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Flex Paste 1 lb. White All-Purpose Strong Flexible Watertight Multipurpose Sealant

$1299
  • Thick rubberized paste that clings to virtually any surface
  • Instantly fills large gaps, cracks and holes
  • Flex paste is UV and mildew resistant, will even cure underwater
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Price:
$1299

Product Overview

Flex paste is a super thick rubberized paste you can use to spread, shape, form and seal virtually everything. Flex paste starts out as a thick paste and dries to a strong, flexible, rubber coating. It can be applied to all types of surfaces to seal out air, water and moisture. It clings to the surface and instantly fills large gaps, cracks and holes. It won't shrink or wash away and can be painted any color. Flex paste can be applied on dry or wet surfaces, even underwater. Flex paste clings to a wide variety of surfaces and will work on wood, glass, tile, concrete, aluminum, metal, brick, stucco, masonry, copper, fabric, fiberglass, ceramic, porcelain, natural stones, roofing, PVC, EIFS, EPDM, CSPE, Hypalon polyurethanes and so much more.
  • Seals out air, water, and moisture
  • Shape to take any form so you can fill large gaps and holes
  • Apply on wet or dry surfaces
  • Clings to multiple surfaces and hard-to-reach areas
  • Flex paste is perfect for DIY, handyman projects, arts and crafts, hobbies, repairs and so much more
  • Once completely dry, flex paste can be painted any color
  • Non flammable and UV, chemical, and mildew resistant
  • You can use flex paste on a wide variety of surfaces such as wood, glass, tile, concrete, aluminum, metal, brick, stucco, masonry, copper, fabric, fiberglass, ceramic, porcelain, natural stones, roofing, PVC, EIFS, EPDM, CSPE, Hypalon polyurethanes and so much more
  • Depending on temperature, humidity or the thickness of the layer, flex paste can be tooled within 15-30 minutes of the initial application it will dry to the touch in approximately 2-hours and fully cure in 24 to 48-hours
  • Flex paste gets stronger over time
  • Flex paste can be applied in a wide range of temperatures from 0°F - 150°F once applied and fully cured it can withstand a wider range of temperatures from 40°F - 200°F
  • With proper application, care and maintenance, flex paste will last for years



Info & Guides

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Specifications

Dimensions

Individual size (oz.)
16

Details

Color/Finish
White
Coverage (linear ft.)
10
Cure Time (hours)
24
Dry Color Family
White
Dry to touch (min.)
30 min
Features
Moisture Resistant,Mold and Mildew Resistant,Paintable
Indoor/Outdoor
Indoor/Outdoor
Interior/Exterior
Exterior,Interior
Kit
No
Longevity
Not determined
Number of Tubes Included
1
Returnable
90-Day
Sealant Form
Standard Tube
Sealant Type
Multipurpose
Transparency
Solid

Warranty / Certifications

Certifications and Listings
No Certifications or Listings
Manufacturer Warranty
100% Money Back Guarantee

Questions & Answers

Typical questions asked about products:

  • Is the product durable?
  • Is the product easy to use?
  • What are the dimensions of the product?

