Rated 4.5 out of 5 by 8
Rated 5.0 out of 5.0 by Whitney most dependable, efficient, and easy way to stop leaks
20 LB. GRAY LEAK STOPPER is the most dependable, efficient, and easy way to stop any existing and/or redundant leak. Follow the instructions - along with the ratios though - and be prepared to mix and fill rather quickly because this cement does bond/dry rather fast and will turn into clumps before you know it - making it hard to fill and hard to seal completely
April 9, 2016
Rated 5.0 out of 5.0 by Bman Excellent Product
I recently completed a project which required me to put a hole through my concrete and stone basement wall, below grade. I had originally used Thoroseal to waterproof the hole. After the first hard, heavy rain I had water inside my basement. It wasn't coming in from just one spot, but many around the intrusion. I tried Leak Stopper next. I chiseled out as much of the Thoroseal as I could, and mixed up the Leak Stopper. I applied it to the wall per the directions and let it dry. The patch looks great, and after the next several heavy rains, continues to be water tight!
July 2, 2016
Rated 5.0 out of 5.0 by PalmTrees4vr Works Great!!
Had wet floors inside the house. Turns out there was a crack on the outside, causing slow interior penetration of water. Used on the outside to repair the crack. No more water!!
July 21, 2016
Rated 5.0 out of 5.0 by Manny No more leaks
This stuff is geaven, we had a major leak in our pool. Costing us money, we applied this Kwak stopper and the best thing is that we didn't have to empty the pool to apply it, you can literally use it in water. Stopped the leak within mintues. Quick dry, thanks homedepot.
May 17, 2016
Rated 5.0 out of 5.0 by dave owner Pool Clinic
Used product to stop the surface water under swimming pool from flowing back into the pool. Plugging the relief holes with leak stopper allowed me to refinish the pool.
March 22, 2016
Rated 1.0 out of 5.0 by SkiVt Poor mix Stop leak
To many small rocks in mix not sure I will use again ...,
March 29, 2016
Rated 5.0 out of 5.0 by Richierich03 Fantastic product!
Had a damp area in the garage but until the recent 500 year storms I was unable to find the location of the leak due to drywall installed on the walls. During the storm, with torrential rains, I was able to locate the leak. After removing the drywall I discovered a mess where they broke into the concrete block to put in a waste line for the garage sink.
They recommend you clean out a 3/4" x 3/4" hole to install the cement in. I has to chip out some block to get the required hole to install the cement in. Take your time and make sure you clean out the crack very well first. I used a chisel, wire brush and shop vac to clean out the hole. Make sure you soak the area completely before installing the cement.
I mixed the cement to the 3/1 ratio of cement to water. I worked it into the hole fast with a small 2" margin trowel. It sets up very, very, very fast. Get everything ready before you mix and when you mix be ready to patch immediately!
December 20, 2015
Rated 5.0 out of 5.0 by RonniesReviews Hydraulic leak stop--Awesome product
During the tropical storm that dumped 32" of rain, water was seeping up into my patio through a 1' x 4' rectangle the previous owner had left open. I had bought the product for a small crack, and had most remaining. Three inches of water was still in the hole, so I dumped in the mix and stirred in place. Within five minutes the water was stopped and has never even seeped. Cures so fast, it's a little difficult to do a large area, but even a thin amount will seal a crack. Buy it!!
December 17, 2009