How Do I Read a Mold Air Quality Report?

A standard report typically includes sections for sample locations, spore types identified, and concentration levels. You will see columns listing raw spore counts per cubic meter of air for each location tested. The outdoor control sample provides a baseline for normal environmental mold levels. Comparing indoor samples to this baseline shows if your indoor air has a problem. The report's structure is designed to make this comparison clear and actionable for you.

• Sample location descriptions (e.g., living room, garage)
• Spore count for each mold type per cubic meter
• Total spore count for the sample
• A calculated ratio of indoor to outdoor spore levels
• Visual observations from the inspector
• The lab's analysis date and sample ID

Reports list mold by genus, such as Cladosporium, Penicillium, or Aspergillus. Common outdoor molds like Cladosporium may not be a concern unless levels are very high indoors. The report may flag certain genera, like Stachybotrys (often called black mold), as toxigenic. The identification of these types requires careful evaluation, as they indicate past or present moisture issues that need addressing. Some reports also categorize molds by their potential for causing allergic reactions, providing a more complete risk picture for your home.

If the report indicates elevated levels, your first step is to find and fix the moisture source, such as a leak. For minor, non-toxigenic mold, thorough cleaning with appropriate products may suffice. For significant findings or toxigenic molds, consulting a qualified mold professional is advised. They can perform a detailed inspection and plan safe, effective remediation. Always see a doctor if you or family members feel unwell. Keep the report for your records, as it documents the conditions before any cleanup work begins. This documentation can be important for future reference or insurance purposes. Policies vary, and your insurer decides what is covered.