A crack is a structural problem, which cuts through the finish and enters the gunite projectile. The right solution is a few things. The deepest cracks can be seen in the corners or where the wall of a spa adjoins the pool wall, or they can form behind the tile line, in the joining beam of the pool. In the case of small cracks, the easiest thing is to jump into the pool with a mask and a flat screwdriver.
If cracks in concrete pools are not repaired in time, aesthetics and safety will be further compromised.
