Everything You Want to Know About Mold, Inspections, and Remediation—All in One Place
Have questions about mold in your home or business? You’re not alone. At ZeroMold, we believe in transparency and education—because the more you know, the better decisions you can make.
Below, we’ve answered the most common questions we get from clients about mold testing, removal, costs, health risks, and more. If you don’t see your question here, don’t hesitate to reach out. We're always here to help you breathe easier.
Mold is a type of fungus that thrives in moist environments. While it's a natural part of the ecosystem, indoor mold can cause health issues and damage property.
Yes.
When mold is growing in a home, toxic spores are being released and flowing through the vents and air ducts to every room.
The spores are then breathed in by the occupants and can cause serious medical problems.
Mold is definitely harmful to breathe. The severity of the mold as well as the type of mold and the individual tolerance will factor into the actual effects the mold has on the human body. Growth often occurs in hidden places inside a home and is the source of mysterious illnesses.
Exposure to mold can lead to allergic reactions, respiratory problems, and other health issues, especially in individuals with asthma or weakened immune systems.
Mold often grows in damp areas like bathrooms, basements, kitchens, and around windows. It can also be hidden behind walls or under flooring.
Mold can impact your health long before you see it. Common signs of mold exposure include:
Persistent coughing or sneezing
Itchy, watery eyes
Runny nose and congestion
Skin rashes or irritation
Fatigue and headaches
Shortness of breath
Worsened asthma or allergies
Blurred vision or ear infections
Heightened anxiety or brain fog
Long-term exposure can lead to serious health issues like chronic bronchitis, nervous system disorders, heart problems, and even certain cancers. At ZeroMold, we’ve handled every kind of mold issue—big and small. Our proven process helps families and businesses breathe easier with cleaner, healthier air.
Yes, our products are very safe and non-toxic.
We can confidently use our products knowing that you are extremely unlikely to have any reaction to it. We have performed thousands of treatments with occupants who suffer with such ailments as asthma and others with low immune systems. All have reported improvements in their own well-being following mold removal and fogging.
Aside from a water intrusion event such as flooding, leaking roofs, damaged pipes or hot water systems etc, the most common cause of mold comes from air exchange issues. Air exchange issues arise when excess humidity is present.
This is very common at times when the outside air is cooler than the inside air. This will result in condensation and subsequently an excess of moisture inside your home.
Struggling to breathe indoors? Constantly congested or getting sick for no clear reason? These could be warning signs of hidden mold in your environment. Mold often grows in damp, poorly ventilated areas—and some species release toxins that can seriously impact your health.
If you’re noticing:
Breathing difficulties
Persistent coughing or congestion
Worsening allergies or frequent illness
…it’s time to schedule a professional mold inspection. Early detection can protect both your health and your home.
Mold isn’t just unsightly—it’s a health hazard. If you notice any of the following signs, it’s time to call in a professional:
Black, green, or pink spots on walls or ceilings
Musty or earthy smells
Peeling, bubbling, or cracking paint or wallpaper
High indoor humidity
Visible water damage or past flooding
The root cause of mold is always moisture. Whether from leaky pipes, poor ventilation, cracked foundations, or daily activities like cooking and showering, any moisture left unchecked creates the perfect breeding ground. Mold Can Grow in Just 24–48 Hours.
If you see signs—or even suspect mold—act fast. Delaying treatment can lead to serious structural damage and long-term health risks. ZeroMold offers professional mold remediation that eliminates mold at the source and restores healthy air to your home.
A thorough inspection includes a visual assessment, moisture readings, and air or surface sampling to identify mold presence and sources.
hile DIY kits are available, they may not provide accurate results. Professional testing ensures reliable identification and assessment.
Call ZeroMold—your trusted local experts with over a decade of hands-on mold remediation experience. Our in-house certified inspectors provide accurate results and honest assessments you can rely on.We offer full-service mold solutions—from testing to complete removal—all handled by one expert team.
For certain specialized tests, we partner with accredited third-party labs to ensure precision and transparency every step of the way.
Yes—older homes are more prone to mold, especially if they include brick or stonework. Over time, cracks and crevices in the foundation can trap moisture, creating the perfect environment for mold to grow.Often, the only early signs are musty odors or unexplained health symptoms. If you're unsure, it's always best to call a certified professional for a thorough inspection and testing.
The time it takes to test for mold depends on the type of testing being performed. In most residential homes, the sampling process can take anywhere from 5 minutes to 1–2 hours, depending on the number of areas being tested and the methods used.
Turnaround times for results also vary:
Instant tests (like some diagnostic tools) provide results on the spot
Lab-based tests can take anywhere from 24 hours to several days
Viable mold cultures may require up to two weeks for full incubation
Your mold inspector will recommend the best testing method based on your specific situation—and let you know what to expect for timing.
