Ratings may include incentivized customer reviews.
What Customers Are Saying
The product is praised for its effectiveness, ease of use, and versatility in fixing leaks, cracks, and holes on various surfaces. Customers report the paste is durable, fast-drying, and forms a strong, waterproof seal. However, some have experienced issues with the paste drying out or hardening prematurely, and a few received unusable portions upon arrival, suggesting occasional quality control problems. Overall, the majority of customers are highly satisfied and recommend the product as an effective and affordable solution for household repairs.
Customer review summary generated by AI, including incentivized reviews.Great flex
[This review was collected as part of a promotion.] When I first moved into my brand new home, I never noticed a hole in my ceiling until I lay down in my bed first night. Upset about it I wanted to fix it right away and with this flex paste, it made it super easy to conceal
From flexsealproducts.com
Hair thickness
[This review was collected as part of a promotion.] I received this product yesterday and we already used it to seal up something in our house. I will continue to use it and it as been very affective for me so far!
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Hi there! Thank you so much for your 4 star rating. If you'd like some helpful tips and tricks for future DIY's, feel free to message us at humans@fle...
This stuff is cool and works great!
[This review was collected as part of a promotion.] This stuff is great to seal up leaks or use as a general putty/caulking. It seems to hold up great after it’s dried and a little goes a long way. Great to have around for odd jobs.
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Hi there! Thank you so much for your 5 star rating. If you'd like some helpful tips and tricks for future DIY's, feel free to message us at humans@fle...
Nice
[This review was collected as part of a promotion.] Received this in the mail yesterday! The packaging is really nice and seems that the product stays good in the can that it is in. I HAVE NOT TRIED IT YET. But excited to!
From flexsealproducts.com
Hi there! Thank you so much for your 5 star rating. If you'd like some helpful tips and tricks for future DIY's, feel free to message us at humans@fle...
The most durable seal I have ever used!
[This review was collected as part of a promotion.] The most durable seal I have ever used! Stays on and doesn’t rip. I hadn’t had to reapply the seal anywhere I’ve used it. Mostly I’ve used it on holes in the kids blow up water slides and it holds up great!
From flexsealproducts.com
Hi there! Thank you so much for your 5 star rating. If you'd like some helpful tips and tricks for future DIY's, feel free to message us at humans@fle...
Durable and versatile
[This review was collected as part of a promotion.] I haven’t heard of this before but now I am hooked on it! It works so well! A little goes a long way and the drying time is pretty quick as well! It’s durable
From flexsealproducts.com
Hi there! Thank you so much for your 5 star rating. If you'd like some helpful tips and tricks for future DIY's, feel free to message us at humans@fle...
Good for filling in larger issues.
[This review was collected as part of a promotion.] This stuff is thick, but that’s what you want when you are filling in cracks or holes. I have seen some reviews saying that it drys out in the plastic packaging, this is the metal packaging, more like a paint can rather than a bucket, so I think as long as it’s basically resealed afterwards and is t out drying all day, you should get more than one use out of it. If you don’t use it all the very first use. I was able to use it to patch some thin...
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Durable and strong!
[This review was collected as part of a promotion.] Highly effective. Strong paint that easily sticks to all surfaces. Extremely durable. Great price and very strong. Highly recommend for leaky ceiling!
From flexsealproducts.com
Hi there! Thank you so much for your 5 star rating. If you'd like some helpful tips and tricks for future DIY's, feel free to message us at humans@fle...
Nice
[This review was collected as part of a promotion.] This is a nice size container. I’m excited to see what it can do. The container feels heavy as if the consistency of the product will be nice. I think this will be good.
From flexsealproducts.com
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Really does work
[This review was collected as part of a promotion.] This paste is incredible. It really does stop leaks we used a bit for a pipe and it’s still ok for a quick temporary fix. Love that it is black. Not bad pricing either.
From flexsealproducts.com
Hi there! Thank you so much for your 5 star rating. If you'd like some helpful tips and tricks for future DIY's, feel free to message us at humans@fle...
