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4.5 out of 5 stars. 384 reviews
product-image

Flex Seal 2.5 gal. Liquid MAX White Liquid Rubber Sealant Coating

4.5

(384 Reviews)

|

Item # 192942299

$239.99
A woman outside with a dog
A woman outside with a dog

Flex Seal 2.5 gal. Liquid MAX White Liquid Rubber Sealant Coating

Flex Seal 2.5 gal. Liquid MAX White Liquid Rubber Sealant Coating

Item # 192942299

Flex Seal Flex Seal 2.5 gal. Liquid MAX White Liquid Rubber Sealant Coating
Flex Seal Flex Seal 2.5 gal. Liquid MAX White Liquid Rubber Sealant Coating


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Flex Seal 2.5 gal. Liquid MAX White Liquid Rubber Sealant Coating

Item # 192942299

Flex Seal Flex Seal 2.5 gal. Liquid MAX White Liquid Rubber Sealant Coating
Flex Seal Flex Seal 2.5 gal. Liquid MAX White Liquid Rubber Sealant Coating

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Flex Seal LIQUID MAX is a thick rubberized liquid that you can brush, roll, dip or pour. It starts out as a thick liquid and dries to a strong, flexible, watertight, rubberized coating. Seals out air, water and moisture and is mildew, chemical and UV resistant. Available in black, white, clear, and gray. Flex Seal Liquid is perfect for:Flex Seal Liquid works on: Concrete, glass, brick, stucco, masonry, wood, copper, plastic, tile, fabrics, wires, vinyl, fiberglass, ceramic, porcelain, metal, aluminum, natural stones, foam, asphalt, EIFS, TPO, PVC, EPDM, CSPE, Hypalon polyurethanes and more. Available in pints (16 oz.), quarts (32 oz.) and gallons (128 oz.).

  • Concrete and asphalt repair
  • Foundation repair and preventing basement seepage
  • Weatherizing and sealing out moisture
  • Home and roof repair
  • RV and motorhome weatherizing and repair
  • Pools and pool equipment
  • Outdoor ponds and bird baths

Q&As

1 - 3 of 3 Questions

Q: Can this product be used on the exterior of a concrete foundation to repair cracks?

a year ago
1 Answer
  • A: Hi Kuma Flex Seal Liquid works on: Concrete, glass, brick, stucco, masonry, wood, copper, plastic, tile, fabrics, wires, vinyl, fiberglass, ceramic, porcelain, metal, aluminum, natural stones, foam, asphalt, EIFS, TPO, PVC, EPDM, CSPE, Hypalon polyurethanes and more
    a year ago
    Helpful?

Q: I will be doing the inside of a 8 foot round heavy aluminum tub that we made a pool out of that is showing rust. After cleaning the rust how many gallons do you think it will take to do the entire interior in white liquid?

a year ago
1 Answer
  • A: Hello Neighbor! I do not know how deep your pool is. I would purchase 3 of this product and have some left over possibly. You can return to the store an unopened container for 30 days.
    a year ago
    Helpful?

Q: We wanted to use this on south facing old wood siding that has started to leak. Can it be painted over with exterior paint?

2 years ago
1 Answer
  • A: per the manufacturer's page: Flex Seal Spray can then be painted over with almost all commercially available paints and urethanes. Flex Seal Liquid cannot be top coated with anything other than Flex Seal Liquid, however, you can add as many coats as you like. Since this is the liquid version, it can not be painted over with exterior paint.
    2 years ago
    Helpful?

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Reviews

Rating Snapshot

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293 reviews with 5 stars.
47 reviews with 4 stars.
19 reviews with 3 stars.
5 reviews with 2 stars.
20 reviews with 1 star.

Overall Rating

4.5
223 out of 234 (95%) reviewers recommend this product

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Summary of Reviews

AI-generated from customer ratings & reviews, and may include incentivized reviews.
The product is reported to effectively seal a variety of leaks and cracks, with the liquid version being particularly effective on wet surfaces and underwater. Customers praise the ease of application and versatility of the product for DIY projects. However, a small number of customers experienced i...
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1 to 4 of 384 Reviews .
1 – 4 of 384 Reviews
29 PALMS, CA
Review 1
GenderMale
Age65 or over

EVERYTHINGS DUCKY

2 years ago
USED IT TO COAT THE INSIDE OF AN 8 FOOT ROUND METAL TUB (SO IT WON"T RUST) THAT WE GOT FOR OUR DUCKS TO USE AS A SWIMMING POOL.

Yes, I recommend this product.

Originally posted on flexsealproducts.com

Response from flexsealproducts.com:
2 years ago
Flex Seal Family of Products Customer Care
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@flexsealproducts.com. Flex On!
Review 1
GenderMale
Age65 or over

Flex Seal Liquid - pint

2 years ago
Product works, but despite my securely closing the lid between usage, a portion of the remaining contents start to solidify, requiring removal of that portion to get to useable material.

Yes, I recommend this product.

Originally posted on flexsealproducts.com

Response from flexsealproducts.com:
2 years ago
Flex Seal Family of Products Customer Care
Hi there, thank you for taking the time to share your feedback with us. We're sorry to hear that Flex Seal did not live up to your expectations. When you have a moment, please send us an email at humans@flexsealproducts.com so we can turn your experience around. We look forward to hearing from you, have a great day.
Washington DC
Review 1
GenderMale
Age55 to 64

Looks Like it Will do the Job

2 years ago
The clear coat went on easily and sealed up the seams in my basement cinderblock wall, keeping out rainwater. The Flex Seal couldn't be cleaned from my brush, so I switched to cheap throw-away brushes. During painting and curing, Flex Seal had a very strong odor which permeated the entire house and took 2 days to disperse, even with open windows in the work area and vent fans going full blast. The dried coat is glossy, which makes the painted area reflective and look wet; a flat finish would be much better and non-glare. The Flex Seal liquid did not require mixing, just open the can and apply.

Yes, I recommend this product.

Originally posted on flexsealproducts.com

Response from flexsealproducts.com:
2 years ago
Flex Seal Family of Products Customer Care
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@flexsealproducts.com. Flex On!
Kentucky
Review 1
GenderMale
Age65 or over

Repaired cracked rain barrel.

2 years ago
Very surprised, 55 gal resin rain barrel froze and split at the seam

Yes, I recommend this product.

Originally posted on flexsealproducts.com

Response from flexsealproducts.com:
2 years ago
Flex Seal Family of Products Customer Care
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@flexsealproducts.com. Flex On!