Search  for anything...

BEEST Foundation Sealant Black, 5 Gallon Covers up to 125-135 Sq ft| Multi-Surface Coating for Indoor/Outdoor Leak Repair| Liquid Rubber Waterproof Sealant - Easy to Apply Foundation Sealer, Low VOC

  • Based on 56 reviews
Condition: New
Checking for product changes
$142.95 Why this price?
Save $10.99 was $153.94

Buy Now, Pay Later


As low as $23.83 / mo
  • – 6-month term
  • – No impact on credit
  • – Instant approval decision
  • – Secure and straightforward checkout

Ready to go? Add this product to your cart and select a plan during checkout. Payment plans are offered through our trusted finance partners Klarna, PayTomorrow, Affirm, Afterpay, Apple Pay, and PayPal. No-credit-needed leasing options through Acima may also be available at checkout.

Learn more about financing & leasing here.

Selected Option

Free shipping on this product

30-day refund/replacement

To qualify for a full refund, items must be returned in their original, unused condition. If an item is returned in a used, damaged, or materially different state, you may be granted a partial refund.

To initiate a return, please visit our Returns Center.

View our full returns policy here.


Availability: In Stock.
Fulfilled by Amazon

Arrives Tuesday, Apr 29
Order within 11 hours and 46 minutes
Available payment plans shown during checkout

Style: 5 Gallon


Features

  • CONTRACTOR-GRADE COATING: BEEST Foundation 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.
  • 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 Foundation Sealant is tough and versatile enough to tackle almost any waterproofing project. Ideal for foundations, basements walls and floors, retaining walls, deck and fence posts, and more. From cement, brick, and block, to wood, metal, and more; BEEST Foundation 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 Foundation Sealant and MIX THOROUGHLY. Apply with a brush or roller, working the coating into the substrate, at an approximate rate of 1 gallon per 30 sq. ft. for best results.
  • 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!

Material: Polymer


Brand: BEEST


Style: 5 Gallon


Item dimensions L x W x H: 12 x 15 x 12 inches


Compatible Material: Rubber


Product Dimensions ‏ : ‎ 12 x 15 x 12 inches; 45.83 Pounds


Item model number ‏ : ‎ B-5030


Date First Available ‏ : ‎ October 19, 2023


Manufacturer ‏ : ‎ Petra


Country of Origin ‏ : ‎ USA


Best Sellers Rank: #170,035 in Tools & Home Improvement (See Top 100 in Tools & Home Improvement) #474 in Hardware Sealers


#474 in Hardware Sealers:


Customer Reviews: 4.4 4.4 out of 5 stars 56 ratings


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Tuesday, Apr 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.

  • Klarna Financing
  • Affirm Pay in 4
  • Affirm Financing
  • Afterpay Financing
  • PayTomorrow Financing
  • Financing through Apple Pay
Leasing options through Acima may also be available during checkout.

Learn more about financing & leasing here.

Top Amazon Reviews


  • Easy to use.
Style: 1 Gallon
I used it to coat my portable motorcycle tent.
Reviewed in the United States on January 10, 2025 by 2012CobraBlackHarley

  • stop leak
Style: 5 Gallon
good product
Reviewed in the United States on April 10, 2025 by ray h.

  • Works great
Style: 5 Gallon
Works great, be ready to get messy
Reviewed in the United States on April 17, 2025 by V. MILNE

  • Really works great.
This stuff works great. It is easy to use and dry's quickly when using a thin coat. Once dry it is a solid watertight bond a little rubbery. It adheres nicely to concrete and lightly abraded paint. Very happy with its performance. Great value.
Reviewed in the United States on February 2, 2025 by MPFTS

  • Does what it's supposed to do
Style: 1 Gallon
Does what it's supposed to do so far so good will the test will be during the winter and we will see after that I would be but for now this product is remarkable goes on easy put a paintbrush and it can be a little messy at times but it's a good product sticks to cement and definitely waterproof and dries quickly ... show more
Reviewed in the United States on October 17, 2024 by RELO

  • Great Customer Service and Product
Style: 5 Gallon
Ordered two of the (5) gallon buckets for the Foundation Sealant. Both arrived very thick and chunky, wouldn’t stick to the roller or the block wall. Called customer service for Petra and spoke with Mikki, she was able to confirm both buckets had went bad. She immediately had two replacement buckets sent out to me directly. After receiving them was able to use the product properly and it works great. Would definitely buy again for future needs. Mikki was also great to work with. ... show more
Reviewed in the United States on August 19, 2024 by Kyle Burdette

  • Really hard
Style: 5 Gallon
I opened the container to find their product hard like it was almost dry. I had to get another bucket scoop half out as a little water and mix. It finally came back to life and I was able to use most of it. I don’t know how long these have been on the shelf but it was almost not salvageable. Luckily I got my job done but just be weary of their products and ask them to check the product before shipping it. ... show more
Reviewed in the United States on February 25, 2025 by Terry Bushey

  • Easy to work with... takes a bit to dry
Style: 1 Gallon
Easy to work with... takes a bit to dry. I used it to protect stair stringers in the bulkhead. I let it sit for 48hrs and it will was soft. Also used it on an area where the bulkhead and the foundation meet up. Very easy to work with, used a small roller and a brush. I did 3 coats on everything, and it has very low to no odor. I think it will work well. I might get another gallon to keep on hand. ... show more
Reviewed in the United States on June 28, 2024 by Greener Greener

Can't find a product?

Find it on Amazon first, then paste the link below.