Easy to use
[This review was collected as part of a promotion.] I like how it comes in a resealable metal container. It’s good for sealing areas and preventing water from entering. It takes a while to dry but not terrible. The drying time is about 24-48 hours. Would be nice if it came with an applicator
From flexsealproducts.com
Hi there! Thank you so much for your 4 star rating. If you'd like some helpful tips and tricks for future DIY's, feel free to message us at humans@fle...
Great for stopping water leaks!
[This review was collected as part of a promotion.] I got to try out a container of White Flex Seal Padte courtesy of Influenster. This stops water and leaks in its track! Super easy to apply, rubberized finish and can even be used on wet surfaces or underwater! I use if for leaks that develop under the kitchen or bathroom sinks. Great for filling any holes or cracks in concrete around the house.... no more bugs finding their way in through any holes on the surface. Comes in a resealable stay ...
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Hi there! Thank you so much for your 5 star rating. If you'd like some helpful tips and tricks for future DIY's, feel free to message us at humans@fle...
Great waterproof seal!
[This review was collected as part of a promotion.] This is a rubberized paste. I chose the white version to blend with the white pipes. Good for making a waterproof barrier to stop a leak. Re-closable container so keeps product fresh for later uses. Good thing about it is that can be applied to both dry and wet surfaces and has a preservative to inhibit the growth of mildew.
From flexsealproducts.com
Hi there! Thank you so much for your 5 star rating. If you'd like some helpful tips and tricks for future DIY's, feel free to message us at humans@fle...
Great
[This review was collected as part of a promotion.] I absolutely recommend this to anyone out there that's dealing with some type of leaks this is definitely a must have for sure to have around this really gets the job done
From flexsealproducts.com
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Some creative uses!
[This review was collected as part of a promotion.] I had a weird problem, and no obvious solution: our koi pond (full of pet store goldfish, fat and happy) is surrounded by rocks. Big rocks. Rocks that sometimes shift and fall into said pond. My husband and I were brainstorming ways to subtly “attach” the rocks to the plastic pond liner, at least in some small amount. As no pond water would touch this area, but it would be exposed to the elements, it needed to be something durable and water-res...
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Fix it very well
[This review was collected as part of a promotion.] I was painting my dingy old basement and make it a little more inviting to do my laundry when I notices the concrete steps I had painted two days before with a sealant paint had white water marks. I realized the threshold outside the door had a crack underneath and the water was running behind the stairs. I used this product on the area and repainted the stairs and now I have no more water leaking in! Great product and works as advertised.
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Hi there! Thank you so much for your 5 star rating. If you'd like some helpful tips and tricks for future DIY's, feel free to message us at humans@fle...
Works well
[This review was collected as part of a promotion.] This can be applied underwater, and it even dries underwater. I used it on a leaky pipe for the refrigerator line for the ice maker. I just put it on, and the leak stopped. I wanted to try this product for a very long time now and so glad I did. I just coated it, and it sealed it super-fast. It gets cold and damp in the basement, and this worked well. I love that it creates a waterproof barrier no matter how cold or wet it gets. I can use it on...
From flexsealproducts.com
Hi there! Thank you so much for your 5 star rating. If you'd like some helpful tips and tricks for future DIY's, feel free to message us at humans@fle...
Easy to use
[This review was collected as part of a promotion.] This flex paste is super easy to use. Just scoop some out, put it on using a putty knife and then etch it to make increase adhesion. Easy to clean up after with some mineral spirits. Great to have on hand because you never know what is going to happen during a project 😂
From flexsealproducts.com
Hi there! Thank you so much for your 5 star rating. If you'd like some helpful tips and tricks for future DIY's, feel free to message us at humans@fle...
Perfect for sealing slylights from strong rains!
Would RecommendPerfect for sealing slylights from strong rains!...
From flexsealproducts.com
Hi there, thank you so much for sharing your Flex Success with us! We're happy to hear the Flex Seal Family of Products is working great for your proj...

Hi there! Thank you so much for your 5 star rating. If you'd like some helpful tips and tricks for future DIY's, feel free to message us at humans@fle...