Our concrete crack waterproof repair sealant contains silicone acrylic emulsion and defoamer. It can seal efficiently, prevent water penetration and protect the structure. Its application is simple: clean surfaces and crevices, make sure there are no dust particles, wear gloves and install a pointed lid on the product, squeeze the product directly into the desired gap, scrape the product flat with a scraper, and wait for it to dry. And high-quality materials to ensure long-term waterproof effect.