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Liquid Rubber Basement and Foundation Repair Sealant - Waterproof Concrete Sealer & Crack Filler - Flexible Coating for Indoor & Outdoor Use - Waterproofing Paint - Black, 5 Gallon

  • Based on 2,946 reviews
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Availability: In Stock.
Fulfilled by Amazon

Arrives Saturday, Aug 15
Order within 13 hours and 42 minutes
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Color: Black


Size: 5 Gallon


Features

  • SUPERIOR FLEXIBLE SEALANT: Liquid Rubber's foundation sealer creates a permanent waterproof membrane for basement waterproofing, foundation leak repair, shower liners, and planter boxes. This professional-grade sealer delivers unmatched protection with 900% elongation, preventing leaks and water damage more effectively than traditional sealants
  • COMPLETE BASEMENT WATERPROOFING SYSTEM: Surpassing basic concrete paint, concrete sealers, and standard waterproof agents, this waterproofing membrane is designed to seal and protect against active leaks and moisture, making it perfect for basement leak and foundation repair. Seamlessly compatible with self leveling concrete applications
  • VERSATILE CONCRETE CRACK FILLER: The professional-grade rubber coating and rubber waterproofing technology maintains flexibility in all temperatures, preventing future cracks and damage. This liquid rubber waterproof sealant provides superior adhesion to concrete, masonry, wood, metal, and foundation surfaces, making it an ideal choice for your DIY projects
  • MAXIMUM COVERAGE & PERFORMANCE: This high-build basement sealer goes on like waterproof paint - Interior basement surfaces: 50 sq ft/gallon (requires: 2-3 coats), Exterior concrete sealer outdoor surfaces: 20 sq ft/gallon (requires: 3-4 coats). Apply between 50F-90F. For complete protection, use the rubber sealant with Liquid Rubber Geo-Textile on joints and transitions
  • IMPORTANT USAGE GUIDELINES: The water-based foundation sealer formula contains zero VOCs for safe indoor application. No mixing required! Apply by brush, roller, or professional sprayer as part of your basement waterproofing system. Not suitable for walking surfaces due to tackiness when cured
  • FOR A WATERTIGHT SYSTEM - Use rubber sealant with Liquid Rubber Geo-Textile on joints and transitions, fill small cracks with Liquid Rubber Sealant & Adhesive, and bridge joints, seams, vents, and protrusions where movement may occur. Scroll down for full application steps

Material: Polymer


Brand: Liquid Rubber


Style: Protective


Item Weight: 19.8 Kilograms


Item dimensions L x W x H: 12 x 12 x 16 inches


Brand Name: Liquid Rubber


UPC: 628421206025


Unit Count: 640 Fluid Ounces


Number of Items: 1


Part Number: 20602


Model: 20602


Manufacturer: Liquid Rubber USA


Included Components: 5 Gallon


Water Resistance Level: Waterproof


Item Form: Liquid


Compatible Material: Cement, Concrete, Engineered Wood, Masonry, Wood


Item Weight: 19.8 Kilograms


Item Dimensions: 12 x 12 x 16 inches


Style Name: Protective


Color: Black


Surface Recommendation: Poured concrete, Concrete masonry units (CMUs), Insulated concrete forms (ICF), Pre-cast and permanent wood foundations (PWFs), Wood (with proper priming and preparation)


Material Type: Polymer


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Saturday, Aug 15

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Top Amazon Reviews


  • Does what I'd hope it would do!
Size: 1 Gallon
I used this product over a freshly cured hydraulic cement patch on the interior wall of a my slab basement. I had a small seepage issue from an old, repaired, crack. The old repair (about 20 yrs old) consisted of a resin/epoxy injection for a large crack. Over the years, the foundation settled, and the crack re-opened in a few spots. I applied two layers of hydraulic cement and let it cure over a few days. Then, I applied the liquid rubber sealant over the patched area and the surrounding foundation. I completed 3 coats in total waiting 14-16 hours between each coat. NO LEAKS. I can't say this product itself stopped the leak, but in conjunction with a crack patch, it seems to have solved my issues. Things I really liked about this product: 1. It seems to work! 2. No noxious odors - There is a faint "something" in terms of smell, but definitely not unbearable in any way. 3. This consistency means application is easy. It really does have the consistency of store bought chocolate pudding after its been in the fridge. Kinda goopy, but easy enough to work with 4. Quick-ish dry and cure. I waited roughly 14 hrs between each coat (pretty thick coat at that). My only negative doesn't have much to do with the performance of the product. Rather, I simply didn't need an entire gallon of this stuff. I wish there was an option to purchase it by the quart, as I think I used roughly 3/4 of a quart for my repair. I will undoubtedly have another use for it in the future, but right now, its just another paint can in the paint can area of my garage. If you're trying to do what I did in terms of an interior basement foundation crack repair, give it a shot! It works! ... show more
Reviewed in the United States on February 5, 2019 by Dipstix585

