The indoor environment is an inherently complex system. There’s the building itself, of course. The design, materials, systems, and so much more come together to create a home, office, retail space, hospital, school, and so on.

For decades, scientists have been focused on outdoor air quality. Today, there are regulations in place across the U.S., and around the world, to help keep the atmosphere clean, and reduce smog and other pollution.

With the legalizing of marijuana for recreational use in many states and more coming on board, as restorers we can expect to see more cleaning jobs that involve this type of residue, especially in rental situations.

According to the American Psychiatric Association, hoarding disorders occur in an estimated 2 to 6 percent of the population and often lead to substantial distress and problems functioning.

What is thermal tracking? What causes it? Is it a sudden occurrence? Is it a mechanical failure? Is it a maintenance issue? Can burning candles cause it? Will your insurance cover damage caused by thermal tracking? Annissa discusses all this and more in this weeks Ask Annissa!

The first three parts of this series covered an overview of chemical sensitivities, the critical importance of source removal and detailed cleaning, and products and processes that can be used for neutralization of chemical or biological residues that remain following cleaning.