How to identify the source of mold?

Author: Waylon Luettgen  |  Last update: Saturday, January 10, 2026

Mold can grow anywhere there is adequate moisture or a water problem. The best way to find mold is to look for signs of mold growth, water staining, warping, or to follow your nose to the source of the odor. It may be necessary to look behind and underneath surfaces, such as carpets, wallpaper, cabinets, and walls.

How to figure out where mold is coming from?

Look for Visual Signs of Moisture

If you have plumbing leaks or water damage, mold is sure to follow. Beyond looking for the obvious, like dripping pipes, also check for bubbling paint, ceiling water stains, damp basement walls and discolored patches on walls, ceilings and floors.

How would you identify an unknown mold?

Visible mold, moldy or musty odor, water damage as well general dampness and moisture are all good indicators for moldy conditions of an indoor environment. A mold inspection will typically take the combination of those factors into account and support the evidence through mold testing.

Is there a device that detects mold?

Mold Detection

In the same way that smoke detectors identify smoke, not fire, the Biomatrix Mold Monitor identifies unseen moisture that can lead to widespread mold growth.

How to test for mold in air in a house?

The two most common methods used to identify a mold problem are mold test kits or air testing sensors. These kits include the necessary air test devices, chemical strips, or Petri dishes and are available at department stores or online. They'll also come with an instruction manual for any brand-specific guidelines.

Early Stage Mould Inspection Tips from a Mold Inspector

How to test for mold in your house?

To test for mould in the air at home, you can use DIY mould testing kits available in stores or online. These kits often include petri dishes filled with a growth medium. You'd expose the dish to the air for a set period, and then cover and allow it to incubate for a specific time.

What are signs of mold sickness?

Although symptoms can vary, the most common symptoms seen in people exposed to mold indoors include:
  • Nasal and sinus congestion.
  • Eye irritation, such as itchy, red, watery eyes.
  • Wheezing and difficulty breathing.
  • Cough.
  • Throat irritation.
  • Skin irritation, such as a rash.
  • Headache.

Can I do a mold test myself?

Mold testing kits are available at most home improvement stores or online retailers, although not all tests are the same. There are some kits that only test for the presence of mold on surfaces, while others collect or grow samples of the mold that may be in your home.

Do air purifiers detect mold?

Furthermore, mold can grow and spread quickly, and air purifiers are unable to stop its growth since they lack detection capabilities. Therefore, the most effective air purifiers may be able to reduce the amount of mold spores floating in your home, but they won't eliminate them entirely.

Is there an app that identifies mold in a house?

Mold Finder AI makes mold inspection fast, easy, and reliable. Whether you're concerned about black mold or any other mold issue, our advanced AI technology will help you detect and analyze mold in seconds. Simply snap a photo or upload one from your gallery, and Mold Finder AI will do the rest!

Can mold behind walls make you sick?

It irritates the nose and throat, which can lead to both sneezing and coughing as your body tries to get rid of the irritant. Inhaling mold spores can also trigger coughing in people with allergies or an asthma attack, for those with asthma.

How do I permanently get rid of mold in my house?

Spray the area with a mixture of water and vinegar - half water, half vinegar. Next, scrub to remove all traces of the mold. For removal of black and white mold, spray the area with the half water and half vinegar solution.

Does homeowners insurance cover mold?

Homeowners insurance doesn't usually cover mold damage or removal unless it's the result of a covered peril. If the mold in your residence was caused by something sudden or accidental, such as a bursting pipe or some other covered incident on your policy, you may be protected.

How to tell if mold is behind drywall?

Musty Smell

If you think there's mold in your walls, get on your hands and knees and smell the electrical outlets. This might sound silly, but it may help you sense mold if it's growing within walls. Outlets have better access to the area behind the walls. Thus, smelling them can help identify the mold problem.

How to locate mildew source?

If you suspect the mildew smell is coming from your kitchen, try checking for leaks and damp patches, as well as any mouldy food items on the floor, in the fridge, and in the cupboards.

What does harmless black mold look like?

Although the name implies a uniform coloring, black mold may appear black, dark green, or dark brown. It typically grows as a cluster of round spots with a distinctly wet, slimy appearance. As stated, black mold typically appears fuzzy or furry.

How to detox from mold?

To remove mold from your system, focus on strengthening your detox pathways. This includes taking supplements like glutathione, consuming antioxidant-rich foods, staying hydrated, and supporting gut health with probiotics. For more severe cases, consult a healthcare professional for personalized treatments.

How to test the air in your house for mold?

To test for mold in your home, you need to have a mold-testing kit. Testing kits are affordable and widely available in most home-improvement stores and online e-commerce websites. Once you determine that you have mold, you should call a professional mold company such as IBBOTSON Heating & Air Conditioning Co.

Will a dehumidifier help with mold?

Mould will easily grow and spread if the right conditions are present. So, dehumidifiers don't kill mould, but they can help to prevent it from growing inside your home by reducing humidity. However, the best way to deal with it is to get rid of its source.

What are the symptoms of mold sickness?

Symptoms
  • Sneezing.
  • Runny or stuffy nose.
  • Cough and postnasal drip.
  • Itchy eyes, nose and throat.
  • Watery eyes.
  • Dry, scaly skin.

What does black mold smell like?

Toxic black mold growth has a more potent and identifiable smell, like the smell of decay, wet soil, or rot. Visually, it may be greenish-black, grayish-black, slimy, or more furry than other forms of mold or mildew.

How to tell if your house is toxic?

If you suspect your asthma worsens or is more severe than usual, contact your doctor or medical professional.
  1. Bad Smells In The Home. When there's a bad smell in the home, you can tell. ...
  2. Peeling Wallpaper. ...
  3. Spots On The Wall. ...
  4. Bad Allergies Won't Go Away. ...
  5. Visible Mold Growth. ...
  6. Past Water Damage.

What happens if you breathe in mold for a long time?

Chronic Fatigue: Mold forces your body to work harder, leading to persistent fatigue, especially in those with pre-existing conditions. Lung Issues: Prolonged exposure can cause lasting damage to lung function.

What does a mold cough sound like?

The cough is typically dry and non-productive, meaning it doesn't bring up mucus. It is sometimes described as having a "barking" or "hacking" sound.

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