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Was Your Mold Remediation Done Correctly? Don’t Ignore the Warning Signs.

Written by Martine Davis on . Posted in Uncategorized. No Comments on Was Your Mold Remediation Done Correctly? Don’t Ignore the Warning Signs.

Five-Star Reviews Don’t Always Mean Five-Star Remediation

When choosing a mold remediation company, homeowners often rely on five-star reviews. But what are those reviews really telling you?

Most reviews reflect whether the workers were friendly, courteous, punctual, respectful, and cleaned up after themselves. Those are all good qualities, but they don’t necessarily tell you whether the mold was properly removed.

A company can have hundreds of five-star reviews and still perform inadequate mold remediation.

Most homeowners aren’t trained to recognize improper remediation practices. Fortunately, there are warning signs you can watch for, both during and after the work.

And here’s something important to remember: If something doesn’t look right, smell right, or make sense to you, question it. Don’t assume the contractor knows best simply because they’re the professional.

Warning Signs During Mold Remediation

1. Gaps or openings in plastic containment

The plastic barriers surrounding the work area are intended to prevent contaminated dust and mold spores from spreading throughout your home. Tears, loose tape, openings, or workers repeatedly lifting the plastic to enter and exit can compromise containment. The work area should also be maintained under appropriate negative air pressure.

2. Workers walking through your home in contaminated clothing

Workers should follow proper decontamination procedures when leaving the work area. Walking through your living spaces wearing contaminated protective clothing, gloves, or footwear can spread mold spores and dust into previously unaffected areas.

3. Dirty equipment brought into your home

Air scrubbers, HEPA vacuums, hoses, and other equipment should be clean and properly maintained. Equipment covered in dust or debris from previous jobs raises concerns about cross-contamination.

4. Musty or unpleasant odors escaping containment

If you suddenly notice musty odors or demolition-related smells in other parts of your home, speak up. This could indicate that contaminated air is escaping the work area. Don’t accept the explanation that it’s simply part of the process without asking how containment is being maintained.

5. Heating or cooling systems operating during demolition

Supply and return vents within the work area should be properly sealed or isolated. Allowing contaminated dust to enter the HVAC system can distribute it throughout the building. The system serving the affected area should generally be shut down or appropriately isolated during dusty demolition.

6. Contaminated debris carried through living spaces

Mold-contaminated drywall, insulation, and other materials should be securely bagged or wrapped before leaving containment. Workers should not carry loose contaminated debris through your home.

Warning Signs After Mold Remediation

7. Visible dust or debris left behind

After remediation, the work area should be thoroughly cleaned. Dust, drywall particles, sawdust, insulation fragments, or debris remaining on framing, floors, or other surfaces suggest incomplete cleaning.

8. Dark staining or suspected mold remaining on wood

Not all dark staining is mold, and some discoloration can remain after successful cleaning. However, suspicious areas should be evaluated rather than ignored, painted over, or covered with new drywall.

9. Remaining water damage or fiberglass insulation

Bubbling paint, warped baseboards, deteriorated drywall, and other signs of moisture damage should be investigated. Wet or contaminated fiberglass insulation should not be left inside wall cavities. The original moisture problem must also be corrected, or mold may return.

10. Air scrubbers running for days without filter maintenance

Air scrubbers are often left running for 24–48 hours after cleaning. However, heavily loaded pre-filters should be inspected and changed as needed, and HEPA filters should be maintained according to the manufacturer’s requirements. Ask whether the filters have been evaluated before the equipment continues operating.

11. The contractor wants to close the walls immediately

Once new drywall and insulation are installed, it becomes much harder to determine whether the remediation was successful. Independent post-remediation verification should ideally take place before reconstruction, while the affected areas are still accessible.

Five Questions to Ask Your Mold Remediation Contractor

Before work begins, ask these five questions:

  1. How will you prevent mold spores and contaminated dust from spreading into the rest of my home? Ask about containment, negative air pressure, and worker decontamination.
  2. How do you clean and maintain your equipment between jobs? This includes HEPA vacuums, air scrubbers, hoses, and filters.
  3. How will you protect my heating and cooling system? Ask whether vents will be sealed and whether the system will be shut down or isolated during demolition.
  4. How will you determine that all affected materials have been properly addressed? Ask about hidden mold, contaminated insulation, moisture measurements, and cleaning exposed framing.
  5. Will you allow independent post-remediation verification before removing containment and rebuilding? A reputable contractor should be willing to have the work independently evaluated against agreed-upon clearance criteria and return to do additional cleaning if the remediation verification fails.

