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It’s the time of year where heat and humidity makes its appearance. Unfortunately, this is a potential recipe for mold and mildew growth on the exterior of your home. Most homeowners are aware of the consequences of these fungi in the home, but the good news is that you can take steps for exterior mold prevention and peace of mind while hot weather settles in.

Here is how you can prevent mold growth on your home’s exterior this year:

Where Does Mold and Mildew Grow?

Mold and mildew are fungi that can grow on the exterior of your vinyl. They are most likely to grow in areas that are blocked away from the sun or in areas that collect excess moisture.

If you have mold on your siding, it will be either grey or white with small black dots.

Regularly Inspect Your Siding

Your exterior siding is one of the largest components of your entire home. This means that regular inspection is required to make sure that mold isn’t growing when you’re not paying attention. Although this is a little inconvenient, it can save you from a lot of headaches and hassle in the long run.

As you inspect your vinyl siding for mold, be sure to check in places such as:

• Surfaces that are covered by shade—such as underneath trees

• Check the siding around areas where tree branches may drip water onto the exterior

• Take a close look at your gutters and make sure they are not leaking water onto your siding

Maintaining Your Gutters

Speaking of gutters, gutter maintenance is one of the keys to preventing mold and mildew on your exterior. Leaky gutters easily drip moisture onto the exterior of your home, while clogged gutters will overflow and push water down the siding.

The best way to prevent your gutters from promoting mold and mildew growth is regular maintenance. Strive to clean your gutters quarterly and remove any debris. Consider installing gutter guards for best protection.

Washing Your Siding

Washing your siding a couple times per year will also help prevent mold and mildew buildup. You can wash the siding by hand with a 70/30 mixture of water, vinegar, and a long-handled bristle brush—which is the most recommended way to wash your siding. You may also mix together one gallon of water mixed with one cup oxygen bleach in a bucket.

Homeowners also have the option to power wash vinyl siding, but ask your manufacturer before taking this approach.

Remove Mold and Mildew Quickly

If you discover mold and mildew on your exterior, it’s important to remove it as quickly as possible. Otherwise, the fungi may spread and cost you a significant amount of time and money to remove. 

Remember to maintain your exterior this season from top to bottom—it’ll keep your home looking beautiful and prevent mold and mildew from ruining your curb appeal.


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