Customer Reviews

  • 3.9
    out of 476 reviews
  • 82% recommend this product
Filter by:
Showing 1-10 of 476 reviews
Did the job but it was difficult to spread the...
Did the job but it was difficult to spread the paste around the crack. Overall I am happy with the product and the result.
by
Response from Customer ServiceOct 19, 2021
Hi there, thanks for sharing your Flex Success with us. We're glad to hear the Flex Paste worked great for your project. If you'd like some helpful tips and tricks for future projects, feel free to email us at Humans@FlexSealProducts.com. Flex On! FlexSealProducts
    Sealed my outdoor Sarracenia bog.
    A couple of months ago I used this to seal my outdoor wooden bog in order to make it water tight. Then, I used the remaining paste to refinish the top of my dryer that was rusty. This stuff is awesome. So is the liquid Flex Seal. Nothing else comes even close to how well it works.
    by
    Response from Customer ServiceSep 10, 2021
    Hi there, thanks for sharing your awesome experience with us. We’re glad to hear the Flex Paste for your wooden bog repair! If you need help with any future projects, please feel free to email us at Humans@FlexSealProducts.com. Flex On! FlexSealProducts
      • Recommended
      No good for koi ponds!
      It works as described to use under water . But I warn anyone trying to use this product in their Koi fish pond.. Do not use! I attempted to use this to stop a leaky water skimmer. Although, so far my fish seem unharmed, Flex Paste leaves a large oily film on top of the water. It is virtually impossible to get rid of without fully draining and washing your pond out.
      by
      Response from Flex Seal Family of Products Customer CareJun 23, 2021
      Hi there, thanks for sharing your review with us. We're so sorry to hear the Flex Paste left a film on top of your pond water. When you have a moment, please email us at Humans@FlexSealProducts.com, so we can find a solution. Have a wonderful day.
      • Verified Purchase
      Didn't work for me
      I got the Flex Paste because of the usage under water adds. Mine wouldn't even stick to damp concrete (see pics), very disappointed, I sure needed this to work. What the directions don't tell you is that you will need disposable gloves, the directions do tell you to clean up with paper towels, the only way paper towels will work is if you throw 6 rolls in a pile light it and throw your spreader in, you cant imagine how sticky this stuff is, just don't try to use it on anything wet. Have plenty of mineral spirits available for clean up.
      by
      Response from Customer ServiceApr 27, 2021
      Hi there Hal, thank you for taking the time to share this review with us. We're sorry to hear about your experience using the Flex Paste and would love to turn this around. When you have a moment, please message us at Humans@FlexSealProducts.com so we can help out further. We're here for you. FlexSealProducts
        8 people found this helpful
        Quick dry
        [This review was collected as part of a promotion.] I've been using the Flex Paste for some repairs around the house and I am very pleased with the results. This stuff works incredibly well, it's easy to shape, spread, form, and seal to just about any surface. You should be sure to wear protective gear, you don't want to get this stuff on you. I had little to no air pockets in my 12lb tub, do not scoop out. My wife also uses the Flex Paste for her arts and crafts and has stated it's the best rubber paste she's ever used and how quickly it dries. I would highly recommend the Flex Paste.
        by
          • Recommended
          Seals perfectly
          [This review was collected as part of a promotion.] I used the flex paste on my work trailer because it has been leaking pretty badly. I used a putty knife to spread it around to give it a even coverage. We have had extremely bad rain the last few days and the inside of my trailer is still extremely dry. It was very easy to spread and cover most of the top of my trailer. It spreads out and forms in all the little cracks that I had. It is a strong rubber so its even better than the Caulking I was going to use. It has a dry bag and foil to keep it nice and fresh till you actually beed to use it.
          by
          Response from Flex Seal Family of Products Customer CareFeb 4, 2021
          That's great news! We're thrilled to hear the inside of your trailer is dry and leak-free. Flex Paste is wonderful for projects like this and so much more. You can use around your home, boat, trailer, or RV for virtually any repair. Plus you can paint over it! Please feel free to contact us at Humans@FlexSealProducts.com if you have any questions. Thank you so much for taking the time to write your review and sharing your experience with us. Flex On!
            • Recommended
            Mr
            [This review was collected as part of a promotion.] This is a thick rubberized paste that clings to the surface and instantly fills large gaps, cracks and holes.Once dry, Flex Paste turns into a strong, flexible, watertight, rubberized coating that seals out air, water and moisture.It's UV and mildew resistant.Will work on wood, glass, tile, concrete, aluminum, metal, brick, stucco, masonry, copper, fabric, fiberglass, ceramic, porcelain, natural stones, roofing, PVC.Give This Stuff A Try..
            by
            Response from Flex Seal Family of Products Customer CareFeb 5, 2021
            Definitely, give Flex Paste a try. Thank you so much for sharing your experience with us. You can always reach out to us by email at Humans@FlexSealProducts.com with any questions. Flex On!
              • Recommended
              Flex Paste - Fixes Shower Tub/Leak
              We've had an on-going problem with our 20 year old fiberglass/gelcoat shower/tub. The leak started as a small hairline crack in the bottom and has grown to 2-3". Over the last 3 years I've patched it twice with the Gelcoat Repair Kits which last a while, but begin leaking again. I did some research and decided to give Flex Paste a try. I covered the leaking area with Flex Paste and have been leak free for a couple of weeks. It seems like a solid repair and we'll see how long it lasts. I like that I can spread the Flex Paste well beyond the crack.
              by
              Response from Flex Seal Family of Products Customer CareFeb 8, 2021
              Flex Paste is incredibly durable and we're confident that your bathtub will be leak-free for many years. Please feel free to message us directly by email if you have any questions (Humans@FlexSealProducts.com). Thank you so much for sharing your experience with us. Flex On!
              • Verified Purchase
              • Recommended
              A seal that will last
              [This review was collected as part of a promotion.] I am truly impressed by how well this flex paste cartridge works. My basement would get wet everytime it would rain because I had a window that would leak due to a slight gap in the frame. I also had a horizontal crack across some of my cinder blocks in the basement. I filled the gap by the window and the crack in my wall with this flex paste. This paste is easy to use and did not require any mixing or special instructions prior to using it. One reason I chose this paste was because it is mildew resistant and my basement tends to be damp especially in spring and summer. Another reason this product is so amazing is because it is flexible, strong holding, and made of super thick rubberized material that clings to many different surfaces and instantaneously fills large gaps, cracks, and holes. I love how watertight this paste is and how well the rubberized coating seals out air, water, and moisture. I am happy to report that I have had no further problems in my basement with water leaking since I used this product. I will always keep this on hand because it works so well. I highly recommend this product to anyone who needs to make repairs, fill any holes, cracks, or leaks without having to spend a fortune. This product will not disappoint.
              by
              Response from Flex Seal Family of Products Customer CareFeb 10, 2021
              Hi there! We're ecstatic to hear that. Flex Paste is genuinely a terrific product for everything you described and so much more. Please message us any questions by email at Humans@FlexSealProducts.com. Want to try one of our Flex Seal products and don't know which one is the right one for your project? Reach out to us! Our Flexperts are always glad to assist with all your DIY projects/repairs. Thank you so much for your review and Flex On!
                • Recommended
                Works great!
                [This review was collected as part of a promotion.] I got this a while back to use to reseal my blaxkplash in my kitchen! So a new home project for renovation and this helpped make it happen! I've never done or used this stuff before! But I can not believe how easy this is to use or how easy it makes resealing stuff! Definitely will continue to buy this for more projects in the future! So easy to use, dries quick and looks great when it does dry! I used white, as you can get it in different colors whichbis pretty neat I think!
                by
                Response from Flex Seal Family of Products Customer CareFeb 10, 2021
                That's wonderful, Raelee! Thank you so much for sharing your experience with us. Please keep in mind that you can contact our Flexperts by email (Humans@FlexSealProducts.com) for future DIY projects. Our entire Flex Seal Family line of products are terrific for virtually any repair. Have a Flextastic day!
                  • Recommended
                  Showing 1-10 of 476 reviews