Trust Your Observations. You Have Every Right to Ask Questions.

This may be the most important advice in this article.

You do not need to be a mold expert to recognize that something may be wrong. 

If you see a hole in the plastic containment, ask about it. If workers are walking through your home in dirty protective clothing, question it. If you smell musty odors in rooms that previously smelled fine, say something.

Don’t dismiss your concerns because someone tells you, “We’ve been doing this for 20 years,” or “This is how we always do it.”

Experience is valuable, but it doesn’t excuse improper procedures.

A professional contractor should welcome reasonable questions, explain their procedures, and correct problems when they are identified.

Your home is not the place to remain silent because you’re afraid of questioning a professional.

The Best Way to Know Whether Remediation Was Successful

The appearance of a clean room doesn’t necessarily mean the environment is clean.

Independent post-remediation verification can help determine whether contaminated materials were adequately addressed, moisture conditions are acceptable, and the work area meets appropriate clearance criteria.

Whenever possible, this assessment should be performed before containment is removed and before walls or ceilings are closed.

Remember: A five-star review measures customer satisfaction. Independent verification evaluates the quality of the remediation. They are not the same thing.

Indoor Environmental Testing, Inc. provides independent environmental assessments and post-remediation verification to help homeowners make informed decisions about their indoor environments.

We detect what you suspect.

Why She Smells It and He Doesn’t

Written by Martine Davis on . Posted in Uncategorized.

Have you ever noticed a musty smell in a basement—or even in your own home—while someone standing right next to you says, “I don’t smell anything”?

There may be a scientific reason for that.

Research has consistently found that women, on average, perform better than men at detecting, identifying, and distinguishing odors. A large meta-analysis published in Frontiers in Psychology confirmed this female advantage across several different measures of the sense of smell.

Why? Researchers believe there are several factors involved, including differences in the brain and the influence of sex hormones. Estrogen and testosterone both interact with the olfactory system. Some research has suggested that testosterone may decrease sensitivity to certain odors, although the relationship between hormones and smell is complicated and scientists have not established that testosterone universally suppresses the sense of smell.

We have an interesting real-world example of this from our own field.

One experienced female mold inspector had an exceptionally keen sense of smell. In fact, her nose was a valuable tool during mold inspections. She could often detect a musty or unusual odor immediately upon entering an area.

Later, she was prescribed testosterone therapy because of muscle loss. After beginning testosterone, she noticed something remarkable: her sense of smell had drastically diminished.

That is only one person’s experience, so we certainly can’t say that testosterone was proven to be the cause. But it is an interesting anecdotal observation considering what researchers have discovered about the relationship between reproductive hormones and our sense of smell.

But Sometimes It Isn’t About Whether You Smell It

There’s another fascinating part of this that we’ve noticed after years of investigating homes: two people may actually smell the same thing but interpret it differently.

During one basement inspection, a husband told us that he couldn’t smell mold. His wife, however, clearly could.

So instead of asking him again whether he smelled mold, I asked him a different question:

“Do you smell wet dirt down here?”

“Yes,” he replied.

That changed the conversation. He was detecting an odor. He simply wasn’t identifying it as a mold or musty odor.

Over the years, we’ve heard men describe odors in mold-affected environments as dirt, wet wood, earthy, damp, or an old-basement smell, while women may describe a similar odor as musty or moldy. That’s our observation from the field—not a scientifically established rule about men and women—but it demonstrates something important.

Our sense of smell isn’t just about what reaches our nose. The brain also has to recognize the odor, associate it with previous experiences, and decide what to call it.

That’s why, during an environmental investigation, asking someone “Do you smell mold?” may not be the best question.

Sometimes a better question is simply:

“What does it smell like to you?”

The answer may tell us much more.

So, if one person in your family keeps saying that something smells musty and everyone else thinks they’re imagining it, don’t dismiss them. Their nose may actually be picking up something yours isn’t—or you may both be smelling the same thing and simply describing it differently.

Martine Davis, BBEC

Indoor Environmental Testing, Inc.
We detect what you suspect.

Scientific references:
Sorokowski, P., et al. (2019). Sex Differences in Human Olfaction: A Meta-Analysis. Frontiers in Psychology, 10, 242.

Doty, R. L., & Cameron, E. L. (2009). Sex Differences and Reproductive Hormone Influences on Human Odor Perception. Physiology & Behavior, 97(2), 213–228.

