Best 8 how to test my home for mold

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The Best At-Home Mold Tests to Use Around Your Home – The …

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  • Summary: Articles about The Best At-Home Mold Tests to Use Around Your Home – The … The Best At-Home Mold Tests to Use Around Your Home ; Best Overall: LabTech MoldOK Detection Test Kit.

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    The type of test you choose will depend on what you are testing for the presence of mold i.e. a surface, bulk material, or the air. For surface testing, you’ll likely use a mold test kit with tape strips to lift a sample. Or, you might use a swab to send a sample into a lab or to spread a sample on…

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How to Test for Black Mold – This Old House

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  • Summary: Articles about How to Test for Black Mold – This Old House If you hire a professional mold inspector to come to your home, they’ll take samples from three areas—the air, the surface, and surrounding dust. They send …

  • Match the search results: The Mold Armor kit includes a test swab, petri dish, and a bottle of mold growth medium. You can use this single kit in one of three ways—to test the air for mold spores, to test air quality in your HVAC duct, or to test for surface mold.

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How to Test Your Home for Mold and What to do About it

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  • Summary: Articles about How to Test Your Home for Mold and What to do About it A simple test you can conduct is to add a few drops of household bleach to the area in question. After dropping bleach on the surface, you …

  • Match the search results: Because mold loves warm and humid places as well as areas with very little light, there are a few areas in your home that can develop molds, such as your bathroom, kitchen, and basement. As such, it is important to understand that, under the right conditions, mold can begin to grow rather quickly. I…

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Who can test my home or clean, fix and remediate my home …

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  • Summary: Articles about Who can test my home or clean, fix and remediate my home … EPA does not have a certification program for mold inspectors or mold remediation firms. EPA does not maintain a list of mold inspectors or mold remediation …

  • Match the search results: EPA does not have a certification program for mold inspectors or mold remediation firms. EPA does not maintain a list of mold inspectors or mold remediation firms, though some states might.

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Mold Testing

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  • Summary: Articles about Mold Testing Our professional mold testing can help you find hidden mold, measure your indoor air quality and identify what species of mold is in your home.

  • Match the search results: Mold is a type of fungi that thrives in moist environments due to moisture intrusion, high humidity levels, and inadequate ventilation. Mold can spread throughout a building in as little as 48-72 hours. It can grow out in the open or grow hidden in the attic, basement, and wall cavities. There are t…

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Testing for Black Mold | HGTV

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  • Summary: Articles about Testing for Black Mold | HGTV If you go the DIY route while testing for black mold, you will need to purchase a mold testing kit from a hardware or home repair store, take samples of the air …

  • Match the search results: Sight and smell may give you a good indication of whether or not you have a black mold problem — black mold tends to have a strong, musty smell, and of course it displays a trademark black color. If you believe you have black mold growth in an area of your home after these initial inspections, …

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Best Mold Test Kits 2022 | Top Ten Reviews

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  • Summary: Articles about Best Mold Test Kits 2022 | Top Ten Reviews With up to four mold testing methods, the best mold test kits use a few tried-and-tested methods to detect mold in your home.

  • Match the search results: Reputable mold test companies include their telephone numbers and email addresses on their websites. In addition to contact information, you might want to select a company that has strong support options, including FAQs and video tutorials. Aside from our top two products, the Pro-Lab Mold Test Kit …

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Mold Testing | NC State Extension Publications

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  • Summary: Articles about Mold Testing | NC State Extension Publications With the increased concern about mold and it’s affect on a health, many homeowners are asking the question, “Should I have my home tested or …

  • Match the search results: The US Environmental Protection Agency (EPA) advises that mold sampling usually isn’t warranted if you can see visible mold growth. There are currently no threshold limits for mold or mold spores, so sampling a home for mold will not tell the homeowner whether or not their home’s mold sa…

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Multi-read content how to test my home for mold

How to Test for Mold


Have you ever walked into a bathroom and stopped to question the sentimentality of the space? It’s not in the news that these wetlands are a breeding ground for mold and mildew, fungi that help natural elements break down so they can biodegrade. But while their presence can be important outdoors in your compost pile, they are not welcome in homes and buildings due to the damage they can cause and affect the health of their tiny spores, which can be easily released into the air and inhaled as mold grows.

Sometimes mold is accompanied by other signs that mold is present: discolored spots on walls and floors, noticeable dampness development, and respiratory problems. Other times it is less obvious that there is a problem.

RELATED: The Dark and Dirty Truth About Indoor Mold (And How to Get Rid of It Yourself)

If you’re concerned about mold in your indoor air, you can rest easy knowing exactly how to test for mold. Lucky for you, testing can be as simple as purchasing a viable mold test kit and collecting samples from strategic locations by following the instructions outlined below. In the best-case scenario, the results turn out to be negative and you can rest assured that the smell is only temporary. In the worst case scenario, if the test results are positive for mold spores, you can send the results to a lab to determine the type of mold in your home and how to deal with it effectively.

