Mold Under Flooring: Testing & Health Risks

Signs that You Have Mold Under Your Floors

Mold is an unwelcome guest in any home or business, capable of causing significant health issues and structural damage. Detecting mold early is crucial to maintaining a safe and healthy environment. This blog post will discuss mold under flooring, if mold under flooring is dangerous, how to detect it and more.

Is Mold Under Flooring Dangerous?

Mold growth under flooring can be a hidden danger, leading to various health issues. When mold forms under flooring, it often goes unnoticed until health problems arise. Mold releases spores into the air, which when inhaled can lead to respiratory health problems, allergies, and more.

One of the most notorious types of mold is black mold, which can release mycotoxins that are harmful to humans. Exposure to black mold can lead to severe respiratory issues and neurological problems, as well as worsening of pre-existing health conditions.

Structural Risks

Mold growth isn’t just a health concern – it can also cause serious risks to the structural integrity of your home. When mold develops under flooring, it actively feeds on organic materials, such as wood, leading to significant damage over time. Mold thrives in moist environments, and prolonged exposure can cause subflooring to weaken or rot. Ultimately, this damage can lead to warping or buckling, as well as sagging and collapse.

Repairing damage from mold under flooring can be costly. Not only does rotted flooring need to be removed and replaced, but professional removal of mold will be necessary as well. Mold removal requires specialized equipment and expertise, which can be expensive.

What Causes Mold Under Flooring?

Mold is a type of fungi that thrives in damp, humid environments. It reproduces through tiny, lightweight spores that travel through the air. When these spores land on a moist surface, they begin to grow and spread. Mold can enter buildings through open windows, doors, vents, and even on clothing or pets.

Common Types of Mold Found Under Floors

  • Aspergillus: Often found in damp or water-damaged buildings, Aspergillus can cause allergic reactions and respiratory issues.
  • Penicillium: Known for its blue or green color, Penicillium can spread quickly and is often found in water-damaged areas.
  • Stachybotrys: Also known as black mold, Stachybotrys is particularly hazardous and thrives on materials with high cellulose content, like wood or drywall.

Common Causes of Mold Growth

Understanding the common causes of mold growth can help you spot mold issues before they escalate. The following are common causes of mold growth in homes:

  • Water leaks from plumbing or appliances
  • Flooding or standing water
  • High indoor humidity levels or poor ventilation
  • Spills or accidents that weren’t cleaned up properly

By addressing these common causes, homeowners can significantly reduce the risk of mold growth.

Flooring Types and Their Vulnerability to Mold

Different types of flooring vary in their susceptibility to mold growth.

Wood is a porous material that readily absorbs moisture, making it very vulnerable to mold growth. Prolonged exposure to water or humidity can allow mold to penetrate deep into the wood, causing discoloration and weakening structure.

Carpets can also be an ideal environment for mold due to the material’s ability to trap moisture. Mold can develop in carpets because of spills that aren’t clean thoroughly or high humidity.

Ceramic and porcelain tiles are non-porous, but mold can still grow in the grout lines between tiles. Grout is highly porous and absorbs moisture well, creating the perfect environment for mold growth. Cracked tiles or unsealed grout can also allow water to seep through, leading to mold problems.

While vinyl plank flooring is water-resistant, it is not immune to mold. Mold can develop underneath the planks due to water seeping through the seams, as well as around the edges where moisture accumulates from poor installation or lack of sealing.

Signs of Mold Under Floors

Visible Signs

One of the most apparent indicators of mold is visible damage to your flooring. Look for:

  • Discoloration: Patches of yellow, green, or black can signal mold growth.
  • Warping: Uneven or bulging floorboards suggest moisture buildup, a breeding ground for mold.
  • Peeling: If you notice your floor’s finish peeling or bubbling, it could be due to mold underneath.

Smell

Mold often emits a distinct, musty odor. If your home or business has developed an unexplained, persistent smell, it’s a strong sign that mold might be lurking beneath your floors.

Health Effects

Mold can significantly impact health, especially for those with allergies or respiratory conditions. Symptoms include:

  • Sneezing and coughing
  • Nasal congestion
  • Eye irritation
  • Skin rashes

If you or your family members are experiencing these symptoms, it could be due to mold exposure.