Why Carpeting in Basements Often Leads to Mold Problems

Written by Martine Davis on . Posted in Uncategorized.

Carpeting in a basement often creates problems because the environment is fundamentally different from upper floors. Concrete slabs routinely transmit moisture vapor from the soil below, even when there is no visible water intrusion. Basements also tend to run cooler, which means warm indoor air can condense on or within materials near the floor. Carpet and padding are porous and absorbent, so they hold that moisture rather than allowing it to dry. Over time, this creates conditions where mold and bacteria can develop out of sight, and odors can build up without an obvious source.

Another issue is that carpet systems hide what’s happening underneath. On a hard surface, moisture problems are usually visible—discoloration, efflorescence, or damp spots. With carpet, those warning signs are concealed. The padding can stay damp for long periods, especially in low-airflow basement conditions. If a small leak, minor seepage event, or elevated humidity occurs, the carpet can become a reservoir for microbial growth. By the time a musty odor is noticeable, contamination may already be established within the carpet and pad, making simple cleaning ineffective.

The EPA advises against installing carpet in basements or any areas with chronic moisture problems.

If You Still Want Carpet: What Must Be Done First

If carpeting is going to be installed over a basement slab, moisture control has to be addressed first. This starts with verifying that the slab is dry using appropriate moisture testing, not just visual inspection. A continuous vapor barrier should be installed between the concrete and the finished flooring system to limit moisture migration. In many cases, a raised subfloor system that creates an air gap between the slab and the carpet is advisable. Dehumidification is also essential—basements should typically be maintained in the 40–50% relative humidity range year-round to reduce the risk of condensation and microbial growth.

Material selection and maintenance practices also matter. If carpet is used, it should be paired with moisture-resistant or low-absorbency padding rather than traditional foam padding that readily retains water. The space should have consistent air circulation, and any signs of moisture—odors, dampness, or spills—should be addressed immediately. Even with these precautions, carpeting remains a higher-risk flooring choice in basements.

Better Flooring Choices for Basements

For homeowners looking to reduce mold risk, non-porous or moisture-tolerant flooring options are generally a better fit for below-grade environments. Sealed concrete is one of the most reliable choices, as it eliminates layered materials that can trap moisture and is easy to clean and monitor. Luxury vinyl plank (LVP) and luxury vinyl tile (LVT) are also commonly used because they are water-resistant and do not absorb moisture like carpet or wood products.

These materials can perform well when installed over a proper vapor barrier and are less likely to support mold growth.

While LVP and similar products are often marketed as “waterproof,” that only applies to the material itself—not the conditions beneath it. If there is not an adequate vapor barrier between the slab and the flooring system, moisture can accumulate underneath the planks. This creates a concealed environment where mold can grow on the underside of the flooring or on the slab surface. In these cases, homeowners may notice a persistent musty odor even though the flooring looks clean.

Proper installation—including moisture testing and use of a continuous vapor barrier where needed—is critical to avoid these issues.

Additional Low-Risk Options

Other alternatives include ceramic or porcelain tile, which are highly resistant to moisture and durable over time. If a warmer surface is desired, removable area rugs can be used on top of hard flooring rather than installing wall-to-wall carpet. This allows for easier cleaning and removal if moisture issues arise. In situations where a finished look is needed but moisture remains a concern, engineered subfloor panel systems paired with moisture-resistant finishes can provide a more controlled assembly.

Final Thought from a Building Biologist 

“Basements don’t behave like the rest of the house. When you put absorbent materials like carpet directly over concrete, you’re often creating a hidden moisture trap. The problem isn’t always visible—but the air quality impact is real.”
— Martine Davis, Certified Building Biologist

Regardless of the flooring choice, controlling humidity and managing water at the source remain the most important factors in preventing mold in basement environments.

indoor air pollutants like allergens can impact your health

The Debilitating Path of Environmental Illness — And Why So Many Homes “Test Clean”

Written by Martine Davis on . Posted in Uncategorized.

Environmental illness rarely begins dramatically.

It begins subtly.

A little more fatigue.
A sinus infection that doesn’t resolve.
Difficulty concentrating.
Sleep disturbances.
Mild anxiety.
Headaches that feel “off.”

You adjust your routine. You push through.

Then months pass.
Sometimes years.

Doctors test. Labs return normal. You’re told stress may be a factor.

Eventually, someone suggests mold.

