Crystalline waterproofing is a method used to protect concrete structures from water infiltration. This technique involves applying a special coating that contains crystalline compounds. When these compounds come into contact with water, they react and form crystals that fill the tiny pores and cracks in the concrete, creating a waterproof barrier. This type of waterproofing is often used in basements, foundations, and water tanks to prevent leaks and damage. It is favored for its durability and effectiveness, as it not only blocks water but also allows the concrete to breathe, reducing the risk of mold and deterioration over time.