What causes Mold and Mildew on a Home?

You may be asking yourself "How did all of this mold and mildew get on the side of my home?" There are many ways mold and mildew begin to grow in your home. In this blog, I will be discussing how mold and mildew grow on the side of your home. 


Dirt is a food source for mold and mildew growth, it collects on the sides of your home and creates a film of scum on the side of the home. Dirt can also collect sap, pollen, and other food sources for mold and mildew on the sides of your home.

Lack of Sunlight:

Fungi grow in dark and cool places, that is why you often can find mold in your attic and in fridges. Lack of sunlight on your home mixed with dirt and moisture can allow mold and mildew to thrive. An overhang from your home, the underside of a deck, a side of the home that gets more shade or doesn't have the sunlight hit it at all. 


Moisture trapped in wood stuck behind vinyl, water on peeling paint or water dripping from a gutter onto an area can also cause mold and mildew. When water sits on the area of a home it is starting the growth of mold and mildew.  

These are the most common ways of mold and mildew growth, these fungi can grow on vinyl, composite, T1-11, and even brick. The minerals in regular paint also serve as a feeding source for mold and mildew as well. With Rhino Shields Fungi cocktail paired with our APS and DFC, we will help prevent the growth of mold and mildew on your home. 

These are just a few reasons why mold and mildew could be growing in your home, let us know on our social media if you would like to hear more about mold and mildew growth!

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