Mold testing costs can vary depending on the scope of work and your specific needs. While prices are typically calculated on a case-by-case basis, here are the key factors that affect the final cost:
Type of test – Air, surface, bulk, or mycotoxin testing all have different pricing
Number of samples – More samples = higher lab and processing fees
Turnaround time – Rush lab results often come with added fees
Additional costs – Travel, technician time, and administrative fees may apply
In general, mold testing starts at $75–$100 per sample, with a minimum service charge of around $495 for most professional assessments.Want a custom quote? A certified mold inspector can evaluate your needs and provide an accurate estimate based on your property.
Mold can be tested in several ways—and the right method depends on what you're trying to find out. Whether you're identifying a visible growth or investigating a hidden odor, each testing method provides different insights into your indoor environment.Here are the most common mold testing methods:
Air Testing – Detects airborne mold spores (viable & non-viable)
Surface Testing – Uses swabs or tape lifts to identify mold on visible surfaces
Bulk Testing – Involves analyzing pieces of materials like drywall or insulation
Diagnostic Testing – Includes instant protein analysis or VOC testing for deeper insights
Visual Inspection – Performed by a trained expert to identify mold and moisture issues
Each method has its pros and cons. For example, if you’re trying to identify a specific mold type growing on a surface, a swab or tape test is ideal. If you're chasing down a musty odor or suspect hidden mold, air testing is often the best choice.To get the most accurate results, it’s always best to work with a certified mold professional. They’ll know which tests are right for your situation—and how to perform them properly.
Mold testing can be highly accurate—when done under the right conditions. Several factors influence the reliability of the results, including:
Experience of the inspector – Skilled professionals know how to properly collect and interpret samples
Condition of testing materials – Calibrated, well-maintained equipment ensures accurate sampling
Type of test used – Air tests, surface swabs, and bulk samples each have different strengths
Requested analysis – Some tests identify mold type, others detect toxins or spore counts
Environmental conditions – Dust, recent construction, or excess moisture can skew results.
When performed by a certified professional using the correct method, mold testing provides dependable data to help guide next steps in remediation or prevention.
Safeguard Your Health:
Mycotoxins are carcinogenic and can cause significant brain effects such as neurologic and neuropsychiatric signs and symptoms, so testing for them can safeguard you and your family.
Take Control of Your Air Quality:
Inhaled mycotoxins have direct access to the bloodstream, presenting a serious health hazard, but mycotoxin air testing can detect their presence and guide proper removal actions.
Post-Remediation Verification:
Air and surface mycotoxin testing can confirm the effectiveness of mold remediation in removing mold-produced mycotoxins from your space.
Lingering Mycotoxins:
Mycotoxins can persist in structures long after mold removal efforts, posing health risks that emphasize the importance of testing and taking steps for their removal.
Mold remediation involves removing mold and addressing the underlying moisture problem to prevent future growth.
The duration depends on the extent of the mold problem. Minor cases may take a day, while extensive issues could require several days.
In many cases, yes. Professionals use containment methods to isolate affected areas. However, for extensive remediation, temporary relocation might be recommended.
Yes! We do have a guarantee and a 1-year warranty.
Guarantee:
ZeroMold guarantees that after treatment the indoor mold levels will be at safe levels in accordance with current outdoor mold levels or International Standards Organization (ISO) standard and in coordination with the World Health Organization.
Warranty:
Mold Services are warrantied for a period of 1 year when the entire property is treated. If at anytime during the following 12 months, mold is found in the area of service at a greater density than the outside air, ZeroMold will re-treat the area at no charge. Warranty is void if additional water is introduced to premises, or if any current water issues have not been fixed. Attics and crawl spaces are not included in warranty.
Trying to tackle mold on your own might seem like a way to save money—but unless it’s a tiny, isolated issue, DIY mold removal can do more harm than good. Most mold problems are caused by hidden moisture issues. Without fixing the source, the mold will come right back—often worse than before. Proper mold abatement isn’t just cleaning—it’s a step-by-step process:
Identify and eliminate the moisture source
Set up containment to prevent spread
Wear the right protective gear
Use professional-grade equipment
Safely dispose of contaminated materials
Missing any of these steps can make your home and health worse off. When in doubt, call in the pros. ZeroMold handles the entire remediation process—safely, thoroughly, and for less than you think.
