How Does Water Damage Cause Mold?

How does water damage cause mold is a common question among home buyers and aspiring property owners. To understand the answer, you have to understand how mold behaves and the different conditions it thrives on. The connection between water damage and mold is humidity. When you have leaks in any part of your property, the moisture can spread easily, speeding up the mold growth. However, spores that cause mold are usually found outside. They can come into your house through open windows or doors, then land on any surface. If they find enough humidity, they thrive and multiply, resulting in a mold problem that could lead to health complications.

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Does Water Damage Always Cause Mold?

No matter how slight or minimal it may be, any water damage can result in a mold problem that costs you a lot of money to get rid of. You may need to contact a water damage remediation expert. Spores of mold don’t usually take a long time to grow. The slightest moisture is enough to speed their growth and multiplication. You have to pay attention to signs of water leaks such as discoloration on walls, stains on walls and ceilings, and bubbling of paint. Any change in your walls or ceiling’s normal appearance should be checked to ensure a water leak isn’t causing it.

How Long Does It Take Mold To Form After Water Damage?

Mold is a type of fungus that is easily spread around as it is present in the air. It consumes organic matter and spread by releasing spores into the air. The spores reproduce and release more spores, leading to the fast spread of mold, especially high humidity. The ability of MD to ingest organic matters allows it to survive on any surface. Whether they land on floors, carpets, ceilings, or tiles, mold can thrive. It only takes between 24 to 48 hours for the mold to grow and release spread, which means that within 48 hours, you can have a bigger mold problem if you don’t handle it well. Since the spores attach to people’s clothes, shoes, furniture, and even pets, it’s easy for them to get into your home and difficult to remove the mold.

What Kind Of Mold Does Water Damage Cause?

Although mold is a fungus, you still need to know the exact types you’re dealing with if you want to successfully get rid of them. There are three classifications of the mold, but there are 12 mold types under the three categories. The three categories of dangerous mold include:

Toxigenic Mold

Often referred to as toxic mold, these produce harmful substances that can cause serious health issues and even death.

Allergenic Mold

These types of molds cause serious allergic reactions such as itchiness, sneezing, and sometimes rashes.

Pathogenic Mold

These are the most harmful as they can easily cause death.
Other types of mold you may come across include:


This falls under the Toxigenic category, and it changes its appearance over time. It begins as a small mold that is gray, pink, orange, or yellow in color; then, it changes into a powdery substance. The mold is also most likely to grow around house appliances like humidifiers, window sealants, drain pans, and cooling coils. This type of mold’s toxic nature means that it can affect your internal organs and your bone marrow if you become exposed.


This is an allergenic mold that has a green or dark brown color when it grows. It is mostly found in areas where there is constant water use, such as kitchen sinks, bathroom walls, and showers. It is also likely to grow in your house of you have had previous water damage. It mostly attacks the respiratory system and may cause symptoms like an itchy nose and dry mouth.


This type of mold is formed in layers that look like walls. It is also an allergenic mold, but it can also become toxic if it grows in specific conditions.


This is another type of mold that changes its color with time. It starts as white, but turns to Grey, then brown, then black as time passes. It mostly grows in damp areas such as basements, sinks, or ceilings that have leaking roofs. It can produce mycotoxins that can be deadly to people with compromised immunity.


You can find this type of mold on wooden surfaces or under wallpaper. It can be pink, black, or brown, especially as it gets older. It mostly causes reactions on the nails, eyes, and skin, and can cause serious skin condition if it comes in direct contact with the skin.


This is an allergenic mold, but it can grow in warm and cold conditions. It likes softer surfaces and is most likely to grow in carpets and upholsteries. You may also find it in dark spaces such as under cardboards and floorboards. It is brown or olive-brown and can cause reactions to the eyes, throat, skin, and nose.
Other types of mold include:

  • Fusarium
  • Mucor
  • Penicillin
  • Stachybotrys
  • Trichoderma
  • Ulocladium

How To Get Rid of Water Damage and Mold In Your House?

It’s always advisable that you call a professional to remove the mold for you. ServiceMaster Fire & Water Restoration Services will start by locating the area where the mold is growing and removing all the materials you can’t clean. Check all areas of the house, including the basement and the drywall. Make sure you have gloves on, as well as goggles and a mask.

Next, dry out the area to make it less conducive for mold to grow in. Seal off vents, doors, and other airways prevent the spores from escaping to other areas when they become airborne. You can allow air to flow in but seal off all outflows. Clean all the materials you can salvage thoroughly with soap and water. You can also use a suitable fungicide to prevent a recurrence. Finish by repairing all the sources of water damage by sealing off all the leaks.

After removing all the mold, you have to make sure you ventilate your home or office properly to avoid similar problems in the future. Keep your house dry and warm, and inspect your surfaces regularly.