Flex Seal LiquidRubber Coating Sealant, Waterproof, Flexible, Breathable, and UV Resistant, Roof Repair, Basements, RV, Campers, Trailers, Marine, EPDM, Masonry, Black, 1 Gallon
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Flex Seal LiquidRubber Coating Sealant, Waterproof, Flexible, Breathable, and UV Resistant, Roof Repair, Basements, RV, Campers, Trailers, Marine, EPDM, Masonry, Black, 1 Gallon

4.3/5
Product ID: 35069452
Secure Transaction
12 interest-free installments with tabby

Details

  • Material
    Rubber
  • Brand
    Flex Seal
  • Style
    Compact
  • Item Weight
    128 Ounces
  • Item dimensions L x W x H
    6.5 x 6.5 x
💧100% Waterproof Seal
🖌️Versatile Application Methods
🛡️UV & Chemical Resistant

Description

🛠️ Seal it, protect it, flex it—your ultimate waterproof armor!

  • RUST CORROSION DEFENSE - Prevents metal degradation, extending the life of your roof, gutters, and marine gear.
  • BUILT TO LAST UNDER THE SUN - UV resistant formula ensures your repairs stay strong and fade-free, no matter the weather.
  • ONE GALLON ENDLESS POSSIBILITIES - Compact yet powerful size covers large areas—ideal for professional-grade repairs and DIY projects alike.
  • WATERTIGHT PROTECTION GUARANTEED - Brush, roll, dip, or pour on a seamless rubber barrier that locks out water and moisture.
  • FLEXIBLE BREATHABLE RUBBER COATING - Adapts to surface movement without cracking, perfect for RVs, trailers, and masonry.

Flex Seal Liquid is a premium, black rubberized coating that provides a flexible, waterproof, and UV-resistant seal. Suitable for multiple surfaces including wood, metal, glass, and plastic, it prevents rust and corrosion while offering versatile application methods. Packaged in a convenient 1-gallon size, it’s perfect for professional and home repairs on roofs, basements, RVs, and marine equipment.

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Specifications

MaterialRubber
BrandFlex Seal Liquid
StyleCompact
Item Weight128 Ounces
Item dimensions L x W x H6.5 x 6.5 x 7.75 inches
Compatible MaterialWood, Glass, Plastic, Metal, Polyvinyl Chloride
Water Resistance LevelWaterproof
Item FormLiquid
UPC853517006306
Unit Count1.0 Count
Global Trade Identification Number00853517006306
Number of Items1
ColorBlack
Surface RecommendationGutter
ManufacturerSwift Response, LLC
Part NumberLFSBLKD01
Item Weight8 pounds
Product Dimensions6.5 x 6.5 x 7.75 inches
Item model numberLFSBLKR01
Is Discontinued By ManufacturerNo
Size1-gal
Item Package Quantity1
Included ComponentsGallon Flex Seal Liquid
Batteries Included?No
Batteries Required?No
Warranty Description1

Have a Question? See What Others Asked

Can this be used in 1" space between concrete slabs on a driveway?
Can this product be used to seal cracks in an asphalt driveway?
What temperataures are the best for application of Flex Seal?
How much area can a 32oz can cover?? please and thanks

Reviews

4.3

All from verified purchases

S**R

Great rubberizing product

I brushed this on a custom canvas top I made for my 1960’s military truck. Works amazing. I have used it in the past for sealing metal shipping containers and semi trailer roofs. Great stuff!

G**N

Easy to use

I used this to fill cracks in my asphalt driveway previously. It’s expensive but lasted a few years so when more cracks appeared I bought more and filled the new cracks. If the cracks run deep I backfill with sand and pour the Flexseal over the top. It lays out flat on its own and dries within 24 hours in summertime temps.

