Education & Resources

Mold: Beyond the Basics

Mold is a natural part of the environment. The problem is not the presence of mold — it is the presence of mold growing indoors on building materials, in conditions created by moisture intrusion or condensation. Understanding the difference between normal environmental mold and problematic indoor mold growth is the foundation of any meaningful assessment.

Key Points

• Mold requires moisture, a food source, and appropriate temperature to grow. Remove the moisture and you stop the growth.
• Not all mold species are equally problematic. The species, the quantity, and the location all matter.
• Visible mold is often the tip of the iceberg. The more significant growth is frequently hidden inside wall cavities, beneath flooring, or in the HVAC system.
• Mold produces mycotoxins — chemical compounds that can cause serious health effects in susceptible individuals, even at low concentrations.

Environmentally Acquired Illness (EAI)

Environmentally Acquired Illness is a broad term for conditions caused or exacerbated by exposure to indoor environmental contaminants. The most well-studied of these is Chronic Inflammatory Response Syndrome (CIRS), a multi-system illness triggered by biotoxin exposure in genetically susceptible individuals.

Key Points

• Approximately 25% of the population carries a genetic variant (HLA-DR) that impairs their ability to clear biotoxins from the body, making them significantly more susceptible to mold-related illness.
• CIRS can affect virtually every organ system, producing a wide range of symptoms that are often misdiagnosed as other conditions.
• The Shoemaker Protocol provides a validated framework for diagnosing and treating CIRS, and requires identification and remediation of the causative building as part of treatment.
• Recovery from CIRS requires both medical treatment and removal from the causative environment. Treatment alone, without addressing the building, is rarely sufficient.

Water Damage & Building Science

Buildings are complex systems. Water intrusion — whether from roof leaks, plumbing failures, foundation moisture, or condensation — sets in motion a cascade of biological and chemical processes that can take years to fully manifest. Understanding how buildings respond to moisture is essential to understanding why they make people sick.

Key Points

• Mold can begin growing on wet building materials within 24–48 hours under favorable conditions.
• Even after a water event is resolved, contaminated materials may continue to off-gas mycotoxins and other volatile compounds.
• Building materials that have been wet and dried may appear normal but harbor significant biological contamination.
• The building envelope — walls, roof, foundation — is the first line of defense against moisture intrusion. Failures in the envelope are the most common cause of serious indoor mold problems.