  • Very happy
Size: 5 Gallon
Very good product and very very good price. I am very happy with the purchase and intend to buy again in the near future. Shipping was on time and the product is great quality. Very happy customer. I used this on my basement and it worked great. And I have plenty left over.
Reviewed in the United States on September 16, 2024 by Nathan Robinson

  • Good Product
Size: 1 Gallon
Worth the money and easy to work with.
Reviewed in the United States on March 20, 2024 by R. Jones

  • This is the most reasonably priced way to waterproof your basement!
Size: 5 Gallon
Considering the cost, the actual high quality of the product and the "relative" ease of application to exterior and interior walls; I believe this to be one of the BEST products on the marketplace! I am a retired licensed civil and mechanical engineer and in my late 60's, so I know and appreciate a good quality product when I see and use one!. I can afford to have someone else do my odd jobs or even quasi-major ones like basement waterproofing. However, I'm retired with too much time on my hands and this "waterproofing" job needed to be done so, in the interests of brevity here goes. First off, apply this stuff to clean (scraped, sanded, or repatched holes in basement walls be they cinderblock or fieldstone) surfaces. In my case I had to scrape out the old lime based cement used in-between the fieldstone foundation of my community walled 120 year old, Brooklyn Brownstone, rowhouse because after so many years it just disintegrated, allowing moisture and water invasion. I plugged up the joints holes with hydraulic cement (relatively inexpensive, even on this site OR from a big box) let them dry because hydraulic cement dries so fast tyou can only use very small batches at a time. I did not say this was fast work, however it ain't rocket science either so all you need is time and patience. Though I did not need to do so, I covered my interior basement walls with Sakcrete "topping or patching" cement which is premixed and applies easily AND has a long work time to batch size ratio. I felt that the Liquid rubber foundation sealant product would have better "purchace" or attach better to the coated rock schist surface. That being said, after all surfaces were prepared it was a simple matter of applying (in my case with a whitewash brush but on flat surfaces such as a cement block wall, a roller with a medium "nap" will work fine) the material. I would recommend applying between 60 to 80 degrees F. for best, even drying times but of course humidity will be a factor. This product dries medium "tacky" so I would allow a few extra days drying time if that's within your work time frame and IF you intend to paint over the rubber material which is black. There is no reason NOT to,leave it black but I find a white or light color helps with light dissemination and seems a little more pleasant to look at. Essentially, those are the instructions on the can but if you go to their website (also on the can and on Amazon's product webpage description) you can find more info on applications/ coatings, etc.! I highly recommend this stuff, I've used many other brands in similar situations including the funny looking and sounding guy on TV in his "flexibly sealed rubber coated screen boat," and I find this material not only more effective but MUCH less expensive by far whilst being a far superior product to use. ... show more
Reviewed in the United States on November 13, 2019 by Audiophile MB (Marco B.-NYC)

  • I'm using it on a pressure treated outdoor structure that has rotted in the past. Seems good.
Size: 1 Gallon
Just what I was looking for, some tar-like substance that is thin and "paintable" to put on an outdoor pressure treated structure that has rotted in the past when left untreated. Does seem kind of expensive, but since it look like its working I guess I can't complain.
Reviewed in the United States on October 6, 2024 by Ken Levine

  • Durable Foundation Sealant
Size: 5 Gallon
Very well package when it was delivered Very easy to stir up Very easy to applied Covers well -
Reviewed in the United States on September 25, 2024 by Larry I

  • Work nicely for bathroom renovation: bathtub to shower conversion
Size: 1 Gallon
Nice product. Good delivery deadline
Reviewed in the United States on November 1, 2024 by vincevng

  • Delighted
Size: 1 Gallon
I had a leak in the basement coming from the concrete outside. I bought the sealant and patched up everything outside. Several torrential rains later, to my delight, no more leaks. I hadn't even started to seal from the inside yet and it's been 6 months
Reviewed in the United States on December 8, 2024 by Crystyl Clear

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