You hire an inspector.

And the report says:

“No significant findings.”

This is where doubt sets in.

If the home is clean, why are you getting worse?

At Indoor Environmental Testing, Inc., we work with many individuals who have walked this debilitating path. They are not looking for validation of fear. They are looking for resolution.

And one of the most frustrating aspects of environmental illness is how often homes “test clean.”

Why Homes Test Clean When They Aren’t

There are several reasons.

  1. Sampling Was Limited

One or two general air samples cannot represent:

  • Wall cavities
  • Ceiling spaces
  • Insulation
  • Subflooring
  • HVAC interiors
  • Soft furnishings

If those areas were not investigated, they were not ruled out.

  1. Mold Was Dormant or Not Aerosolized

Mold does not constantly release spores at the same rate. If sampling occurred during low disturbance conditions, air results may appear normal despite reservoir contamination.

  1. Health Context Was Ignored

A spore count interpreted as “normal” for the general population may not be tolerable for someone with environmental sensitivity.

Without considering the client’s health history, interpretation can be misleading.

  1. The Investigation Was Visual, Not Analytical

If nothing is visible, many inspectors stop there.

But hidden contamination does not advertise itself.

The Emotional Toll

Being told “everything looks fine” while your health declines creates a unique psychological burden.

You question your perceptions.
You hesitate to bring it up again.
You begin to feel isolated.

We have heard this story countless times from clients in Nashville and Madison.

The debilitating path of environmental illness is not just physical. It is emotional.

And when inspections fail to uncover the problem, that burden intensifies.

What Advanced Investigation Requires

True environmental investigation is not about checking boxes.

It is about:

  • Listening carefully to symptom patterns
  • Identifying environmental timelines
  • Evaluating hidden assemblies
  • Assessing building science factors
  • Testing strategically, not generically

It requires recognizing that some homes “test clean” because they were never truly examined.

You Are Not the First to Walk This Path

Many of our clients arrive after years of searching.

They are informed.
They are cautious.
They are skeptical.

They do not need basic education.

They need someone willing to go further.

We cannot promise that every home has contamination.

But we can promise that if contamination exists, we will pursue it thoroughly.

Because when someone’s health is declining, “probably fine” is not an acceptable conclusion.

Mold Beta-Glucan Testing: Detecting Hidden Fungal Contamination in Buildings

Written by Martine Davis on . Posted in Uncategorized.

When investigating mold contamination in buildings, many inspectors rely on spore trap air samples. While spore testing can provide useful information, it often misses an important part of mold exposure: microscopic fungal fragments.

Research over the past two decades shows that fungal fragments can be far more numerous than intact spores, and these particles often contain β-glucans, a key biomarker of fungal material.

Because of this, mold beta-glucan testing is increasingly used in indoor air quality (IAQ) investigations to detect hidden fungal contamination that traditional spore counts may overlook.

What Are Beta-Glucans?

β-glucans are structural polysaccharides found in fungal cell walls. They are present in:

  • Mold spores
  • Fungal hyphae (the branching structures that form mold colonies)
  • Fungal fragments and microscopic debris

When mold grows on building materials or when moldy materials degrade, these particles become airborne or settle into household dust.

Because β-glucans are part of the fungal cell wall, they serve as a marker of total fungal biomass.

Why Mold Beta-Glucan Testing Matters

Traditional mold testing methods measure only intact spores. However, multiple studies have shown that spores represent only a portion of airborne fungal particles.

Research by aerosol scientists Dr. Tiina Reponen, Dr. S. A. Grinshpun, and colleagues demonstrated that fungal fragments can be released during mold growth and mechanical disturbance.

In controlled aerosolization experiments, researchers found that fungal fragments could outnumber spores by hundreds of times (Górny et al., 2002).

These fragments often measure less than 1 micron, allowing them to penetrate deep into the lungs.

Scientific Evidence Behind Beta-Glucan Testing

Several major studies have established the importance of fungal fragments and β-glucans in indoor environments.

Fungal Fragments as Indoor Air Biocontaminants

Górny RL, Reponen T, Grinshpun SA, Willeke K.
Applied and Environmental Microbiology (2002)

This landmark study demonstrated that fungal fragments are released along with spores and may occur at concentrations hundreds of times higher than spores.

Citation:
Górny RL, Reponen T, Willeke K, Schmechel D, Robine E, Boissier M, Grinshpun SA. 2002. Fungal fragments as indoor air biocontaminants. Applied and Environmental Microbiology 68(7):3522-3531.

