Flex Paste Ultimate Test - Honest Review

Is Flex Paste as good is it claims? Here's a real world test. Was I too tough? Also tips on how best to use Flex Paste and results of Flex Glue, Flex Seal, and Gorilla Patch Seal. This is an honest review, I bought these products with my own money and was not compensated in any way by the manufacturers to make this video.

These are the products tested and discussed in this video:

WARNING: This video is only for entertainment purposes. If you rely on the information portrayed in this video, you assume the responsibility for the results. Have fun, but always think ahead, and remember that every project you try is at YOUR OWN RISK.

Music: Snake on the Beach by Nico Staf

I'm an Amazon affiliate and clicking on the above link(s) provides a small percentage to the channel via Amazon at no additional cost to you. Thank you for your support.

[danielb]

To stop a crack from expanding, drill a hole at the end of the crack. This is a plugging/patching technique from the military. Thank you for the review. Looking for something to fix a small nick on a PVC elbow that is a drain pipe (at the top of a run)... so zero pressure. It might do the trick.

[justinlong]

I wish you had drilled the ends of the cracks before commencing your fix attempt. This MUST be done, otherwise, it doesn't matter how you attempt to fix existing crack. If not drilled, crack will progress, once water pressure builds inside. Learned the hard way.

[MJTVideos]

The plastic that the tank is made out of is HDPE which is extremely difficult to bond to. I’d recommend learning how to plastic weld because it’s really the only “true” way, unfortunately, to repair HDPE. Even specialty glue companies struggle to develop HDPE glues.

[MrDraper]

Read the directions. Says to let fry 24 to 48 hours. I've used it to fuse two rubber liners together. Let dry 48 hours and no problems.

[utubegreenfuture]

Put the paste on when barrol is FULL to avoid crack growth. You put paste on when empty, w/o considering 8 pounds for every gallon you add to it.

[slydog]

The problem could be the flexibility of the plastic barrel. The Flex Paste is flexible, but only up to a certain limit. With water in the barrel, it likely bulged more than the Flex Paste could stretch. Not necessarily a product failure, just asked to do more than it could. You might try plastic welding to fix the barrels. You can get a plastic welder from Harbor Freight, though it does take practice.

[ann]

I used flex paste to stop water leaking around my kitchen window, I have recently replaced the gutters on the house no more rain coming in. My problem I have now, is how do I remove the built up paste. Any help would be greatly appreciated.

[tippo]

Drill holes at the end of the cracks that will stop that cracks getting bigger

[lizacannon]

oh also did u clean it
and also it was to thick. it tells u to not so thick and to let sit for 24 hrs in between coats. how long did the barrel actually sat for to dry with it that thick

[ianbackus]

Had nothing but great results with the flex paste. I'm not sure your prep work was really all there. Have you considered plastic welding?

[LuminairPrime]

I feel like this is just a caulking/sealant, and a polyurethane construction adhesive would serve you better, at least on the outside for rigidity!

[jamiep]

I'd bet superglue would work well as that welds the plastic rather than a 2nd material trying to fill the gap

[OGGventures_cruising]

Thanks for the great video. I'll be sure to check out others you've made. 🙌

As a full time cruser I always use Sikaflex 291 but lately it's been hard to find. I'm seeing flex past everywhere so I'm thinking of giving it a try.
Unfortunately I haven't seen any comparison videos on the two.

Oh and just a suggestion.
Drill a small hole at the end of you cracks to keep them from growing.

[aquaticnstuff]

I would have sanded some of the plastic down, just scuffed it some, to get a good contact with the flex seal

[jimbosander]

Good test overall. I like the tips in the comment to drill a hole to stop a running split. I came here as was looking for reviews on the Gorilla (or any "paste") product. I don't trust it for strength, it just seems like it's a glorified smear-able rubber.

I'm trying to repair a gaping hole on the wall of an OLD pool skimmer.

Used clear primer and cement to layer 3 sheets of fiberglass fabric. At the point of deciding whether to bondo over then paste, or just paste or just bondo :)

In your case, not sure bondo is a potable option.

[alive-awake]

I want to use this on the top of my badly aged wood pergola slats. 2x4's. Thought it might protect them from any further rot. I dont want to use the liquid for fear of all the dripping down the sides of slats. What do you think??

[donnaboyd]

I have a question. I bought my mom an automatic soap dispenser for her shower. The shower walls are covered in tile so you can't screw the dispenser to the wall.Can i use flex paste to attach the dispenser to the wall

[lewisw.]

I understand a rain barrel not working, because it's standing water.... what about the frame of a sloped skylight window, where the water will be running off, and then the roof will be drying out?

[TheHughg]

Saved me from wasting my money. Thank you

[fieldlab]

My first attempt would be Vulkum. Especially the smooth (untextured) version. Priming the surface with alcohol or something would be important.