Model # 65450006

Internet #100350286

Store SKU #482626

SAKRETE 20 lb. Gray Leak Stopper


20 lb. Gray Leak Stopper

  • Fix leaks in pools or active leaks in concrete and masonry
  • Instant setting hydraulic cement
  • No form or brace needed
$18.99 /each

Frequently Bought Together

Product Overview

SAKRETE 20 lb. Gray Leak Stopper is designed to help stop water from leaking through concrete- and masonry breaks. This leak stopper can be used underwater. Dries to the color of concrete.

  • Helps stop the flow of water through breaks in concrete and masonry
  • Can help stop leaks underwater and under pressure
  • Great for leaks in pools
  • Instant-setting hydraulic cement
  • Mixture includes sand, cement and special additives
  • Just add water
  • 3,000 psi
  • Approximate 3 minutes working time
  • Learn more about concrete and cement here in our Buying Guide
  • Note: Product availability may vary by store

Info & Guides

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Warranty / Certifications

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Customer Questions & Answers

I have weeping masonry blocks in the finished basement. Will this stop the weeping?

Asked by: tony
No, this product is for patching and sealing cracks in concrete and cement block walls.
Answered by: Dale
Date published: 2017-01-28

Can this product seal a brick chimney that leaks?ebm44

Asked by: em44
Answered by: dan
Date published: 2016-12-27

Will it stop leaks on a wet wallor does it have to be completely clean and dry?

Asked by: Wcdad
Per the instructions and literature that I read it can be used not only on wet locations, but also where there is running water.
Answered by: RLD1427
Date published: 2017-03-01
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Customer Reviews

20 lb. Gray Leak Stopper is rated 4.5 out of 5 by 17.
Rated 5 out of 5 by from Definitely does the job, stops the water leaks dead. It is a medium to dark gray and will stand ... Definitely does the job, stops the water leaks dead. It is a medium to dark gray and will stand out against normal colored concrete and mortars. Sets very fast, I applied a half-hot-dog sized portion with my fingers, turned around to get my trowel to shape the patch and when I turned back to try and shape the repair it had already set; I had to wait until cured (couple of days) and used a grinder to shape and finish the repair. The label and instructions say that it sets within 3 minutes, they aren't exaggerating.
Date published: 2017-02-21
Rated 5 out of 5 by from SUPER STOPPER Had a couple of cracks in a basement wall that I found when remodeling. Had noticed wet spots on the carpet prior to this but wasn't sure where it was coming from. Recommend that you follow the instructions closely on this and it will work just fine. Stopped the moisture and the leak instantly. I waited a week or so just to make sure before starting to put in new wall covering, floor etch, but so far, excellent. Hoping it will last a long time and when I sell my house, the new owners will not have a problem either.
Date published: 2017-03-01
Rated 5 out of 5 by from Stops water in it's cracks. This Sakrete hydraulic leak stopper has worked great. It's gray color blends well with the cement blocks. The hydraulic effect securely sealed all the cracks in my wall and keeps the water from coming through. This is a brand that I have used for years. It is easy to use, simply mix 3 parts of powder to 1 part water, mixes in about a minute after stirring. Apply to cracks and it begins setting in 2-3 minutes.
Date published: 2017-01-24
Rated 5 out of 5 by from Works to fill cracks in cement even with water Upon opening the container the lid has a lip that makes it resealable. You could put the cement in ziploc bags for lasting added protection. The cement is a powder consistent with other brands. On the container it states hardens in three minutes and it does! Only mix what you can use in that time and wear gloves. I always mix with a polymer like sakrete bonder and fortifier as it makes it smoother and makes it adhere to the original concrete. I prefer to grind out the crack with an angle grinder than hammer it. On a horizontal surface I mix it to a liquid and pour it in making sure it gets down in the crack. On a vertical surface I use slightly less liquid and keep pushing it into the hole. Upside down I make it into a paste and work it in quickly. While it is wet you can smooth the surface or use a stone after it dries and then coating it with a thick paint to hide imperfections.
Date published: 2017-02-22
Rated 1 out of 5 by from Horrible I used to buy the 10 lb container all the time but I use this product a lot. When I found out that Home Depot doesn't carry it in store anymore I bought 40lbs online mixed it up and litterly 5 secs later hard as a rock qinised to have more time than that. Complete waste of money
Date published: 2016-12-06
Rated 5 out of 5 by from This is amazing stuff. It sets-up in about 5 minutes. Cures very hard and does not appear to sh... This is amazing stuff. It sets-up in about 5 minutes. Cures very hard and does not appear to shrink. It adheres very well to existing concrete. Mix a small amount at a time and wear gloves. This is NOT portland cement so it will give chemical burns.
Date published: 2016-11-03
Rated 5 out of 5 by from The best I tried ! easy to handle... The best I tried ! easy to handle and the quick setting was exactly what was needed !
Date published: 2017-03-07
Rated 5 out of 5 by from works great every time. works great every time.
Date published: 2016-12-27
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