How to Check for Mold Under Flooring

Call a Professional

While some signs of mold are visible, others require professional expertise. Calling a professional to investigate for mold is not just a recommendation but a necessity for ensuring the safety and integrity of your home or business. Mold infestations can be pervasive and often hide in areas that are difficult to reach or see with the naked eye. Professionals are equipped with advanced tools and techniques that can accurately detect mold, even in hidden or obscure locations.

Attempting to handle mold issues on your own can not only be ineffective but also dangerous. Disturbing mold without proper containment can cause spores to become airborne, spreading the infestation and increasing health risks. Certified professionals follow stringent safety protocols to prevent cross-contamination and protect occupants from exposure. Additionally, they can provide insights into the underlying causes of mold, such as leaks or poor ventilation, and recommend long-term solutions to prevent recurrence.

Tools and Techniques for Mold Detection

It is crucial to detect mold early before it becomes a significant issue. Using the right tools and techniques will help you identify mold growth in hidden areas.

A flashlight is one of the simplest tools for finding mold. It can be used to inspect under floor beds or tiles and along baseboards, corners, and crevices.

Additionally, a moisture meter can be effective for identifying areas with excessive moisture. By placing the moisture meter on suspect areas, you can measure the moisture content of flooring or walls. Levels above 15% can signal a risk for mold growth.

Preventing and Treating Mold

Tips for Preventing Mold Growth Under Floors

  • Control Humidity: Use dehumidifiers to keep indoor humidity below 60%.
  • Fix Leaks: Address any plumbing leaks promptly and ensure proper drainage around your building.
  • Ventilation: Ensure good airflow by using exhaust fans in bathrooms and kitchens.
  • Waterproofing: Apply waterproof barriers in areas prone to moisture, such as basements and bathrooms.

Effective Treatments from Bactronix

At Bactronix, we offer advanced mold remediation solutions to ensure your home or business is mold-free. Our state-of-the-art technology effectively eliminates mold spores and prevents future growth. We use eco-friendly, EPA-approved products to clean and disinfect affected areas. After treatment, we provide recommendations and monitoring to keep your environment safe and healthy.

Common Questions about Mold Under Flooring

Can Mold Grow Under Vinyl Plank Flooring?

As previously mentioned, vinyl plank flooring is not immune to mold growth. Vinyl plank flooring is designed to repel water on its surface, but moisture can still find its way underneath through seams or gaps. Also, if subflooring is damp due to humidity issues or leaks, the moisture can remain trapped underneath the planks.

How Much Does Mold Remediation Cost?

Mold remediation costs can vary depending on the extent of the infestation, size of the affected area, and the type of mold. On average, homeowners can expect to pay between $500 and $6,000 for mold remediation services. Severe, large-scale cases can cost upwards of $10,000 or more.

While DIY solutions may seem cost-effective, they often fail to fully eliminate the problem. Professional mold remediation services provide comprehensive removal, preventative measures, and health protection. Investing in professional help ensures peace of mind and long-term protection for your home and health.

Can Mold Grow Under Laminate Flooring?

Laminate flooring is durable and cost-effective, but it does have vulnerabilities that leave it susceptible to mold growth underneath the flooring. Seams between the planks are not watertight, so moisture can reach the subfloor from spills or leaks that seep through gaps. Additionally, the core of laminate flooring is made of fiberboard, which is highly absorbent. If water penetrates the surface or edges, the fiberboard can swell and retain moisture. Once water gets underneath the laminate, it can become an ideal environment for mold growth.

How fast does mold grow under flooring?

The timeline from water exposure to potential health risk can be rapid, making quick actions steps vital.

Within 24 to 48 hours, mold spores begin to germinate and grow when exposed to moisture. In 3 to 12 days, visible signs of mold may begin to appear, such as discoloration or a musty odor. During this time, the mold begins to spread across the subflooring. At 2 to 3 weeks, mold growth becomes extensive and may penetrate deeply in the flooring and subflooring, making it harder to remediate.

Even in the early stages, mold growth can pose health risks. As time goes on, prolonged exposure to mold under flooring may intensify health issues.

Don’t Wait to Take Care of Mold Under Flooring

Early detection of mold under your floors is essential for maintaining a healthy living and working environment. By understanding the signs and taking proactive steps, you can protect your property and health. If you suspect mold under flooring, don’t wait—reach out to Bactronix for professional mold remediation services. Call us today and ensure your home or business is safe from the dangers of mold.