Fungal Fragments in Moldy Houses

Reponen T., Adhikari A., et al.
Atmospheric Environment (2007)

This field study measured airborne fungal fragments in mold-affected homes and confirmed the presence of submicron fungal particles in indoor air.

Citation:
Adhikari A, Reponen T, Grinshpun SA, Martuzevicius D, LeMasters G. 2007. Fungal fragments in moldy houses. Atmospheric Environment.

Beta-Glucans and Respiratory Health

Rylander R.
Indoor Air (1997; 2010 reviews)

Dr. Ragnar Rylander conducted pioneering work on β-glucans as inflammatory agents, demonstrating their role in respiratory irritation and immune activation.

Citation:
Rylander R. 1997. Airborne β-glucan and respiratory disease. Indoor Air.

Together, these studies established that fungal fragments containing β-glucans are a major component of indoor mold exposure.

According to the EPA “Allergic reactions to mold are common and can be immediate or delayed. Repeated or single exposure to mold, mold spores, or mold fragments may cause non-sensitive individuals to become sensitive to mold, and repeated exposure has the potential to increase sensitivity”.

 

Spores vs Fungal Fragments

Traditional mold tests primarily measure spores, but buildings also contain many microscopic fragments.

Because fragments are often much smaller than spores, they remain airborne longer and can travel throughout buildings.

What Mold Beta-Glucan Testing Detects

β-glucan testing measures total fungal biomass, including:

  • Spores
  • Hyphal fragments
  • Degraded fungal debris
  • Microscopic fungal dust

This makes it useful for detecting hidden mold problems.

Common scenarios where beta-glucan testing helps include:

Hidden Mold in Wall Cavities

Mold growing inside walls may release fragments even when spores are not detected.

Post-Remediation Evaluation

Beta-glucans can identify residual fungal dust remaining after remediation.

Buildings with Symptoms but Low Spore Counts

Occupants may react to fragments rather than spores.

Laboratories Offering Mold Beta-Glucan Testing

Several environmental laboratories offer β-glucan analysis for indoor air quality investigations.

EMSL Analytical

Large international environmental laboratory.

Typical price:
$80 – $150 per sample

Services include:

  • Dust beta-glucan analysis
  • Air filter analysis
  • Environmental microbiology testing

Eurofins EMLab P&K

One of the largest mold testing labs in North America.

Typical price:
$100 – $180 per sample

They provide a full range of IAQ services including:

  • mold spore analysis
  • fungal biomass markers
  • building investigations

Mycometrics

Specialized microbial testing laboratory focusing on fungal contamination.

Typical price:
$120 – $200 per sample

Offers assays for fungal biomass markers including β-glucans and ergosterol.

Environmental Diagnostics Laboratory (EDLab)

Environmental testing laboratory providing advanced IAQ analyses.

Typical price:
$100 – $200 per sample

Limitations of Beta-Glucan Testing

While beta-glucan testing is useful, it does have limitations:

  • It does not identify specific mold species
  • It cannot determine whether contamination is active or historical
  • Small amounts may originate from non-fungal organic materials

Because of these limitations, most investigators use beta-glucan testing alongside other diagnostic methods.

Best Practice for Mold Investigations

The most effective building investigations combine several techniques:

  • Visual inspection
  • Moisture mapping
  • Spore trap air sampling
  • Dust testing (ERMI / HERTSMI-2)
  • Mold beta-glucan testing

This multi-method approach provides a more complete understanding of fungal contamination.

Final Thoughts

Scientific research over the past two decades has shown that mold exposure is not limited to spores. Microscopic fungal fragments—often containing β-glucans—can be present at much higher concentrations and may play an important role in indoor air quality and occupant health.

Because of this, mold beta-glucan testing is becoming an important tool for detecting hidden mold contamination in buildings.

For inspectors, industrial hygienists, and building scientists, beta-glucan testing can provide valuable insight into total fungal biomass and residual mold contamination that traditional testing methods may miss.

Key References

Górny RL, Reponen T, Willeke K, et al. 2002. Fungal fragments as indoor air biocontaminants. Applied and Environmental Microbiology.

Adhikari A, Reponen T, Grinshpun SA, et al. 2007. Fungal fragments in moldy houses. Atmospheric Environment.

Rylander R. 1997. Airborne β-glucan and respiratory disease. Indoor Air.

 

 

Can You Sell a House with Mold? The Answer May Surprise You.

