Taos Mold: Altitude Lies Brewing Lung Yeast?

Photograph of Franklin Everett ShawBy Franklin Everett Shaw
May 2, 2026

The scent of piñon smoke hangs heavy in the Taos air, a comforting aroma that defines the high desert landscape. But sometimes, another, less welcome odor can permeate these historic adobe homes: the musty smell of mold. And in Taos, it’s not always the usual suspects. Often, it’s Aureobasidium pullulans, a mold that thrives in high altitudes and is frequently mistaken for harmless yeast. This “Taos Mold,” as some locals call it, presents unique challenges for identification and remediation, especially in the porous walls of traditional adobe structures.

This isn’t your average mold scare. Aureobasidium pullulans is a ubiquitous fungus, found on leaves and in soil worldwide. However, its prevalence in Taos, coupled with the specific construction of adobe homes, creates a perfect storm for indoor growth. The altitude, fluctuating temperatures, and the adobe’s inherent moisture retention provide an ideal environment.

So, how do you know if you’re dealing with “Taos Mold,” and what can you do about it? Let’s dive in.

First, let’s talk about identification. Unlike some molds that present as fuzzy patches of green or black, Aureobasidium pullulans often appears as a slimy, pinkish, or dark brown stain. It can even look like dirt or soot, making it easy to overlook. This is especially true in the textured surfaces of adobe walls.

DIY testing is a good starting point. You can purchase readily available mold test kits at hardware stores like Lowe’s in nearby Santa Fe or online retailers. These kits typically involve swabbing a suspected area and sending the sample to a lab for analysis. However, be aware of their limitations. Many kits only test for a limited number of mold species and may not accurately quantify the extent of the problem.

A more reliable, albeit slightly more involved, DIY method involves creating a “settle plate.” Leave a petri dish containing agar (available online or at some health food stores in Taos) exposed to the air in the suspected area for a few hours. Seal the dish and observe it over several days. If mold colonies grow, you can compare them to online resources or consult with a local expert to identify the species.

Now, let’s address the symptoms of exposure. While general mold exposure can cause respiratory issues, allergies, and skin irritation, “Taos Mold” exposure seems to present some unique challenges. The high altitude can exacerbate respiratory problems, making it difficult to distinguish mold-related symptoms from altitude sickness or seasonal allergies.

Common symptoms reported by Taos residents include:

  • Persistent cough, even without a cold.
  • Sinus congestion and headaches.
  • Fatigue and brain fog.
  • Skin rashes or itching.
  • Exacerbation of asthma symptoms.

If you suspect mold exposure, consult with a healthcare professional familiar with the local environment. Dr. Martinez at Holy Cross Medical Center in Taos is often recommended by locals for environmental illness concerns.

Okay, you’ve identified Aureobasidium pullulans in your adobe home. What now? Remediation is crucial, but it requires a different approach than dealing with mold in conventional construction.

Adobe is porous and absorbs moisture readily. Simply wiping away the visible mold is not enough. The mold will likely return.

Here’s a step-by-step guide to DIY remediation, but remember, for extensive infestations, professional help is often necessary:

  1. Ventilation is Key: Open windows and doors to increase airflow. Use fans to circulate air and dry out the affected area. This is especially important in the dry Taos climate.

  2. Surface Cleaning: Mix a solution of water and a mild detergent (like dish soap). Gently scrub the affected area with a soft brush or sponge. Avoid harsh chemicals like bleach, as they can damage the adobe and may not effectively kill the mold.

  3. Disinfection: After cleaning, apply a solution of hydrogen peroxide (3%) or a botanical fungicide specifically designed for mold remediation. Follow the manufacturer’s instructions carefully.

  4. Moisture Control: This is the most critical step. Identify and address the source of moisture. This could be a leaky roof, a plumbing issue, or condensation. Ensure proper drainage around your home’s foundation.

  5. Adobe Repair: If the mold has damaged the adobe, you may need to repair or replace the affected area. Consult with a local adobe contractor for advice on proper materials and techniques.

Now, let’s talk about professional mold remediation services in Taos. Several companies serve the area, including:

  • Taos Environmental Services: Known for their experience with adobe structures and their use of environmentally friendly remediation techniques.

  • Black Diamond Restoration: Offers comprehensive mold testing and remediation services, including air quality testing.

  • ServiceMaster Restore of Northern New Mexico: A national franchise with local expertise, providing mold removal and water damage restoration services.

When choosing a professional, ask about their experience with Aureobasidium pullulans and adobe construction. Get multiple quotes and compare their proposed remediation plans. Ensure they are licensed and insured.

The cost of professional mold remediation can vary depending on the extent of the infestation and the size of the affected area. Expect to pay anywhere from $500 to $5,000 or more.

Preventative measures are crucial to avoid future mold problems. Here are some tips specific to adobe homes in Taos:

  • Ventilation: Ensure adequate ventilation throughout your home. Open windows regularly, especially during and after showering or cooking. Consider installing exhaust fans in bathrooms and kitchens.

  • Dehumidifiers: Use dehumidifiers to reduce moisture levels, especially during the monsoon season.

  • Roof Maintenance: Regularly inspect your roof for leaks and repair them promptly.

  • Landscaping: Ensure proper drainage around your home’s foundation. Keep vegetation trimmed back to allow for airflow.

  • Adobe Sealing: Consider sealing your adobe walls with a breathable sealant to prevent moisture absorption. Consult with a local expert for recommendations on appropriate sealants.

One common mistake Taos residents make is neglecting to address the underlying moisture problem. They may clean the visible mold, but if the source of moisture is not addressed, the mold will inevitably return.

Another pitfall is using harsh chemicals like bleach on adobe. Bleach can damage the adobe and may not effectively kill the mold. It can also create a breeding ground for other types of mold.

Finally, many residents underestimate the extent of the mold problem. What appears to be a small stain on the surface may indicate a much larger infestation within the adobe walls.

Dealing with “Taos Mold” can be challenging, but by understanding the unique characteristics of Aureobasidium pullulans and the specific needs of adobe homes, you can effectively identify, remediate, and prevent mold growth. Remember, early detection and proactive measures are key to maintaining a healthy and comfortable living environment in the beautiful, but sometimes challenging, high desert of Taos, New Mexico.

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