Product Review
Actively leaking hairline concrete cracks as narrow as 0.02" in width can be repaired using this kit. Hydra Stop 300 reacts with moisture to expand inside the crack and stop the leak. Drill in place packers are used to inject the polyurethane resin into the crack. This is a single component material so no accelerator is needed to make it foam. The 3/8" injection packers have a premium rubber sleeve that reduces leaking as the polyurethane expands. This kit includes premium Hydra Stop 300 expanding foam. Use this kit on any concrete foundation crack that is too narrow for the low pressure method or if it is actively leaking water. High pressure concrete crack injection is done by drilling the packers into the crack and using a grease gun to inject the material at up to 1500 psi. Extremely tight cracks can be repaired with this method. Also cracks that are full of dirt and debris.
- STOPS ACTIVE WATER LEAKS FAST: This professional foundation crack repair injection kit is engineered for wet conditions, sealing actively leaking and previously repaired cracks as narrow as under 0.02" in width. Hydra Stop 300 works as a high-performance concrete crack filler and basement wall leak sealant, expanding inside the crack to block water at the source. Ideal for urgent crack repair and long-lasting basement waterproofing protection.
- SINGLE-COMPONENT EXPANDING FOAM, NO MIXING: Hydra Stop 300 hydrophobic polyurethane injection foam reacts with moisture, expands, and will not shrink after curing. It forms a dense, closed-cell barrier that functions as a durable foundation crack sealant and concrete crack sealer, helping stop seepage where traditional cement crack filler, surface patches, or rigid repair methods fail.
- HIGH-PRESSURE INJECTION REACHES TIGHT CRACKS: The included grease gun delivers over 1000 PSI of injection force, driving material deep into narrow voids and hidden fracture paths. This makes it an effective polyurethane injection kit for foundation alternative and a powerful concrete repair solution for structural foundation leak repair, sealing from inside the wall without exterior excavation.
- REPAIRS UP TO 10 FEET OF LEAKING CRACKS: One kit provides enough material to repair up to 10 linear feet of foundation wall crack. Ideal for basement foundation repair, vertical surfaces, and applications accessible from either the interior or exterior of the structure. A dependable concrete filler for cracks that homeowners and contractors can trust in addressing persistent foundation leaks.
- ALL WORK DONE FROM INSIDE, COMPLETE KIT INCLUDED: No exterior digging or heavy equipment required. The kit includes Hydra Stop 300 foam, injection packers, and a grease gun for a full foundation repair kit setup. Manufactured by Applied Technologies, trusted specialists in basement waterproofing and professional-grade concrete repair systems since 1998.
