When you suspect mold, step #1 is a professional mold assessment: surveying moisture levels of walls, ceilings and floors, locating visible mold growth, and testing the air for the quantity and variety of mold spores. Determining the variety of mold is important because some types of mold are indicators of water damage and are potential health hazards. A Bye Bye Mold â„¢ professional mold assessment is your first step towards a healthy indoor environment.