When water is actively leaking through a crack, you need hydraulic cement — not a paint. DryLok Fast Plug sets in just 3–5 minutes and stops active water infiltration on contact. The expanding formula fills cracks, holes, and joints in concrete, block, and masonry while water is still flowing. Mix to a putty consistency, push firmly into the crack, and hold until set. The fastest first response for active basement leaks before comprehensive waterproofing treatment.

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