Knowing exactly where moisture is entering the building can assist engineers in determining any appropriate remediation strategies. However, relying strictly upon a remediation “expert” who will make all of the determinations for your water intrusion repairs, actually gives you very little input into the process, and you are paying the bill and are the one who has to live with the results!
Being able to determine what the potential defect is gives you back the power to manage the repair process and makes remediation less painful.