25 lbs. Water Stop Hydraulic Cement Crack Filler in Gray

Great product. Used on my ADU door where water sits. Also added to adjacent wall. Thick putty consistency made it easy to work with. Filled in where wood deteriorated. Hard as a rock now. Can’t wait for the rain to come to see the full results.

I have a wet spot on the basement floor. Underground water goes thru the floor concret appearing as a wet spot on the ground. I have to find a cement patch to water proof the wet spot concret. I know roof cement is the best but there is no grey color for concret. This Rapidset looks good on the discription. So I gave it a try. I cleaned the wet spot and used a concret drill bit to cut the surface so that it has a better cover of the wet spot. No luck, water still goes thru the Rapidset cement.

This product worked great to seal up a crack in our masonry foundation. Part of the patch was under about 4-6 inches of water and it still set up fine. I would recommend this product to anyone needing to patch a foundation in wet conditions.

After heavy rains (Hurricane Michael) and more rain, water was freely flowing at basement floor seam (where floor joins at wall). Took a trip to Home Depot to purchase another product. HD associate recommended this product since leak was active. Product was easy to mix (1 part water, 3 part mix). FOLLOW THE INSTRUCTIONS!!! This is rapid set cement and it sets within about 2 minutes so make in SMALL BATCHES. You must work quickly! It worked! No more leak. Clean up is easy with water. I highly recommend this product! Thank you HD for your knowledgeable staff that made a great recommendation.

The product worked perfectly. I would recommend this to anyone who has basement walls that get or stay wet, or ... even on floors. It's really a great product. I went around my entire basement with this, patching all of the holes and cracks I could see. Then I painted the walls with DRYLOK Extreme (from Home Depot). My leaking has finally stoipped.

I cannot say enough about this product. It does what it claims to do. It stops water when regular cement won't. I used this product on a 158 year old farmhouse basement that continually leaked. Both the walls and floor leaked but I was determined to put an end to it. Here's how I did it: I started with one box of Water Stop - just to get a feel for it. I saw that it sets up VERY quickly. I then determined how much I would need to patch all of the holes and cracks. I calculated about 25 boxes and I was right on. I vacuum swept the walls with a shop vac that I purchased last year at Home Depot. Then, I patched everywhere that I possibly could. The next day, I applied DRYLOK Extreme (also available at Home Depot), over all vertical surfaces. The next day, I applied a second coat of DRYLOK Extreme. Both Water Stop and DRYLOK are very good but when used together, they are like magic. Neither one are cheap, but in the end, they are WELL worth the price. This basement is as dry as a bone now and looks great.

Will not hold back a lot of water. Will eventually crack and leak. Even after 5 thick coats on a basement wall.

Great for pool repairs and anything underwater dries underwater