Aureobasidium

Found where moisture content exceeds 20% or condensation is active

Address condensation and improve ventilation before cleaning

Is Aureobasidium (Aureobasidium pullulans) dangerous?

Aureobasidium is classified as a low-risk, allergenic mold with moderate allergenic potential. Primary health concerns include allergic reactions, skin sensitization, respiratory irritation. Low to moderate; rare opportunistic pathogen reported in severely immunocompromised individuals A professional assessment determines the extent and the right response for your property.

Where does Aureobasidium grow in Gulf Coast homes?

Aureobasidium commonly appears in window frames and glazing seals, bathroom caulking and sealants, painted surfaces with moisture exposure, shower curtains and enclosures. It thrives at 80-100% relative humidity with a water activity of 0.90+ aw, conditions that are common across humid Louisiana and Mississippi Gulf Coast properties.

How do you identify Aureobasidium?

Initially cream to pink, smooth and slimy; develops dark pigmentation (melanin) as colony ages, becoming black and leathery Colonies are typically pink, brown, black with a slimy, yeast-like initially; darkens and becomes leathery with age texture. Generally low odor; slight musty smell when extensive Confirmation requires professional sampling and laboratory analysis rather than visual identification alone.

What does remediation of Aureobasidium involve?

Aureobasidium typically calls for standard containment. Surface mold on porous painted surfaces may be cleaned; heavily affected materials should be replaced Address condensation and improve ventilation before cleaning InspectaMold documents the conditions and provides an independent protocol so the underlying moisture source is corrected, not just the visible growth.