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BEEST

BEEST Liquid Rubber Waterproof Sealant Black, 32 Oz Covers up to 6-10 Sq ft| Roof Sealant Waterproof Coating for Indoor & Outdoor Leak Repair| Easy to Apply Waterproofing Foundation Sealer

  • Based on 151 reviews
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Returnable until Jan 31, 2026

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Availability: In Stock.
Fulfilled by Amazon
Arrives May 28 – May 29
Order within 1 hour and 25 minutes
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Style: 32 oz


Features

  • CONTRACTOR-GRADE WATERPROOF COATING: BEEST Waterproof Sealant creates an impenetrable barrier against water, providing ultimate damp-proofing and waterproofing for your surfaces. Its permanent bond and vapor barrier properties ensure your protection against moisture, making it the perfect waterproof coating for almost any job.
  • Coverage Guidelines: For vertical surfaces, 1 gallon covers approximately 35 sq ft (2.8 sq m) with 3-4 heavy coats to achieve a 30 mil (0.76 mm) membrane. For flat or ponding surfaces, 1 gallon covers approximately 25 sq ft (1.4 sq m) with 4-5 heavy coats to achieve a 60-80 mil (1.5-2 mm) membrane.
  • BUILT FOR EXTREME CONDITIONS: Our sealant is an ultra low VOC, heavy-duty asphalt emulsion infused with polymers. This unique formula ensures resilience against harsh temperatures, weather challenges, and vibrations, providing unwavering waterproof confidence in any situation. Its liquid rubber application dries to a tough, flexible, and UV-stable finish, making it the ideal choice for waterproofing projects indoors and outdoors.
  • THE ULTIMATE DIY WATERPROOFER: BEEST Waterproof Sealant is tough and versatile enough to tackle almost any waterproofing project. Ideal for roofs, gutters, sheds, planter boxes, and more. From cement, brick, and block, to wood, metal, and more; BEEST Waterproof Sealant has you covered.
  • NO HASSLE APPLICATION: Ensure surface is free of oil, grease, dirt, or other particles that could inhibit adhesion, open your pail of BEEST Waterproof Sealant and MIX THOROUGHLY.
  • MADE IN THE USA BY AMERICAN FAMILY-OWNED COMPANY: BEEST is a USA-based company located in Carlisle, Pennsylvania. All BEEST products have a 100% satisfaction guarantee and excellent USA customer service members waiting by the phone to answer any questions you may have. BEEST continues to work hard to deliver top-quality sealants and cleaners for your projects!

Description

Introducing BEEST Waterproof Sealant - the ultimate solution for all your indoor and outdoor waterproofing needs. This multipurpose liquid rubber coating (compare to flex-seal or clear flex seal) is designed to provide a flexible and durable finish that effectively repairs leaks and protects most surfaces. Whether you need foundation waterproofing, a waterproof glue sealant, or a silicone roof coating, BEEST Waterproof Sealant has got you covered. With its low VOC water-based formula, this clear flex seal spray is not only easy to apply but also environmentally friendly. Say goodbye to water damage and hello to a strong and long-lasting seal with BEEST Waterproof Sealant, the liquid rubber foundation sealant you can trust.

Material: Rubber


Brand: BEEST


Style: 32 oz


Item dimensions L x W x H: 3.5 x 3.5 x 8 inches


Water Resistance Level: Waterproof


Product Dimensions ‏ : ‎ 3.5 x 3.5 x 8 inches; 2.51 Pounds


Item model number ‏ : ‎ B-5020


Date First Available ‏ : ‎ June 7, 2023


Manufacturer ‏ : ‎ Petra


Best Sellers Rank: #75,273 in Tools & Home Improvement (See Top 100 in Tools & Home Improvement) #224 in Hardware Sealers


#224 in Hardware Sealers:


Customer Reviews: 3.8 3.8 out of 5 stars 151 ratings


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: May 28 – May 29

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

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Leasing options through Acima may also be available during checkout.

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Similar Products

Top Amazon Reviews

    • Works great
Style: 5 Gallon
Review Image by Damian fellove Damian fellove
Review Image by Damian fellove Damian fellove
Great so far
Reviewed in the United States on September 29, 2025 by Damian fellove Damian fellove
    • Use gloves
Style: 1 Gallon
Very good product and easy to use
Reviewed in the United States on September 20, 2025 by Allen Hayford
    • Junk. Buy the some other brand
Style: 1 Gallon
This stuff is terrible. I mixed it up and used a brush to apply it and it didn’t work at all. Don’t waste you money. Horrible value for the money
Reviewed in the United States on July 18, 2025 by Ryan
    • Easy to apply.
Style: 1 Gallon
Worked, easy to apply. Used a paint brush on a rubber roof.
Reviewed in the United States on October 31, 2024 by Amazon Customer
    • Really helped with my leaky garage.
Style: 1 Gallon
3 sides of my garage are built 3 feet underground. Seller didn’t disclose it floods. This stuff is great. It really helped with two of the leaking walls.
Reviewed in the United States on March 10, 2025 by Drew House
    • Thinning agent used for too thick sealant.
Style: 5 Gallon
Received 5 gallon container of sealant. Tried to stir to mix contents and it was so thick it took forever. Tried to apply sealant, using roller, and it would not spread; kept sticking to roller. We added mineral spirits as thinning agent and finally got the consistency needed to apply sealant. We used one gallon of mineral spirits to a 5 gallon container of sealant. ... show more
Reviewed in the United States on August 17, 2025 by Nancy Nelson
    • Solid sealer!
Style: 1 Gallon
Had a few areas on a flat roof that appeared to be cracked and getting water leaks inside. Used a big paint brush to apply liberally to damaged areas. Washed stains from inside walls. Never another leak! This stuffs fantastic! Easy to apply, dries relatively fast too. Stays pliable. I will definately buy this again if this problem rises. I highly recommend! One gallon did a wide area too! ... show more
Reviewed in the United States on September 18, 2024 by kim winter
    • Stopped a roof leak I couldn’t locate.
Style: 1 Gallon
Had a small roof leak on a very shallow pitch shingle roof. I knew the general area where the hole had to be. Poured about half the can on the shingles, spread it out with a paint roller. Next time it rained, no leak!!!
Reviewed in the United States on September 17, 2024 by Neal Cooper

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