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Sold by: Flex Seal Products
Sold by: Flex Seal Products
(26252 ratings)
89% positive over last 12 months
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Flex Seal Liquid, 1 Gallon, White, Liquid Rubber Coating Sealant, Waterproof, Flexible, Breathable, and UV Resistant, Roof Repair, Basements, RV, Campers, Trailers, Marine, EPDM, Masonry

4.4 4.4 out of 5 stars 3,624 ratings

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1-gal

Purchase options and add-ons

Brand Flex Seal Liquid
Style Compact
Item Weight 128 Ounces
Item Dimensions LxWxH 6.5 x 7.25 x 7.75 inches
Compatible Material Vinyl, Wood, Aluminum, Fiberglass, Glass, Plastic, Metal, Asphalt, Porcelain, Ceramic, Concrete, Copper, Polyvinyl Chloride See more

About this item

  • Flex Seal Liquid is liquid rubber in a can! Now you can brush, roll, dip or pour it on!
  • Use anywhere you need a watertight, flexible rubberized coating
  • Goes on smooth and covers fast, sealing out water, air and moisture
  • UV-resistant
  • Prevents rust and corrosion. Chemical resistant

Additional Details

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Frequently bought together

$109.99 ($0.86/Fl Oz)
Get it as soon as Tuesday, Mar 26
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Sold by Flex Seal Products and ships from Amazon Fulfillment.
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$40.31 ($2.52/Ounce)
Get it as soon as Monday, Mar 25
In Stock
Sold by PLEXSUPPLY. and ships from Amazon Fulfillment.
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Product details

  • Is Discontinued By Manufacturer ‏ : ‎ No
  • Product Dimensions ‏ : ‎ 6.5 x 7.25 x 7.75 inches; 8 Pounds
  • Item model number ‏ : ‎ LFSWHTR01
  • Date First Available ‏ : ‎ December 23, 2015
  • Manufacturer ‏ : ‎ Swift Response, LLC
  • ASIN ‏ : ‎ B019QNK9QQ
  • Customer Reviews:
    4.4 4.4 out of 5 stars 3,624 ratings

Product Description

Flex Seal Liquid - It's Liquid Rubber in a Can!
Group picture of various sizes and colors of Flex Seal Liquid

FLEX SEAL LIQUID is thick rubberized liquid that you can brush, roll, dip or pour to form a durable, watertight flexible barrier. Seals out air, water and moisture. Chemical and UV resistant. Available in black, white, clear and gray.

Advantages of Flex Seal Liquid.
Picture of product being rolled onto metal roof.
Brush Roll Dip Pour

What's in the box

  • Flex Seal Liquid Rubber in a Can, 1-gal, White
  • Looking for specific info?

    Customer reviews

    4.4 out of 5 stars
    4.4 out of 5
    3,624 global ratings

    Customers say

    Customers like the performance and ease of use of the sealant. For example, they mention it works well, is easy to apply, and sets up quickly. Customers also appreciate appearance, and seal. That said, opinions are mixed on value, quality, adhesion, and water resistance.

    AI-generated from the text of customer reviews

    292 customers mention260 positive32 negative

    Customers like the performance of the sealant. They say it works well, looks and performs very well, and is easy to use. Some customers also mention that the application works well with hard plastic spatulas on clean, smooth, flat surfaces. Overall, customers are happy with the product's performance and recommend it to others.

    "Worked great one layer on the roof of my metal shed definitely worked great" Read more

    "This stuff is great. Goes on nice and self leveling. Rubbery and seems like it will last a long time." Read more

    "Worked well on RV roof!" Read more

    "...Application works well with hard plastic spatulas on clean, smooth, flat surfaces...." Read more

    153 customers mention109 positive44 negative

    Customers like the seal. They mention it works well to seal leaks and has a rubber seal. It brushes on easily and does not have leaks or bond failures. Overall, customers are satisfied with the seal and recommend it to others.

    "...Knew of a leak when I first used it and it stopped the leak. Did not have time or funds to repair the soft spot at the time...." Read more

    "...Overall, the seal is very easy to work with when using a 1" brush on the horizontal surfaces...." Read more

    "...I filled back in with gravel. Still leaked. I tried sealing from inside after, about 25 years ago with no luck...." Read more

    "...I bought and applied the coating. It brushes on easily and forms a rubber seal. I have not had a problem sense. Good stuff." Read more

    89 customers mention79 positive10 negative

    Customers like the ease of use of the sealant. They mention it works great, is easy to apply and use, and set up quickly. Some say it's easier to use than caulk for an outside project, and that it spreads/rolls on pretty easily. Overall, customers are happy with the ease and speed of use.

    "...I bought and applied the coating. It brushes on easily and forms a rubber seal. I have not had a problem sense. Good stuff." Read more

    "...Saved me a bunch in replacement costs and was super easy to use." Read more

    "...And it seemed to spread/roll on pretty easily...." Read more

    "...repair work during cold temps (about 45 degrees F) and the application went easily...." Read more

    30 customers mention30 positive0 negative

    Customers are satisfied with the appearance of the sealant. They mention that it looks good, creates a shiney surface, and is not tacky. Some customers also appreciate the color matching and the ease of use. Overall, customers are happy with the product and recommend it to others.

    "Very strong material . Fairly smooth and shiny . Went on fairly thick ...." Read more

    "...told that I am a terrible painter and this product, after applied, looked great. The layer of material was smooth and looked good (white in color)...." Read more

    "...I do love the stark white color—a very clean look. Other than the minor glitch, I am happy so far with the results." Read more

    "...-Worked as a good non-slip grip (as advertised) and was not tackyCons:-Not recommended if you need adhesive capabilities...." Read more

    63 customers mention32 positive31 negative

    Customers are mixed about the value of the sealant. Some mention that it's worth every penny, saved them a bunch in replacement costs, and has great quality for the price, while others say that it is overpriced and a waste of money. Some say that the advertising is a bit exaggerated.

