Mold Growth in Carpets and What You Can Do About It

When you think of mold, you probably imagine dark, damp basements or forgotten corners of a bathroom. But one of the most overlooked places where mold can thrive is right under your feet—literally! Your carpet, especially in moisture-prone areas, can be a silent host for mold growth. And because it often develops out of sight, the problem can escalate before you even know it's there.

In this article, we’ll dive into how to identify mold growth in carpets, the common signs and symptoms, where it’s most likely to occur, how to prevent it, and what to do if you find yourself dealing with moldy carpet. Whether you’re a homeowner, property manager, or business owner, this is essential knowledge for protecting your indoor environment and your health.

Identifying Mold Growth in Carpets

Mold in carpet isn’t always obvious at first glance. Since carpet fibres and underlayment's can trap moisture, mold often grows underneath the surface where it’s hidden from view. That’s why early detection is key.

Here are a few ways to identify mold growth in carpets:

• Visual Cues: Look for discolouration such as green, black, or white spots on the carpet or along the edges near baseboards. Mold growth can sometimes resemble stains or patches.

• Odour: A musty or earthy smell is one of the earliest and most reliable signs of mold, especially in enclosed spaces.

• Dampness: If your carpet feels persistently damp or has been exposed to water (from spills, leaks, or flooding), it's a prime candidate for mold growth.

• Non-Professional Carpet Cleaning: If cleaning is not done properly, or the carpet is left wet for too long without proper drying, mold will start to grow.  

• Physical Testing: In some cases, professionals may use moisture meters or air sampling to detect mold spores hidden in or under carpeting.

Common Signs of Mold Growth

Whether you're directly exposed to mold spores through skin contact or inhalation, here are some common symptoms people may experience:

• Allergic reactions: sneezing, runny nose, coughing, and red, itchy eyes

• Respiratory issues, especially in people with asthma or compromised immune systems

• Skin irritation or rashes

• Worsening symptoms for individuals with mold sensitivities

If symptoms seem to worsen while indoors and improve when away from the home or affected room, mold could be the culprit especially if carpeting is present.

Where Mold in Carpets Is Most Common

Certain environments are more conducive to mold growth, particularly when there’s poor ventilation and high humidity. Here are some common areas where mold in carpets tends to thrive:

• Basements: Naturally damp and often poorly ventilated, basements are hotspots for mold growth in both carpets and padding.

• Bathrooms and Kitchens: If carpets or rugs are placed in or near these areas, they can absorb water from steam, leaks, or spills.

• Entryways: Moisture from rain, snow, or muddy shoes can get trapped in entryway rugs and mats.

• Flooded Areas: Any area that has experienced flooding or major water damage is at high risk for mold, especially if the carpet was not dried promptly and properly.

Preventing Mold Growth in Carpets

The good news? Mold in carpets can often be prevented with a bit of vigilance and proactive maintenance. Here are some preventative tips to keep your carpets clean and mold-free:

1. Control Indoor Humidity: Keep humidity levels below 60%, ideally around 30-50%. Use dehumidifiers and air conditioning during humid months.

2. Clean Spills Immediately: Promptly blot and dry any spills or leaks. Even small water spills can soak into the padding and create ideal conditions for mold.

3. Use Mold-Resistant Carpet Padding: If you're installing a new carpet, consider using moisture-resistant padding underneath.

4. Avoid Wall-to-Wall Carpeting in High-Moisture Areas: Stick to washable rugs in bathrooms, kitchens, or basements, and avoid wall-to-wall carpeting in these zones.

5. Regular Deep Cleaning: Professional carpet cleaning can help remove embedded dirt and moisture that vacuuming alone may miss.

6. Improve Ventilation: Ensure proper airflow throughout your home, especially in rooms with carpeting. Use fans and open windows when possible.

What to Do When You Find Mold in Carpet

If you discover mold in your carpet, don’t ignore it—it will only get worse over time. Here’s what to do next:

1. Stop the Source of Moisture: Before addressing the mold, fix any leaks or water issues that caused it. Otherwise, the mold will just come back.

2. Assess the Damage: If the affected area is small and the carpet is still salvageable, you may be able to clean it. Use a solution of white vinegar and water, or a commercial anti-fungal cleaner. Be sure to wear gloves and a mask.

3. Dry Thoroughly: After cleaning, thoroughly dry the area using fans, dehumidifiers, or even a wet/dry vacuum.

4. Remove and Replace if Necessary: If the mold has spread extensively, penetrated the carpet padding, or if it’s a recurring issue, the best course of action is to remove and replace the carpet. In many cases, mold remediation professionals can assess and handle this for you safely and efficiently.

5. Call a Professional: Mold removal can be hazardous and tricky. If you’re unsure about the extent of the mold or how to clean it properly, it’s best to contact a certified mold remediation company to evaluate and resolve the problem.

Carpet may add comfort and style to a space, but it can also harbour hidden dangers when moisture and mold come into play. Knowing the signs of mold, where it’s most likely to grow, and how to prevent it can save you time, money, and potential health issues in the long run.

If you suspect mold in your carpet, don’t wait. The sooner you act, the better your chances of minimizing damage and protecting your indoor environment. And when in doubt, bring in the professionals at got mold?™, we have the tools and expertise to make sure mold doesn’t have the last word.