How to Test for Mold



To grow, mold needs moisture, so mold is often found in damp places. For example, plumbing leaks often cause mold to grow and should be fixed as soon as they are discovered. Mold that can be seen anywhere in the home should be quickly eliminated using the following safe mold removal methods. But what about mold growth that you can’t see? If there is a musty smell with no visible signs of mold (black, white, or brown siding), chances are you have mold somewhere hidden.

Here are some of the most common places where mold grows undetected and therefore smart places to check for mold:

  • behind your fridge
  • Under piles of newspapers or boxes
  • Behind the plaster wall in the nail space are water pipes
  • under sink
  • Behind the wall around the leaky windows
  • In the ventilation duct
  • Under a formerly wet carpet (flooded, washed carpet)
  • The back of the ceiling slab (if the roof is leaking)
  • Behind any drywall that has been flooded


Mold test kits are widely available at home improvement stores and online retailers, but not all test kits are created equal. Some are designed to determine only if there is mold on the surface. To test for mold spores in the air you breathe, you will need to purchase a viable mold test kit that costs between $20 and $45 (see example on Amazon). The whole testing process will take a few days and if the test you are performing determines that mold spores are present in the air, you can send the test materials to a lab who will perform another test to determine what type of mold is present. Lab analysis can cost an additional $40 to $70.

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To note:United States Environmental Protection Agencydoes not endorse any household mold test kit brand. Instead, homeowners should have their home professionally inspected if they are concerned about the presence of mold. So use these DIY kits with a pinch of salt: they can be helpful in confirming suspicions if you’re on the fence about whether or not you have mold. Of course, if the symptoms are obvious and severe, it’s best to call a professional to check for mold and remove colonies from your home.

ToolsMold tester Painter’s tape Electrical tape Marker or magic penWe participate in the Amazon Services LLC Affiliate Program, an affiliate advertising program designed to enable us to earn fees by linking to and affiliate websites.


Close the windows and doors of the room you are going to test 24 hours before performing the test. This allows mold spores to congregate unaffected by drafts.

How to Test for Mold Using a Viable Mold Test



Remove the contents of the kit from the packaging. Typically, you will find at least one shallow plastic or glass petri dish with a lid and label. The inside of the petri dish has been treated with a substance called a “microbiological culture” which promotes the growth of mold spores. This will help you collect enough samples when testing for mold within the manufacturer’s recommended time frame.


Remove the lid from the Petri dish and place the dish (open end up) on a flat surface at table height.

Let the Petri dish sit for about 48 hours. This time may vary slightly depending on the manufacturer’s instructions. During this time, limit traffic in the room during the test if possible to avoid disturbing the atmosphere. Cover doors with a strip of tape, if necessary, to remind family members and guests that the area is temporarily off limits.


Return the lid to the petri dish after the waiting time has elapsed and apply a layer of tape around the seam where the lid contacts the dish. Masking tape or electrical tape works well, but avoid using hard-to-remove tape, such as duct tape.


Write today’s date on the label provided with the kit and stick it to the bottom of the Petri dish.


Place the saved Petri dish in a dark place, such as a dresser drawer or on a dresser shelf.


Check the petri dish for two days for signs of mold growth in the dish. If mold is present, it will look like the mold you see growing on old food in the refrigerator.

  • If the petri dish shows no signs of mold,
  • Bring it back in the dark and check it daily. If your mold test results are negative after a total of five days (from the date on the label), you can throw the disc in the trash – the kit does not detect mold in the room.
  • If there is mold in the dish,
  • you can send the Petri dish to a laboratory recommended by the manufacturer to determine the type and course of treatment. Many kits include an envelope for mailing. You will also need to submit the payment for analysis.


Wait three to eight weeks to receive your results. In the meantime, you may want to continue checking your home for mold. Although mold testing can tell you if mold spores are present in a particular room, you will need to use an additional kit if you want to test other rooms in your home. .

How to Test for Mold



Although there are thousands of species of mold, most homeowners worryStachybotrys chartarum, commonly referred to as “toxic mold” or “black mold”. This species of mold is actually quite rare, but it is one of many molds that produce high levels of mycotoxins (hazardous mold-causing chemicals) that can create an unsafe home environment. That said, any kind of mold can becomeHealth hazardsif allowed to grow out of control. To be on the safe side, any mold growth identified by a viable mold test should be contained and eliminated quickly.

