Flex Seal MAX Liquid Rubber Sealant Coating, 2.5 Gallon, White
Flex Seal MAX Liquid Rubber Sealant Coating, 2.5 Gallon, White
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Flex Seal MAX Liquid Rubber Sealant Coating, 2.5 Gallon, White

4.5 stars out of 482 reviews
(4.5)|
482 ratings
Flex Seal MAX Liquid Rubber Sealant Coating, 2.5 Gallon, WhiteFlex Seal MAX Liquid Rubber Sealant Coating 2 5 Gallon WhiteFlex Seal MAX Liquid Rubber Sealant Coating 2 5 Gallon Black
Actual Color:White

Key item features

  • Versatile Application: Thick rubberized liquid that you can brush, roll, dip, or pour
  • Watertight Seal: Dries to a watertight, airtight, flexible, rubberized coating
  • Large Coverage: Perfect for covering large surface areas
  • Durable Protection: Mildew, chemical, and UV resistant
  • Convenient Size: Comes in a larger 2.5 gallon size with a resealable easy pour spout
  • Non-Toxic: Contains no harmful vapors, making it safe to use
  • Weatherproof: Seals and protects surfaces from the elements and extreme temperatures
  • Multi-Purpose: Ideal for use on roofs, gutters, floors, basements, and more
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Current price is Now $196.99
You save $42.88
was $239.87
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Columbus, 43215
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Sold and shipped by Sports-Med
4.61056466302368 stars out of 5, based on 2749 seller reviews(4.6)
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Customer ratings & reviews

4.5 out of 5 stars
stars482 ratings335 reviews
How item rating is calculated
  1. 5 stars75% (363)
  2. 4 stars12% (59)
  3. 3 stars5% (24)
  4. 2 stars1% (6)
  5. 1 star6% (30)

Reviews summary

Pros
  • : Forms a strong barrier to prevent water entry.
  • : Fills small cracks and crevices immediately.
  • : Application process is straightforward with a brush or pouring.
  • : Product has a transparent or see-through quality.
  • : Forms a secure barrier to prevent liquid escape.
Neutral
  • : Can be affordable, but also steep for certain features.
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Showing 1-3 of 335 reviews

Aug 31, 2025
joseph
Item details
Color: White
5 out of 5 stars review

Verified Purchase

very pleased

great stuff. a bit expensive in these quantities but very effective if used properly

Helpful?248L0TL01Y16742891630
Oct 12, 2023
mtrctyjake
5 out of 5 stars review

Seller Verified Purchase

Liquid Rubber is the BEST!

I used Flex Seal liquid rubber on a hairline crack on outer basement wall, application went on easy, used two coats...I feel very confident this will solve my problem. I researched many different products and I believe this is the Best product for my problem...Lord willing I'll have no more leaks!

Review from flexsealproducts.com
Helpful?248L0TL01Y16742891630
reply from 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!

Apr 10, 2022
MOMMABEARNYC
5 out of 5 stars review

Seller Verified Purchase

FLEX SEAL SAVES THE DAY

We got hit with Hurricane Ida in Northeast Queens NY.. We never get hit..This is the first time this section was drowned!!! I truly feel for all those that were hit Katrina....so our basement was completely flooded...I decided to give Flex Seal a try last month...Yes...Last month...waiting for water to dry up and disinfect and clean...plus waiting for the Flex Seal to arrive...Well...Happy to report...very happy with the outcome...it has rained a lot here and thank goodness...not a drop has come through the walls or ground..My husband and dad covered the wall and ground with Flex Seal..last week..we put peel and stick tile...I'M SO GLAD I WATCHED ALL VIDEO'S AND TOLD MY HUSBAND AND DAD THAT WE ARE USING THIS!! MY DAD HAS USED THIS PRODUCT BEFORE.

Review from flexsealproducts.com
Helpful?248L0TL01Y16742891630
reply from Flex Seal Family of Products Customer Care

Hi there, thank you so much for sharing your 5 stars with us! We're happy to hear the Flex Seal Family of Products is working great for your projects and repairs. If you'd like some helpful tips and tricks for future DIY's, feel free to message us at Humans@FlexSealProducts.com. Flex On!