With over 30 years of experience in mold remediation, we’ve developed a system that works—fast, safe, and effective. Our advanced technology cuts down on labor time, which means real savings for you. We use the industry’s most powerful tools and techniques, including:
Biostatic fogging
Targeted demolition (when necessary)
HEPA air scrubbers and vacuums
Professional containment and sealing
Surface disinfection and long-term treatments
Our process has been tested on thousands of homes and businesses—and it works. ZeroMold delivers real results you can see, breathe, and trust.
Yes! We have all the equipment and methods to do whatever it takes to do the job right.
Fogging is just one of the many tools we use to make your home mold free.
Our biostatic nano-fog will handle most mold problems. But if mold is hiding inside the wall it must be accessed to be properly removed. Sometimes we can drill a small hole in the wall and fill the wall cavity with fog. But if inside the wall is filled with excessive mold we will need to access the wall cavity to completely remove the source.
The source of the mold must be remove to make sure that the mold spores will not return. With our technology we remove much less of the structure than standard methods - saving you thousands of dollars in repairs.
Companies claiming to remove mold inside walls with fogging only are not removing the source of the problem and can lead to mold spores returning.
Not always.
Mold spores spread and are carried on your clothing as well as being present in the air.
We can test different areas in the house and see what is needed.
Your home will need to be vacant during the dry fog remediation process.
Plan a place for you and your pets to be during our scheduled service.There is no need to cover any of your furniture, our fog leaves no residue.
Average is about 3-4 hours.
Our system means that unlike other companies we do not require you to vacate your home for an extended amount of time. In most cases we are in and out within the same day.
ZeroMold uses its own proprietary system. The "Air & Surface Solution", a proprietary non-toxic, food grade solution that is used to remove mold spores in the air and on surfaces. It does this by attracting spores with a static charge, seeking out and going after the spores from all the nooks and crannies, where mold likes to hide. Once found, the solution penetrates the spore membrane and dissolves the spore from the inside out, leaving no trace of the mold or residue. Best of all, it will eliminate the spores throughout your home, thus preventing other colonies of mold being able to form in other rooms/areas.For the visible mold on surfaces,
ZeroMold also uses "Stain Remover Solution", a proprietary solution that dissolves the mold on contact within seconds. It works great on hard surfaces, such as walls, ceilings, tiles, wood and concrete.
No harsh chemicals are used in our process. Our products are biodegradable, non toxic, low/non irritant and non corrosive. Safe for your family, pets and the environment.
Upon completing the service, the ZeroMold technician can perform mold testing. This could be air samples, tape tests, etc. depending on the situation.
The test samples will be sent to a third party, accredited mold lab for analysis. The results provided by the lab to ZeroMold will be forwarded to you. The technician will be able to explain the tests and address any questions or concerns that you may have. These results typically take 2-3 business days.
The cost of mold removal depends on the size of the problem and how far the contamination has spread. Since it's hard to assess accurately through photos or phone calls, we don't give blind estimates.
That’s why ZeroMold offers a detailed Scope of Work Assessment. Our certified technician will inspect the affected areas, take any needed tests or readings, and provide a clear, accurate plan—along with a reliable cost estimate for full mold remediation.
ZeroMold’s Price Match Guarantee
We believe in fair pricing without scare tactics. If you get a written quote from another mold removal company, we’ll match or beat it.
Because of the technology developed by ZeroMold, they are able to transfer savings to the customer.Based on comparisons done, ZeroMold prices are usually more than 50% less expensive than other bids issued by mold removal companies.
With ZeroMold, you get top-tier service and the best price—guaranteed.
Coverage depends on your policy and the cause of the mold. Damage from sudden events like pipe bursts may be covered, while gradual issues often aren't.
Yes, we provide flexible financing plans to help manage the costs of inspection and remediation services.
Finding the right mold remediation company can be tough—but there are key things to look for that make the decision easier.First, make sure the company is certified, fully insured, and follows industry standards like ANSI/IICRC S520. You can check ZeroMold’s credentials on our Certifications page. A trustworthy professional won’t rush to give you a quote. They’ll ask questions, inspect the issue in person, and explain their process before making any promises.
And don’t forget to check reviews. Hearing from real customers is one of the best ways to gauge a company’s honesty, service quality, and results. With ZeroMold, you get transparency, certified expertise, and a reputation backed by thousands of happy clients.
How can I prevent mold growth in my home? Maintain low indoor humidity (30-50%), ensure proper ventilation, fix leaks promptly, and use dehumidifiers in damp areas.
Avoid disturbing it, as this can release spores. Contact a professional to assess and address the issue safely.
No, painting over mold doesn't eliminate it and can lead to further problems. Proper removal and remediation are necessary.
If you have more questions or need personalized assistance, don't hesitate to reach out to our team. We're committed to ensuring your home is safe, healthy, and mold-free.