How to Remove Mildew from Vinyl Siding Without Scrubbing?

Cleaning the outside of your home and preventing mildew on the outside makes it look better and helps increase the life of your home’s materials. The plastic nature of vinyl siding, which retains moisture and other organic matter, can easily make it one of the best places to cultivate mildew. This blog is, therefore, reassuringly simple as it covers a step-by-step guide on how homeowners can get mildew off their vinyl siding in an effective way without laborious scrubbing. At JD Power Washing, we understand how important it is to keep your house looking good fast and effortless. Let us walk you through just how to do that.

Understanding Mildew Growth on Vinyl Siding

Mildew is a fungus that grows in wet, warm environments and spreads rapidly on outdoor surfaces such as vinyl sidings. It usually appears in patches of black or gray color and multiplies widely if not controlled. How to adequately address mildew will prevent it from causing permanent stains or damage to your siding.

Causes of Mildew on Vinyl Siding

The high-humidity conditions highly cause mildew on vinyl siding, availability of different organic substances, and sunlight blockage. The places where the outside of your home stays in the shade and cannot remain dry for long are particularly favorable to mildew.

Effective Mildew Removal Techniques

Removing mildew from your vinyl siding without scrubbing involves using the right cleaning solutions and techniques that do the work for you. Here’s how you can achieve a clean, mildew-free exterior:

Choose the Right Cleaning Solution

Homemade Solutions
  • Vinegar Solution: Mix 70% water and 30% white vinegar. This natural solution is effective against mildew without damaging the siding.
  • Oxygen Bleach Solution: Oxygen bleach (not chlorine bleach) can be used for tougher mildew stains. Mix according to the manufacturer’s instructions.
Commercial Cleaners

Opt for commercial cleaners specifically designed for vinyl siding that state their efficacy in removing mold and mildew. These products often require no scrubbing and do not damage the siding.

Apply the Solution with a Pressure Washer

Using a pressure washer to apply your chosen cleaning solution can significantly enhance the mildew removal process without the need for physical scrubbing. Here’s how to do it:

  • Prepare the Washer: Set your pressure washer to a low to medium setting to prevent damage to the siding.
  • Apply the Cleaner: Use the pressure washer to evenly distribute the cleaning solution over the siding. Start from the bottom and work your way up to prevent streaking.
  • Let It Sit: Allow the solution to sit on the surface for 10 to 15 minutes. The cleaning agents will break down the mildew during this time.

Rinse Thoroughly

After this solution has been allowed to do its job, rinse thoroughly using clean water from the pressure washer. Begin at the top and work down to ensure all cleaning solutions and loosened mildew are washed down the face of the siding.

Additional Tips for Preventing Mildew Growth

The surest way to decrease the number and seriousness of cleanings is to avert mildew from building up on your vinyl siding:

Maintain Proper Ventilation

Ensure your home has adequate airflow on all aspects of your siding so it can remain dry and less habitable for mildew growth.

Clean Periodically

The act of cleaning as a routine matter, even with water alone, is sufficient to prevent the accumulation of organic materials feeding growth in the mildew.

Trim Overhanging Branches

Cut back shrubs and trees so the sun can shine directly on the vinyl, keeping it dry and out of the shade as much as possible.


Mildew removal from vinyl siding doesn’t have to be a laborious effort that may take hours just standing and scrubbing. Correctly performed, your siding will be cleaned and remain fresh without much physical exertion. For those who would like to seek professional help or those with more severe problems, JD Power Washing provides expert cleaning services that will make your home exterior impeccably maintained. Visit us online at JD Power Washing, and take a moment to learn more about our services and how we can help you maintain a pristine home exterior.


Indeed, mold on the vinyl siding can be eliminated without a brush by utilizing perfect cleaning solutions and a pressure washer.

Homemade vinegar solution (30% white vinegar and 70% water) and a solution of oxygen bleach are also suitable for cleaning mildew. Alternatively, commercial good preparation can be bought for cleaning vinyl siding to remove mildew.

Apply the cleaning solution to the surface with a pressure washer, working from the bottom to the top to avoid streaking.

How do I safely apply Murphy Oil Soap to my vinyl siding?

In sections of the carpet, apply the diluted solution and gently rub the surface using a soft brush or sponge.

Let the solution contact the siding for around 10-15 minutes to break down the mildew before rinsing.

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