Excessive irrigation, which means more exposure to water, can lead to problems in your stem wall, so making the concrete change its PH. If the concrete changed its PH, it will become more acidic and will cause the rebar to get oxidized. By the time the Stem wall failure signs become visible, it means it is a little late, and the is a high probability of having to replace the whole rebar and the concrete as well. Thanks to NeveRust™, this family will not face any more stem wall problems