The crack in the wall of this Broad Brook, CT basement was not large enough to cause any structural damage, but it was allowing water to enter the basement. We recommend sealing leaky cracks with our FlexiSpan Wall System. Our unique system starts with filling the crack with our high-viscosity polyurethane polymer. Unlike other sealants, ours is designed to move with the seasonal shifts of the walls, so that the crack will not reopen and leak more water into the basement.