Written by Martine Davis on . Posted in Mold Illness Mold Sickness, Mold Inspection, Mold Prevention, Mold Testing, Uncategorized.

Image

Mold can be a frightening discovery when buying or selling a home. Buyers worry about what might be hidden behind the walls, and sellers worry that a mold problem could derail the sale.

After years of conducting environmental assessments for both buyers and sellers, we’ve seen some surprising situations. Homes with serious mold contamination have sold, sometimes without the buyers being particularly concerned. Meanwhile, buyers have walked away from homes with relatively minor problems.

What we’ve learned is that mold doesn’t always determine whether a house sells. Often, it’s the buyer’s perception of the problem that makes the difference.

When Serious Mold Problems Don’t Stop a Sale

We’ve assessed homes with extensive water damage from roof leaks, where testing revealed elevated mold levels inside most of the wall cavities.

These weren’t small, isolated problems. The findings suggested widespread contamination that could require opening numerous walls and removing affected building materials.

You might assume discoveries like these would make a home impossible to sell. But in our experience, even these severely affected homes eventually sold.

In some situations, sellers were prepared to substantially reduce their asking price to compensate for the mold. Yet some buyers weren’t particularly concerned. They might have been planning extensive renovations anyway, or they simply didn’t view mold as a major issue.

It’s an interesting reminder that what one buyer considers a deal breaker, another may consider a manageable renovation expense.

Sometimes a Much Smaller Problem Ends the Deal

We’ve also seen the opposite situation.

A buyer hires us to assess a home before purchasing, and we discover a relatively minor mold problem, such as localized contamination around a window that previously leaked or a small area of mold growth under a kitchen sink.

These are generally manageable problems that can be corrected without extensive remediation. Yet some buyers, particularly those who are highly sensitive to mold or have experienced health problems associated with previous exposures, may decide not to proceed with the purchase.

What one buyer considers a routine repair, another may consider a deal breaker.

Why More Sellers Are Testing Before Listing

We also work with homeowners who want to know whether their property has a mold problem before putting it on the market. This can be a very smart decision.

For example, we sometimes find basement mold associated with poor grading around the foundation. Rainwater has been directed toward the house rather than away from it, creating moisture conditions that support mold growth.

When identified early, the homeowner has an opportunity to correct the drainage problem and complete any warranted remediation before listing the property.

Compare that with discovering the same problem during a buyer’s assessment, when everyone is under pressure to meet a closing deadline.

Finding out ahead of time gives sellers more control over the situation.

Do You Have to Disclose Mold When Selling Your Home?

This is one of the most common questions homeowners ask us, especially when they’re considering having their property tested before putting it on the market.

Some sellers are concerned that if testing reveals mold, they’ll be legally obligated to disclose it to potential buyers. That concern sometimes makes homeowners hesitant to investigate a suspected problem.

In Wisconsin, sellers of most residential properties are required to complete a Real Estate Condition Report that addresses known defects, including certain water intrusion and mold-related conditions. Tennessee and other states have their own disclosure requirements.

Having a mold assessment doesn’t necessarily mean your home will be harder to sell. In fact, identifying a problem, correcting the moisture source, completing appropriate remediation, and documenting the work can give prospective buyers greater confidence in the property.

What sellers should understand is that ignoring a suspected problem doesn’t necessarily eliminate their disclosure obligations. Disclosure requirements depend on state law, the seller’s knowledge, and the circumstances of the property.

If you’re uncertain about what must be disclosed, consult your real estate agent or a qualified real estate attorney.

The goal isn’t to find reasons a house can’t be sold. It’s to identify problems early enough that they can be addressed before they become obstacles to a successful transaction.

The Problems Nobody Knew Were There

One of the most important things we’ve learned is that a home can look perfectly normal while having significant hidden mold contamination.

We’ve tested wall cavities in homes where previous water leaks had caused moisture to travel through the structure. The visible surfaces didn’t necessarily reveal the extent of the damage.

A standard home inspection might identify evidence of an old leak, but it generally won’t determine what’s growing inside those wall cavities.

So, Is Mold a Deal Breaker?

Not necessarily. The important thing is understanding what you’re dealing with.

Is the mold limited to one area, or is it widespread? Has the moisture source been corrected? How extensive will remediation be? And is the buyer comfortable with the findings?

For sellers, identifying problems before listing can prevent unpleasant surprises. For buyers, knowing the actual conditions can help distinguish a manageable repair from a potentially expensive project.

