Understanding And Removing Mold Growth On Your Exterior Siding

From the basic financial responsibilities of making a real estate investment to the overwhelming amount of cleaning and maintenance, it is easy to see the challenges of owning a house. Fortunately, with proper upkeep, your home can be a worthwhile investment. However, you may not understand the importance of maintaining your home's exterior siding.

Rain and other moisture can quickly build up on, under, and in between your vinyl siding. This excess moisture can lead to the growth of mold and mildew. This growth is not only unattractive, but it can lead to extensive damage to your home's siding and underlying construction. Using this guide, you will understand the dangers of mold and learn how to remove it safely from your home's exterior.

Danger of Mold Growth

If you see dark green, brown, and black patches on your home's siding, it is most likely mold and mildew. Initially, the unappealing look of this growth will alarm you, but you should worry more about the possibility of underlying damage to your siding due to the buildup of moisture.

In most cases, the moisture will have penetrated not only the siding but also the underlying wood used to construct your home. If the mold is left on your home's exterior, the wood and siding will begin to rot and warp.

Mold is also dangerous to your health. Inhaling mold spores can affect your respiratory system, reducing your ability to breathe. Also, spores may irritate your eyes and skin, increasing your risk of allergic reactions and rashes. Contact with mold may cause the following symptoms:

  • Sneezing
  • Coughing
  • Itchy/Watery Eyes
  • Itchy Skin/Rash
  • Runny Nose

Due to the dangers to your home and your health, removing the mold from your home's exterior is imperative.

Removing Mold

Using a pressure washer and cleaning solution on your home is the most efficient way to remove larger areas of mold and mildew. Before working on the mold, make sure to protect yourself from contact with the mold.

Wear long rubber gloves, safety goggles, and a disposable respirator mask. This will protect your skin, eyes, mouth, and nose from contact with the mold.

To ensure your home is clean and free of this dangerous growth, add the following to an outdoor pump sprayer:

  • 2 gallons of water
  • 1 cup of bleach

Shake the container to mix the ingredients. Stand a few feet away from your home and rinse the siding off with your pressure washer. Then, spray the bleach solution onto the damp exterior. Allow the solution to sit and soak for a few minutes before rinsing it away using your pressure washer.

Scrub stubborn patches of mold with a soft-bristled brush. Then, rinse off with your pressure washer.

Bleach effectively removes mold, mildew, and algae, but it can also damage any landscaping that surrounds your home. If you prefer a more natural, less toxic ingredient to remove mold from your siding, consider using white vinegar.

White vinegar contains acidic properties that are naturally antibacterial and antiviral. While it is strong enough to kill the dangerous growth of mold and mildew, it is gentle enough to use around your flowers, shrubs, trees, and grass.

To wash your home's siding while killing mold and mildew, add the following to a pump sprayer:

  • 2 gallons of water
  • 2 gallons of white vinegar

Shake to mix and then spray a generous amount of the solution onto your siding. Allow to sit a few minutes before rinsing with your pressure washer.

The growth of mold on the exterior can damage the siding and underlying wood while also decreasing your home's appeal and value. With this guide, you will understand how mold affects your home and your health and learn how to safely remove it from your siding. You can also click here for info on your home's siding.


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