Damage repair starts by naming the cause, because the cause decides where the repair goes. Springfield, MA roofs take wind, snow, ice and the occasional violent storm, and each one leaves a different mark. In June 2011 the National Weather Service tracked an EF3 tornado across the city that crossed the Connecticut River near the Memorial Avenue Bridge and removed roofs from some large commercial brick buildings in the city. We separate what a storm did from what age and drainage did, and repair to the cause.