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QUIKRETE Water-Stop 20 -lb Concrete Hydraulic cement

Name: QUIKRETE Water-Stop 20 -lb Concrete Hydraulic cement
Brand: QUIKRETE
SKU: 1000663
Rating: 4.6 (485 reviews)

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4.6

485

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Unit of Measure Quantity: 20

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QUIKRETE Hydrualic Water-Stop Cement will block running water when application is made to masonry or concrete surfaces.

Block running water or leaks in cracked masonry or concrete surfaces
Use for sealing around concrete pipes and for plugging leaks in: foundation and retaining walls, chimneys, swimming pools, fountains and cisterns
Final set time less than 5 minutes
Will setup under water

General
Color/Finish Family	Gray	Application Method	Trowel
Series Name	Water-Stop	Drive on Time (Hours)	0
Type	Hydraulic cement	Curing Time (Hours)	24
Base Material	Cement	VOC Level	0
Package Quantity	1	Paintable	Yes
Unit of Measure Quantity	20	Number of Coats Recommended	1
Unit of Measure	Pound(s)	Container Type	Bucket

Features
Fast Setting	No	Lowe's Exclusive	No

Certifications
CA Residents: Prop 65 Warning(s)	Prop 65 WARNING(S) -

Warranty
Warranty	1-year limited

Compatibility
For Use on Concrete	Yes	For Use on Mortar	No
For Use on Stucco	No

Miscellaneous
UNSPSC	30111500

Check out the Best Selling Concrete & Mortar Repair on Lowes.com

Review

4.6 out of 5

485 Reviews

93% Recommend this product

Ratings may include incentivized customer reviews.

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+ 21

What Customers Are Saying

Customers overwhelmingly praise this hydraulic cement for its exceptional ability to stop water leaks in basements and foundation cracks, with nearly all reporting high satisfaction. Most highlight its fast-setting nature and reliability for sealing water infiltration under active pressure, noting it works where other products failed. Reviewers emphasize the need to mix small batches and work quickly due to rapid hardening, which they frame as a feature rather than a drawback. A few report challenges with preparation or rare exterior failures, but these are exceptions. Overall, customers consider it an effective, go-to solution for urgent water leak repairs.

Customer review summary generated by AI, including incentivized reviews.

485 Customer Reviews

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Quick and Easy

Would Recommend

Great product for quick and easy repair of concrete. Easy to mix and cures quickly.

NikoDOctober 9, 2026
From 50-LB WATER-STOP CEMENT Verified Purchaser

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good product

This product was great to patch cracks in our basement

Dug67October 7, 2026
From 10-LB WATER-STOP CEMENT Verified Purchaser

Was this Review Helpful ?

Used this product to stop leaks in my garage foundation. Worked great. Also used on some cracks in the floor. It matched the current floor color and looks good.

JerryOctober 6, 2026
From 2-LB ZIP N MIX WATER-STOP CEMENT Verified Purchaser

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Easy Use!

Would Recommend

This product was easy to handle but very limited on time of mixing to use. Had to work fast. But appears to have done the job that it is designed to do.

Drylock BrushSeptember 30, 2026
Verified Purchaser

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Would Recommend

great product

handy ladySeptember 24, 2026
From 50-LB WATER-STOP CEMENT Verified Purchaser

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Loved it!

Would Recommend

Loved how quickly it works and water resistance is a great addition 👍

MetinSeptember 23, 2026
From 10-LB WATER-STOP CEMENT Verified Purchaser

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I bought it a few weeks ago. I needed to quickly set a riser on top of my septic system worked exactly as advertised.

KnobSeptember 23, 2026
From 10-LB WATER-STOP CEMENT Verified Purchaser

Was this Review Helpful ?

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COMPARE PRODUCTS

		Name	Current Item QUIKRETEWater-Stop 20 -lb Concrete Hydraulic cement
		Ratings	485
		Type	Hydraulic cement
		Base Material	Cement
		Fast Setting
DRYLOKFast Plug Fast Setting 10 -lb Mortar Concrete Hydraulic cement	QUIKRETE20-lb Polymer Modified Structural Concrete Repair	QUIKRETERe-Cap 40 -lb Concrete Resurfacer	SakreteLeak Stopper Fast Setting 20.0 -lb Mortar Concrete Hydraulic cement	High Performance Cement by QuikreteFastSet Self-Leveling Floor 50 -lb Concrete Resurfacer	QUIKRETE20-LB TROWEL GRADE RE-CAP CONCRETE RESURFACER	SikaReady-Mix Textured Fast Setting 1 -Gallon Stucco Mortar Concrete Patch	High Performance Cement by Quikrete55-lb HPC FastSet All-Crete	SikaFast Setting 1 -Gallon Mortar Concrete Patch
104	119	177	167	287	177	5	146	182
Hydraulic cement	Repair accessory	Resurfacer	Hydraulic cement	Resurfacer	Resurfacer	Patch	Anchoring cement	Patch
Cement	Cement	Cement	Cement	Cement	Cement	Acrylic	Cement	Acrylic