The process of removing, cleaning, and treating mold that has grown on building material, furniture, papers, concrete, etc. This process often involves using anti-fungal products such as Endurance BioBarrier and EBB Cleaner Prep along with other commercial-grade equipment.

Air Handling Unit

Equipment that includes a blower or fan, heating and/or cooling coils, and related equipment such as controls, condensate drain pans, and air filters. Does not include ductwork, registers or grilles, or boilers and chillers.

Air Sampling

Commonly referred to as "mold testing" or "air testing" and refers to the collection of air samples from a specific indoor area of a property. Air samples are analyzed for mold concentration and type, as well as any other particles in the air from the sampling location.


A substance, such as mold, that can cause an allergic reaction.


A substance or condition that inhibits the growth or existence of microorganisims. Often used to describe compounds in consumer products that have the ability to limit or halt the growth of microorganisms.

Biological Contaminants

1) Living organisms, such as viruses, bacteria, or mold (fungi), 2) the remains of living organisms, or 3) debris from or pieces of dead organisms. Biological contaminants can be small enough to be inhaled, and may cause many types of health effects including allergic reactions and respiratory disorders.


A substance or chemical that kills organisms such as mold.

Building Envelope

Elements of the building, including all external building materials, windows, and walls, that enclose the internal space.

Ceiling Plenum

The space between a suspended ceiling and the floor above that may have mechanical and electrical equipment in it and that is used as part of the air distribution system. The space is usually designed to be under negative pressure.


The transfer of mold or other contaminants from one location to another via air flow or physical contact. Provided that the new location has moisture and a source of food, a new colony of mold will begin growing.

Encapsulation Technology

Encapsulates are designed to cover mold and keep any remaining spores in place to prevent the release of spores into the air. They are sometimes used by remediators to cover up their poor work and are not a long-lasting mold solution.

Endurance BioBarrier does not use encapsulation technologies.


A class of spore-producing organisms that do not contain chlorophyll, and feed on organic matter. Molds, yeast, mushrooms, and toadstools are fungi. Mold and fungi are commonly used interchangeably.


A substance or chemical that kills fungi.


A compound that kills disease-causing microorganisms when used in accordance with the manufacturer's instructions.


High efficiency particulate air (filter).


Heating, ventilation, and air-conditioning system.


Great or excessive sensitivity.

Hypersensitivity Pneumonitis

A group of respiratory diseases that cause inflammation of the lung (specifically granulomatous cells). Most forms of hypersensitivity pneumonitis are caused by the inhalation of organic dusts, including molds.

Indoor Air Quality

The quality of air within a building as it relates to the health, safety, and comfort of the structure's occupants. Unclean air may contain mold, dust, pollens, or other particles.


A substance known to cause discomfort or an unhealthy physical response to individuals in close proximity to it.

Latent Damage

Damage not yet apparent but which may occur at a subsequent time.


Organisms so small that a microscope is required to see them. Microbes are also called microorganisms.


A unit of length equal to .0025 inches or .001 millimeters.


A thin whitish coating consisting of minute fungal hyphae, growing on plants or damp organic material such as paper or leather.


A group of organisms that belong to the kingdom of Fungi. In this course, the terms fungi and mold are used interchangeably.


A chemical made by mold that is a gas at room temperature and may have a moldy or musty odor.


A toxin produced by certain types mold. Mycotoxins are released as spores into the air, hurting air quality and in large amounts causing serious health risks.

Negative Pressure

A condition that exists when less air is supplied to a space than is exhausted from the space, so the air pressure within that space is less than that in surrounding areas. Under this condition, if an opening exists, air will flow from surrounding areas into the negatively pressurized space. Usually induced to limit the spread of dust or contaminants.


Not containing or caused by a toxin or poison. Not capable of causing any short- or long-term impairment or physical damage to living creatures.


Materials or compounds derived from vegetable or animal life, including petroleum derivatives.


A main air duct serving one or more distribution ducts; the space between a suspended ceiling and the structure above it.


Substances added to the environment which have a deleterious effect on living creatures.

Pressed Wood Products

A group of materials used in building and furniture construction that are made from wood veneers, particles, or fibers bonded together with an adhesive under heat and pressure.


To remedy or fix something. Mold remediation entails mold removal, cleaning, and treatment. Also see "Abatement."

Sick Building Syndrome

The popular name for chronic environmental conditions in building interiors which cause a variety of negative physical symptoms in the occupants.


The means by which molds reproduce. Spores are microscopic. They vary in shape and range from 2 to 100 microns in size. Spores travel in several ways: passively moved by a breeze or water drop, mechanically disturbed (by a person or animal passing by), or actively discharged by the mold (usually under moist conditions or high humidity).


Substrate refers to the surface of virtually any object in which biological organisms would grow on.

Top Coat

The final coat of paint usually applied over a primer or undercoat.

Threshold Limit Value

The airborne concentration of a toxin or irritant to which normal individuals can be exposed in the workplace without loss of structure or function, usually designated as an 8-hour time-weight average for a 40-hour week.

Topical Treatment

A surface treatment for when damage is minimal.


Any substance that causes short- or long-term impairment or physical damage to living creatures; a poison.


Producing toxic substances.


Volatile organic compounds are organic chemical compounds whose composition makes it possible for them to evaporate under normal indoor atmospheric conditions of temperature and pressure. This is the general definition of VOCs that is used in the scientific literature, and is consistent with the definition used for indoor air quality. Since the volatility of a compound is generally higher the lower its boiling point temperature, the volatility of organic compounds are sometimes defined and classified by their boiling points.