    "...Looks like I just did it. Easy to keep clean. A year later 👍. Worth every penny 🤗..." Read more

    "...the size of 1/2 boiled egg} Disappointed for sure for very expensive product." Read more

    "Used this on my trailor canopy. Saved me a bunch in replacement costs and was super easy to use." Read more

    "This stuff is expensive as hell- but works like a CHARM on my decrepit roof in the Floridian weather!!🌴☀ I am much too poor to afford a new roof...." Read more

    61 customers mention27 positive34 negative

    Customers are mixed about the quality of the sealant. Some mention that it's holding up really well so far, and will last a long time. However, others say that it didn't hold up, the material isn't great, and crumbles.

    "...Positive side of poor quality Binder: After it cures for six months to a year, I found that it can be painted over I assume because the repellent..." Read more

    "...Has held up great for 2 years. Knew of a leak when I first used it and it stopped the leak...." Read more

    "...10 rolls of metal to cover rakes, windows, doors, etc. and EVERY ROLL HAS FAILED. The PVC is peeling off the metal, only 6 years after wrapping...." Read more

    "...Goes on nice and self leveling. Rubbery and seems like it will last a long time." Read more

    58 customers mention38 positive20 negative

    Customers are mixed about the water resistance of the sealant. Some mention that it's better than new, it'd be water proof, and very hydrophobic once it cures. That said, some say that it takes a long time to cure and that the material in the can will dry quickly.

    "...The basement floor is dry. I'm going to apply Flex Seal around more of the perimeter. I can't believe how well it worked." Read more

    "...allot yourself time to apply all the coats because the material in the can will dry quickly..." Read more

    "Very hydrophobic once it cures...." Read more

    "...This product adheres very well to a cleaned surface and dries to a hard, smooth rubber feel. It handles the Summer heat well so far...." Read more

    38 customers mention20 positive18 negative

    Customers are mixed about the adhesion of the sealant. Some mention that it adhered well, covered well, and seems to be waterproof, while others say that it doesn't stick to some surfaces and that it does not take paint well. Some customers also mention that the liquid version sticks to the brush so much it is very hard to use it at all.

    "...The product is very thick and does not go on like paint, more like trying to paint with caulk. It covers nicely and self levels...." Read more

    "...Also this product will not stick to a set of camp wall where the hydraulic coatings will stick...." Read more

    "...seal that I rolled on has an almost rubbery feel so it provides more than enough grip...." Read more

    "...Worked like a champ. Stuck TOO well to some vinyl that I touched by accident...." Read more

    Flex Seal on my concrete patio deck.
    4 Stars
    Flex Seal on my concrete patio deck.
    The desired project was resurfacing our pool deck. We considered polyurethane to liquid rubber products. We entertained four different companies with estimates ranging from $4200 to $7400 . Ultimately we decided to mostly do the job ourselves. We chose the Flex seal products after talking to customer service asking about application, temperature with strong sunlight as we live in Florida and slickness. We were told not hot or slippery when wet. After following all of the steps, primer, white flex seal with colored flakes then a clear coat of flex seal, the deck is not hot at all but we are finding it slick.
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    Top reviews from the United States

    Reviewed in the United States on February 10, 2024
    One person found this helpful
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    Reviewed in the United States on February 24, 2024
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    Reviewed in the United States on March 26, 2018
    Customer image
    4.0 out of 5 stars Sticks well to Gutter - Easy to Apply
    Reviewed in the United States on March 26, 2018
    I purchased the 16-oz can of the Flex Seal (White) to seal all the seams on my gutters around my pool lanai, which are over 20 years-old. With the hot, Florida sun and constant summer rains, my gutters began leaking around the seams where the corners meet. I also had a vertical gutter drain pipe that was hit by one of the landscapers that leaked quite a bit during the heavy rains.

    Overall, the seal is very easy to work with when using a 1" brush on the horizontal surfaces. The vertical gutter drain was a bit more time consuming because the laws of gravity wanted to allow the seal to drip down and out of the hole (applying plastic kitchen wrap around the seal did the trick). The key is to thoroughly clean/prep the area before applying. Once I cleaned the area, I poured a liberal amount around the seam and used the brush to apply evenly along the bottom and sides of the seam. My only concern is durability; how long will the seal stick to the gutters once they start to heat up again during our hot and rainy summer months. If I can get 5 years worth of seal, I'll upgrade my review to 5 stars.
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    14 people found this helpful
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    Reviewed in the United States on December 10, 2023
    2 people found this helpful
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    Reviewed in the United States on December 17, 2023
    3 people found this helpful
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    Reviewed in the United States on September 15, 2023
    3 people found this helpful
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    Reviewed in the United States on May 6, 2022
    6 people found this helpful
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    Top reviews from other countries

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    SL
    5.0 out of 5 stars Serve the purpose
    Reviewed in Canada on December 13, 2023
    Client d'Amazon
    5.0 out of 5 stars super de bon produit et j’espère de refaire affaire avec vous
    Reviewed in Canada on July 15, 2023
    Sara Patricia Loza de Ruiz
    5.0 out of 5 stars Buena idea de pintura
    Reviewed in Mexico on August 12, 2019
    Client d'Amazon
    1.0 out of 5 stars Retour
    Reviewed in Canada on August 22, 2023