Why is my Vinyl Siding Turning Green?

Your siding is turning green because of excess moisture and lack of sunlight. This “green stuff” is usually either mold, mildew, moss or algae. Ever notice why the same side of every house turns green? In Monmouth County, NJ it is usually the north facing side because it receives the least amount of sunlight throughout the day. Don’t worry it is not permanent and can be cleaned, just don’t wait too long or more damage can be done

Vinyl siding is the most popular exterior surface of a house. This is because it is affordable and extremely durable in many environments. It is flexible and can withstand extreme winds when installed correctly. But just like everything in this world, it has some downsides. It is a breeding ground for mold, mildew and algae. So you’re wondering, why is my vinyl siding turning green? There are many possible causes and none of them should be ignored. The fastest and easiest way to remove this green from your vinyl siding is with a soft wash technique of power washing. So let’s talk about what exactly this “green stuff” is and what is causing it.

What is the green stuff on my vinyl siding?

It’s simple, it is most likely either mold, mildew or algae. Even worse, if could be a combination of them all. Each one is just as big of a problem as the next. Ignoring this green growth on your siding will not make it go away and will shorten the lifespan of the siding. Keep reading to learn more about the causes and remedies to this growing problem.

Take a look at the video above to see the cleaning process first hand. Want to learn more about the difference between power washing, pressure washing and soft washing? Check out our previous article.

Mold

Mold is just a scary word and rightfully so. It thrives off of dirt and shady, wet areas. It forms into spores which are basically compiled of little “seeds.” These “seeds” can actually become airborne, which can be inhaled by humans and animals when breathing. The dangerous part of mold is when it begins to grow and spread across a large area. Although many different kinds of mold exist, it can very well be toxic to you and your families health. If left untreated those spores will quickly spread and can even travel inside your home!

Algae

Algae will appear a green or sometimes brown color and will often stay damp when on your siding. It most commonly grows due to dirt and dust which attaches to your siding and promotes the growth of algae. Algae is mostly a cosmetic issue as it is not as dangerous to your health. In most cases it can be removed with some solid elbow grease or hiring a certified power washing service provider. Before deciding which route to take, just imagine using that elbow grease on the vinyl siding below! Yea, no thanks.

Mildew

Although extremely similar to mold. Mildew is often white or grey in color. It is also just as dangerous to the health of you and your family. Therefore, this again should be removed immediately. The longer it stays on a surface, the more time it has to grow and spread. Although mold and mildew can be removed by hand, it will take a considerable amount of work. Just like most things in life, the finally result will also not be as good as a professionals.

What Causes my Siding to Turn Green?

Excess Dirt

Another issue that can be causing the “green stuff” on your siding, is dirt. Dirt can be a real, pain in the…vinyl siding. See what I did there? Dirt is one of the leading causes of mold and mildew growing on vinyl siding. Overtime, dirt will collect on the exterior of your home and is an excellent food source for mold and mildew. So not only does it look filthy, it is literally feeding the “green stuff.” 

Excess Moisture

The next cause of the mold and/or mildew growing on your siding is moisture. Some of the most vulnerable houses are those that frequently collect moisture. The wet climates are a breeding ground for mold and mildew. Most people instantly blame rain for moisture on their vinyl siding. However, a common cause can also be broken pipes or clogged gutters. Clogged gutters will cause water to build up within the gutter and overflow onto the siding. 

Lack of Sunlight

The proper amount of sunlight is extremely important for vinyl siding. Have you ever noticed those houses that only have one side covered in mold or mildew? That is usually caused by a lack of sunlight. If the vinyl siding does not stay dry, mold and mildew will definitely grow. The sun is a natural drying machine. So if part of your house is shaded throughout the day, the sun will not be able to dry any moisture on your siding. This will cause you to need professional power washing more often.

Ever wonder if you really need a professional power washer? This article will break down the difference between hiring a professional or just doing it yourself.

How do I Remove the Green Stuff on my Siding?

Great question, and it has a simple answer. CLEAN IT, and the sooner the better. Like previously stated, if mold, mildew or algae is left untreated it will only grow and get worse. Power Washing is the answer, it is always the answer. If you don’t own a power washer and can not afford to hire a professional, put your gloves on. Use a mix of bleach and water, spray it on and let it sit for at least 10-15 minutes. Then using a soft sponge, scrub away and rinse off. If you do own a power washer please understand that many important techniques are often ignored by do-it-yourselfers. Vinyl siding is delicate and must be cleaned with low pressure and a cleaning detergent. All Clean Exteriors uses a proprietary solution which will quickly and safely remove any of the above mentioned “green stuff” and more. It is environmentally friendly and pet friendly. 

How do I Prevent my Siding From Turning Green

There are multiple options available. You can start by either removing any large trees or bushes which are touching your house or causing an all day shade. Often not a common choice but this will help keep your siding within the sun more often and promote proper drying. Next, regular maintenance of power washing your vinyl siding will remove any current mold or mildew and also help prevent it. Your last option is to build a bubble around your house. This will most definitely prevent that green stuff. Clearly the best option is regular power washing. Take a look at the “6 Benefits of Power Washing” to learn all the benefits. Want more information on the dangers of mold and mildew, check out this article on Poison.org.

The most important part of removing this mold or mildew, is time. This will destroy your siding and cause expensive repairs if left untreated. They can even permanently stain your vinyl siding. So don’t wait any longer, reach out to the industry leading power washing service in Monmouth County via telephone or this form and get a free quote today.

Don’t forget about the discoloration on your roof! Does your roof have green spots or black steaks? That is not just an eye sore, it is shortening the lifespan of your roof.