Before he became a licensed mold inspector/assessor in 2006, Brent Horton, owner of Mold and Air Inspection in Boiling Springs, S.C., sold indoor air purification equipment. Often, when calling on customers, he kept running into questions from many of them about mold.

If left unchecked, water intrusion can damage a home or building. It can cause rotted wood, peeling paint, rusted metals, water stains, buckling floors, mold growth, and even pest infestations.

A look at what tools you may need for any job or property inspection.