fully cure (underwater might be different, I don't know). But about 12 hours later I checked it, and they were holding together pretty strongly. That's amazing!! I have never seen anything do that before.
On the other hand, not all reviews
are positive. The most common complaint on web sites seem to be that the stuff requires a special type of caulk gun and is sometimes too difficult to push out of the tube (apparently it has a shelf life of 24 months and older product apparently is very thick and more difficult to apply than when it is fresh)
Have any of you tried this? What do you all think of its potential?