Water enters the wall from cracks or brick cracks in the outer wall. Generally, walls are made of bricks, which absorb more water and store more water, and then penetrate into the weak parts of the inner wall. Dealing with it from the outside is the fundamental solution, but it is generally impossible to repair it all from the outside. So it can only be repaired from the inside. Repairing from the inside depends on the cohesiveness and waterproofness of the back surface material. For more information and better suggestions, we will provide free technical consultation on repairing waterproof and leakage of concrete, starting from today.