Our Advice After Years of Testing Homes

Don’t assume a house is problem-free because there’s no visible mold. And don’t assume a house with mold is automatically a bad investment. We’ve seen both extremes.

The best decisions are made with accurate information, not assumptions.

Whether you’re buying, selling, or simply trying to understand the condition of your home, a thorough environmental assessment can provide valuable answers.

Indoor Environmental Testing, Inc.

We detect what you suspect.

www.airinspector.com

Mold Health Effects: 5 Tips to Stay Safe

Written by Martine Davis on . Posted in Mold Prevention, Uncategorized.

Mold—a word that might make you shudder, and for good reason. Often lurking in hidden corners or damp spaces, mold is more than just an unsightly inconvenience. It can pose serious health risks, especially to certain vulnerable groups. In this blog, we’ll explore how mold affects health, who is most at risk, and what you can do to protect yourself and your loved ones.

What is Mold and Where Does it Grow?

Mold is a type of fungus that thrives in damp, humid environments. Found both indoors and outdoors, it spreads through airborne spores. Common indoor sources include leaky pipes, poorly ventilated bathrooms, and basements with moisture issues.

Fun fact: Did you know that mold spores are nearly everywhere, but they only grow into colonies when given the right conditions? Unfortunately, those “right conditions” often overlap with our living spaces!

The Health Risks of Mold Exposure

Mold exposure can lead to a range of health problems, depending on the type of mold, the level of exposure, and an individual’s susceptibility. Here’s a breakdown of common effects:

Respiratory Issues: Mold spores can irritate the respiratory system, causing coughing, sneezing, and throat irritation.

Allergic Reactions: Many people are allergic to mold, which can trigger symptoms like itchy eyes, a runny nose, or skin rashes.

Asthma Complications: For those with asthma, mold can exacerbate symptoms or even trigger attacks.

Chronic Effects: Prolonged exposure to toxic molds, like *Stachybotrys chartarum* (commonly known as “black mold”), has been linked to more severe issues like memory problems, fatigue, or lung inflammation.

Children, the elderly, and those with compromised immune systems are particularly vulnerable to mold’s effects.

Signs of Mold in Your Home

Mold doesn’t always announce itself with a musty smell or visible patches. Other signs include:

– Persistent water stains or peeling paint.

– Increased humidity or condensation on windows.

– Health issues among family members that improve when they’re away from home.

Preventing and Addressing Mold

To keep mold at bay, try these tips:

1. Control Humidity: Aim for indoor humidity levels below 60%, ideally between 30-50%.

2. Fix Leaks Promptly: Whether it’s a dripping faucet or a roof leak, address moisture sources quickly.

3. Ventilation is Key: Use exhaust fans in bathrooms and kitchens, and ensure proper airflow throughout your home.

4. Regular Inspections: Check damp areas like basements, under sinks and behind toilets sinks for early signs of mold.

Thermal imaging device

5. Professional Help: If mold infestation is significant, consult a mold expert. A few hundred dollars for a mold inspection can end up saving thousands of dollars in damage

Conclusion

Mold is more than just a household nuisance; it’s a genuine health concern that warrants attention. By understanding its risks and taking proactive measures, you can create a safer and healthier environment. Remember, the battle against mold starts with awareness. Share this blog with friends and family—they might thank you for it!

For more information about Mold’s Health Effects, visit the CDC web page about mold

Should you buy a house with a crawl space?

Written by Martine Davis on . Posted in Air Quality Testing, Mold Prevention, Uncategorized.

When buying a house with a crawl space, potential extra costs include: crawl space encapsulation (to prevent moisture and pests), repairs for existing moisture damage like wood rot, additional insulation, pest control treatments, and potential structural repairs related to water damage; all of which can significantly add to the purchase price of the home.

Moisture is the plague of crawl spaces everywhere and is a big deal because it can impact finances and physical health. So what are the consequences of moisture in a crawlspace?

#1: Energy Costs

Vented dirt crawl spaces are costly since they create damp conditions upstairs, which requires more energy to heat. Damp air also puts more strain on an HVAC system.

Taking care of humidity problems in a crawlspace can save 15-25% depending on the size of the house, whether ducts are located in the crawl, how many stories the house has, etc.

Simply caulking around windows doesn’t fix the problem.

#2: Pests

A moist and moldy crawl space attracts pests. Rodents, insects, snakes and more can make their way into the home; some die in the crawlspace. As they decay, they create offensive odors that rise into the occupied space.