Delay and anyone can be exposed to air contaminated with mold spores. The risk of health problems increases forknown allergy sufferers, a weakened immune system and respiratory disorders, such as asthma. Symptoms associated with mold include:

  • Chronic cough or wheezing
  • Shortness of breath
  • sneeze often
  • Irritated or itchy skin
  • To cry
  • Runny nose
  • Chronic headaches
  • Dermatitis
  • chronic fatigue
  • Memory loss and trouble concentrating (linked to toxic molds)

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Popular questions about how to test my home for mold

how to test my home for mold?

A quick test for mold can be done when you dip a swab in diluted bleach (1 part bleach, 16 parts water) and dab it on the wall. If the spot quickly lightens (or keeps coming back after cleaning), assume it’s mold.

How do you detect mold in a house?

A common way to check for mold is to smell for it. A “musty” smell in an area of your home is often an indicator that there is some kind of mold present. Symptoms like a persistent runny nose, watery eyes, sneezing and throat irritation could also be indicative of mold.

How do you test for mold in the air?

When testing the air for mold, the best option is typically an air pump that collects samples for evaluation in a laboratory. However, some mold test kits use collection film or petri dishes exposed to the air as a means of testing for mold.

How can you tell if you have mold behind drywall?

Five most common signs
  1. Odor – you smell something but just can’t see anything.
  2. You don’t feel good when your home and you feel better when your away.
  3. Constantly itchy nose, red eyes and sneezing.
  4. Staining on interior wall and base molding.
  5. Wall appears to be wet and damp.

Is there a device that can detect mold?

Yes, it’s called the “Informant or the Informant Plus Black Mold & Fungal Allergen Detection Test Kit“. These devices developed and manufactured by Advnt Biotechnologies, are simple-to-use tests that detects very specific species of mold in 15 minutes or less.

How do you find out if mold is making you sick?

If you suspect that you or someone else has been exposed to mold, call your doctor immediately. The symptoms of mold exposure can mimic allergic reactions, include coughing, wheezing, shortness of breath, chest tightness, nausea, vomiting, diarrhea, headaches, fatigue, skin rashes, eye irritation, and nosebleeds.

Do air purifiers help with mold?

An air purifier can also help in common places for mold in the home like a basement. Though an air purifier can help long term for mold spores in the air, only physically cleaning up the mold and removing the moisture that allowed it to grow will solve a visible mold growth problem.

How do I know if the mold in my house is toxic?

Toxic mold can also have a grayish, soot-like texture, or a slimy, wet surface. In some cases, you may even notice furry orange or brown spots. If you find mold with any of these qualities in your home, don’t get too close, and call a professional right away.

Are home mold test kits accurate?

– Do-it-yourself mold test kits often cause people to make uninformed decisions. The levels of spores that are analyzed by the lab are not accurate and they cannot detect hidden mold, so the homeowner cannot properly assess the situation. People often do either too little or too much based on these results.

Do most houses have mold?

Every house, every environment has mold spores.” It becomes an issue when the concentration of mold spores in a home is greater than what is found outside.

Does home insurance cover mold?

Key Takeaways. Mold coverage isn’t guaranteed by your homeowners insurance policy. Typically, mold damage is only covered if it’s related to a covered peril. Mold damage caused by flooding would need to be covered by a separate flood insurance policy.

How do you check for mold behind walls?

What does mold poisoning feel like?

Each person’s body is affected by mold toxicity in different ways. Some experience constant migraines and headaches, shortness of breath, brain fog, fatigue or even depression. Since symptoms differ from person to person, they may not be quickly associated with mold exposure.

What does mold sickness feel like?

Symptoms of mold exposure may include headache, sore throat, runny nose, coughing, sneezing, watery eyes and fatigue. In those with asthma, asthma attacks can occur. In those with impaired immune systems, serious infection can occur.

Does Dyson purifier remove mold?

Dyson air purifiers and fans can’t remove active mold growths, but the filters do remove airborne mold spores. This improves your air quality and may reduce the chances of mold growing in your home. Mold is trapped in the filter, so it no longer circulates freely in the air. Keep reading to learn more.

Video tutorials about how to test my home for mold

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Should I test for mold? The answer is maybe, maybe not.

First, there are two types of mold testing: a swab or tape test vs. the air sample test. A swab test is where you collect a sample from visible mold to test it. The air sample test compares the levels of airborn mold between the inside and outside of your home. If the levels are much higher inside, then you have a mold issue.

So should you test? Well if you can see mold, there’s no need to test unless you need to know what type of mold it is. Just get rid of the mold! That said, there are 4 potential reasons you could want to test for mold:

1) Allergic to a specific mold species. The type of mold could be good information to know.

2) Maybe you live in a house that is clean and you can’t see or smell mold but someone is sensitive to mold.

3) Feel sick when at home, but fine at work.

4) Home inspector sees something which looks like mold.



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