J**S

Water resistant

Having been familiar with Flexseal in a spray can, I needed a gallon to apply to the steel powdered finish on my gazebo that started to rust, applying with a roller and only having 12-15 hours of drying time before a day of 12 hours of rain ( directions call for 24 hours drying time) I watched the rain run off like it does on a highly waxed auto…it was all I expected ….temp was in mid 70’s and sunny …this is the only product I thought could handle the job..wear old clothing, rubber gloves and cover areas to be protected….worth the money it costs

J**S

My son saved $850 using this product and I have solved several problems with Flex Seal Liquid.

I purchased this for my Son and he is very pleased with the application a durability of Flex Seal Liquid. Instead of spending $1000 on Rhino Lining his truck again, he used Flex Seal Liquid. He rolled his entire truck bed with it. He put 4 coats on his Chevy Silverado with an 8ft bed. He used 1 and 3/4 gallons to complete the job. It is thick and can handle the hard knocks. The look of it is actually more attractive than Rhino Lining. Update: I also used Flex Seal to repair the interior of my Honda Accord. There are plastic parts inside the car that have deteriorated over time from the heat and sun in Florida. The plastic became tacky and was coming off onto everything that touched it. My hands were constantly getting sticky and it actually ruined a few pieces of my clothing. I taped up the areas surrounding that plastic and applied Flex Seal. It became hard over night and and now those parts actually look better now than they did when the car came from the factory. I must add that the quality of the liquid Flex Seal seems to produce much better results than the spray. I've used the spray on a few items around the house and it does not apply as evenly as they liquid and is no where near as durable as the liquid. This product is absolutely fantastic! There is no doubt in my mind that boat cut in half in the commercial was indeed repaired with Flex Seal. It is the real deal!

T**N

Not satisfied with this transaction

Product arrived so damaged it can not be used without wasting the product no way to reseal the can. Lid and can to badly damaged.

R**N

Great product but delivery, not so good.

Second time I've ordered this great product. Just the answer to my leaky roof. But it seems that the company doesn't use the JUST-IN-TIME approach to fulfilling orders. When AMAZON sent an email as to the delivery date as TOMORROW, I was happy to know that Id's be receiving it at long last.But when it didn't come I checked my email agin and it said NOW ARRIVING AT ******** which was a week later.Not blaming AMAZON because its the company that needs to get it's DELIVERY DEPARTMENT in order.I think they should investigate a book called THE TOYOTA WAY. It will be a good guide to reliable shipping practices.

L**R

great product for sealing roof leaks

great product for sealing leaks on shingled roof

P**R

Awesome Stuff

I have a 15 year old, 16' cargo trailer we take to our job sites. I replaced the skylight and needed a way to seal it properly. Regular silicone didn't do the trick and I considered roofing tar. I found this product and was a bit familiar with it and it's claims to seal.Well I gave it a shot to seal the skylight and it worked great. I then decided to order more and coat the entire roof and patch over the original sealant used when the trailer was built. The roof is galvanized and had a little coating of rust. I lightly sanded the surface to rough it up and applied the Flex Seal.I'm very happy with the results.The original sealant had separated in a few spots around the perimeter and this easily sealed those areas.I used a full gallon plus 2 pints to complete the job. I was pretty liberal with the application. It's thick stuff so it's not like spreading paint. I used a 4" wide paint brush and a disposable 2" brush for the detail areas.WEAR CRAPPY CLOTHES when applying. It seems to get everywhere-and I'm very neat! Disposable rubber gloves are a plus.

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Best international shipping I've ever tried. Worth every penny!

3 days ago

Yusuf A.

Fantastic experience overall. Will recommend to friends and family.

1 month ago

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Secure Transaction
12 interest-free installments with tabby

Trustpilot

TrustScore 4.5 | 7,300+ reviews

Farhan Q.

The delivery time was excellent, and the packaging was secure.

2 months ago

Abdullah B.

Great price for an authentic product. Fast international shipping too!

3 weeks ago

Flex Seal Liquidrubber Coating Sealant Waterproof Flexible Breathable And Uv | Desertcart KSA