Mold Inspection Service in Centreville VA – For checking for mold visually in the area where mold growth is suspected, as well as in air ducts and vents. Mold inspection also involves a check of the outside of the structure, to help identify if or where moisture is entering. Mold Testing Service – Professional mold testing involves collecting at least two samples, a control sample from outside the structure and a sample from the area where mold growth is suspected.