The Institute for Inspection, Cleaning and Restoration Certification (IICRC) was formed in 1972 to serve as an independent certification body to set and promote high standards and ethics and to advance communication and technical proficiency within the inspection, cleaning and restoration service industries.

Mold becomes a problem inside a home or business when there's excessive humidity or moisture for an extended period of time. The problem can originate from sudden water releases, like a burst pipe or large spill that goes untreated, or from a chronic condition, such as a leaking roof or plumbing. Even high humidity or warm, moist air condensing on cool surfaces can trigger mold problems. It's always best to have the mold evaluated and removed by a certified professional.

Mold can grow almost anywhere in a home or business if conditions permit. If there is visible growth on painted wall surfaces, property owners should be concerned about what may be growing on the wall's opposite side. The environment inside the walls of a house often differs drastically from the outside and could create a perfect haven for mold. If the wall remains wet for a prolonged period, it's almost guaranteed that the mold growth on the back side will be worse than on the front. At that point, containing the work space and removing moldy materials, followed by cleaning of salvageable framing, are the best options.

The Environmental Protection Agency (EPA) provides guidelines on microbial contamination and remediation. Molds produce tiny spores to reproduce, just as some plants produce seeds. These mold spores can be found in both indoor and outdoor air, and settled on indoor and outdoor surfaces. When mold spores land on a damp spot, they may begin growing and digesting whatever they are growing on in order to survive. Since molds gradually destroy the things they grow on, you can prevent damage to building materials and furnishings and save money by eliminating mold growth.

Moisture control is the key to mold control. Molds need both food and water to survive; since molds can digest most things, water is the factor that limits mold growth. Molds will often grow in damp or wet areas indoors. Common sites for indoor mold growth include bathroom tile, basement walls, areas around windows where moisture condenses, and near leaky water fountains or sinks. Common sources or causes of water or moisture problems include roof leaks, deferred maintenance, condensation associated with high humidity or cold spots in the building, localized flooding due to plumbing failures or heavy rains, slow leaks in plumbing fixtures, and malfunction or poor design of humidification systems. Uncontrolled humidity can also be a source of moisture leading to mold growth, particularly in hot, humid climates.