What Causes Green Mold On Vinyl Siding

Even though vinyl is extremely hardy and durable as an exterior siding for your home mildew will form on it in areas that are in the shade or where the vinyl is exposed to moisture on an ongoing basis.

What causes green mold on vinyl siding.

Oftentimes homeowners find that mold grows on their siding where there s shade covering the home or where sunlight is limited. Overtime dirt will collect on the exterior of your home and is an excellent food source for mold and mildew. The photo at above left shows green algae on vinyl siding. Stucco is a cement mixture that includes water which attracts mold.

However while the polymer material may be able to withstand high winds and harsh uv rays it is still susceptible to staining including a green discoloration caused by one of the following. It too can attract mold just as stone does in the woods. When house siding begins to turn green it diminishes the exterior appearance of the home. Fortunately siding can be cleaned to remove not only green stains but other dirt and stains that may be taking over the homes exterior.

You may have an issue with your gutters. To prevent the development of mold or mildew on the exterior of your vinyl it is important that you understand why and where it is likely to grow. One of the main reasons someone might see mildew or mold on vinyl siding is that dirt has accumulated. However there are some very common causes of moldy siding that homeowners can face.

Green stains on siding are usually the result of mold mildew algae or moss. It is actually airborne algae that can cause long term damage to the surface. If vinyl shows green discoloration or staining typically one of two things is responsible. Algae may appear green or brown and will stay damp on your siding.

Algae may also look black or brown as may some molds. Click to enlarge any image small gray or darker round spots on siding that are about 1 16 in individual diameter particularly if the spots are slightly raised may be artillery fungus a mold spore. Mildew forms best in shady moist areas. Dirt is one of the leading causes of mold and mildew growing on vinyl siding.

Since it was first introduced in the late 1950 s vinyl siding has gained popularity due to its versatility strength and ability to weather the elements. Stone is known by a number of names including rock siding stone veneer and stone facade. You might notice that the northern side of your home is where you experience the most mold mildew build up on your siding. The green stuff on your siding is more than an eyesore.

In this post we cover what this green stuff is how it got there where it is typically found on a home and how to remove it. While it is not uncommon to see homes with an accumulation of green stuff it is important to take care of it in a timely fashion. Why does mildew grow on vinyl siding. These stains occur naturally over time.

Vinyl is the easiest surface to clean and maintain but it too can become moldy.