High humidity conditions in the living space invite dust mites and their droppings. These droppings exacerbate symptoms for allergy and asthma sufferers.

A moist crawlspace also favors termites due to the abundance of wet wood and since homeowners rarely visit their crawlspace, they don’t know that the home is being eaten away from the inside.

#3: Mold

Moisture settles on exposed surfaces, including joists, beams, fiberglass insulation, and drywall. As long as moisture is present, mold grows and spreads. If you’ve ever visited an older home and smelled a musty odor, mold probably was the culprit and 9 times out of 10, that musty odor comes from a basement or crawl.

Photo courtesy of Santa Fe Dehumidifiers

Mold in the crawl (or basement) has a direct impact on people living in the home. Because of the “stack effect,” air moves from below-grade spaces into the upper levels of the house. Warm air travels upward and escapes through cracks, windows, vents, and other openings. As the air rises, it carries allergens, spores, soil gases like radon, mold gases, dust, and harmful elements that infiltrate the living space. This often causes asthma, allergies, and respiratory problems for occupants.

#4: Rot

Moisture leads to mold and mold leads to rot. Rot eats away at wooden joists, beams, and drywall. It causes structural issues, like spongy floors, doors and windows that don’t close properly, buckling or sagging floors.

The options are to fix the moisture problem or replace floors and repair the foundation. 

Controlling humidity and water intrusion are essential. To accomplish that, an encapsulation system, dehumidifier and sump pump are usually recommended.

The Solution

Crawlspace encapsulation by a crawlspace expert will insulate damp earth and keep the area airtight, dry and energy efficient. A vapor barrier is installed on the walls and floors of the crawl, preventing water vapor and humidity from reaching vulnerable surfaces like joists and subfloor. The liner is mold and mildew resistant and usually comes with a 25-year warranty. This liner creates an inhospitable environment for pests and prevents summer heat and winter cold from invading.

Then a large dehumidifier is installed. These are usually efficient, low-maintenance systems that come with a 5-year warranty and are designed for usage in below-grade spaces. Ideally, the contractor will install a crawl space door composed of inorganic materials (foam board or plastic) not susceptible to rot and rust. It’s crucial to create an airtight seal between the crawl and outside air.

If necessary, your contractor may also recommend a drainage matting system to be installed underneath the liner to direct water to a perimeter drain and sump pump system to keep water from pooling and creating long-term damage.

The adage “you pay now or pay later” certainly applies to crawl spaces!

For more information about crawlspaces visit https://www.fema.gov/about/glossary/crawlspace and

https://www.energystar.gov/saveathome/seal_insulate/basement_crawlspace

WHY MYCOTOXINS NEVER DIE

Written by Martine Davis on . Posted in Uncategorized.

Indeed, mycotoxins don’t die, because …
Mycotoxins were never living organisms to begin with.
Mycotoxins are chemical substances deliberately produced by hazardous molds, mostly with the objective of inflicting damage. Why do molds produce mycotoxins?
Well molds have a great sense of survival and they will do whatever is necessary to safeguard their space, their food source and their existence.
Why do molds enter a defensive state and produce mycotoxins?
  1. Defense Mechanism — In response to threats from other microbes, mold synthesizes mycotoxins to keep the competition away. Consider it their declaration of territorial ownership.
  1. Competition for Resources – Mycotoxins keep other mold species and bacteria away to safeguard their food (dust) and habitat (damp or wet surface).
  1. Environmental Stressors: Variations in temperature, humidity, or nutrient availability may prompt mold to excrete mycotoxins as a survival mechanism.
It is crucial to acknowledge that mycotoxins may persist in your environment even after you’ve removed the mold from your house. This is why we recommend a detailed cleaning or “Bio Cleaning” after remediation. Mycotoxins are chemically very stable and will endure long after the mold has disappeared.
Mycotoxins burden the liver and kidneys, undermining your ability to eliminate toxins. This can cause a variety of symptoms even after the mold is gone. This underscores the significance of mycotoxin testing. Eliminating the sources of mold constitutes merely the initial element of the cleanup process. The second phase involves eliminating the byproducts disseminated by those sources within your residence (bacteria, beta glucans, mites, etc.).
For more information on testing your home for mold and mycotoxins, contact our office at 800-MY-AIR-TEST.
Above illustration courtesy of Mosaic Diagnostics, formerly Great Plains Laboratories