Does Mold Grow At High Altitude In Colorado?

If you own or live in a property in one of our beautiful mountain towns like Leadville, Aspen, Winter Park, or Snowmass, you've probably heard the rumor that mold doesn't grow at altitudes above 5500 feet. But is that really true?

Mold is a type of fungus that grows in damp, warm environments. It reproduces by releasing tiny spores into the air, which can cause health problems if inhaled. It's a common issue in homes across the country, but what about homes in our high-altitude Colorado towns?

Mold Growth At High Altitude Colorado Properties

The truth is, mold can and does grow at high altitudes at least 2500 to 8200 ft above sea level. While it's true that the colder, drier climate found at higher elevations can make it harder for mold to thrive, it's not impossible. If there's moisture, warmth, and a food source (like wood, drywall, or even dust), mold can grow - even in a mountain home.

At altitudes as high as 12,000 feet, the environmental conditions can be quite harsh and less conducive to mold growth. The air is thinner, temperatures are generally colder, and the overall climate is drier. These factors can make it more difficult for mold to grow. However, it's important to note that "more difficult" does not mean "impossible."

Mold growth is primarily driven by three factors: moisture, warmth, and a food source. Even at high altitudes, if these conditions are present, mold can still grow. For instance, if a home at 12,000 feet has a leak indoor that causes a buildup of moisture, or if there's a warm, damp area in the house, such as a bathroom or kitchen, mold could potentially grow in these areas.

So, what does this mean for you, the property owner or resident? It means that even if your home is nestled in the Rocky Mountains, you still need to be vigilant about preventing mold growth. Here are a few tips:

Control Moisture: This is the most important step in preventing mold growth. Make sure your home is well-ventilated, fix any leaks promptly, and use a dehumidifier if necessary.

Keep it Clean: Regular cleaning can help prevent mold spores from settling and growing. Pay special attention to areas that are often damp, like bathrooms and kitchens.

Stay Warm: Mold doesn't like cold temperatures, so keeping your home warm can help prevent growth. This is especially important in winter, when homes in places like Aspen and Snowmass can get quite chilly!

Inspect Regularly: Regular inspections can help catch any potential mold problems early. Look for signs of moisture or visible mold growth, especially in hidden areas like basements and attics.

Common Mold Found At High Altitude Homes

Mountain homes, with their rustic charm and breathtaking views, are a dream come true for many. However, if not properly maintained, these high-altitude havens can become a breeding ground for various types of mold.

mold type


This is a common type of mold that can grow indoors, especially in damp or water-damaged environments. Aspergillus can appear in many colors and can cause health problems, especially in people with weakened immune systems or lung diseases.


Unlike many types of mold, Cladosporium can grow in cool areas, making it a potential problem in mountain homes, especially during the colder months. It's often found on fabrics and wood surfaces and can cause a variety of health issues.


Known for its blue-green color, Penicillium is often found in homes with water damage. It spreads easily and can lead to health problems, especially respiratory issues.

Stachybotrys Chartarum

Also known as "black mold," Stachybotrys chartarum is less common but more dangerous. It grows in areas that are constantly damp and can release toxins that cause serious health issues.


This type of mold is commonly found in damp places, like showers or under leaky sinks. It's one of the most common molds and can cause allergic reactions and asthma attacks.

Call Professional Mold Remediation Service

if you suspect your Colorado properties in the mountains are dealing with mold issue. Please give us a call to get an mold inspection service done (303)-962-8786, and we will route the closest service near your property location in the mountains.

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