Concrete Crack Waterproof Repair Sealant, Multi-Substrate Universal Repair Material, Easily Fills Various Gaps In Floors And Walls. Strong Water-Blocking And Waterproofing, Convenient Application With Matching Scraper, Suitable For Indoor And Outdoor Scenarios, Forms A Stable Sealed Layer After Curing, Long-Lasting Protection Against Water Seepage, Safeguards Home Surfaces.