Is it Safe to Pressure Wash Your Siding? (Expert Advice)

February 3, 2022

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Pressure washing is the process of removing mold, dirt, dust, sludge, and mucking off buildings, autos, and concrete surfaces using a high-pressure water spray. The volume dispensed by the pressure washer is measured in gallons and, in some cases, liters per minute.

Is Pressure Washing Bad for Vinyl Siding?

Some vinyl siding manufacturers may advise against using a pressure washer, while others say that as long as only a little amount of pressure is applied, it is an excellent technique to clean vinyl siding. Because pressure washing vinyl siding can be problematic, start with a low-pressure setting of around 1,000 PSI. Adjust the volume as needed. See what our process is for house pressure washing.

power washing services for vinyl siding of house

What is the Best Way to Clean Vinyl Siding?

Vinyl is a popular choice for both residential and commercial properties. Its appeal stems mostly from its low-maintenance and cost-effective characteristics. There are diverse designs to pick from as well. Plus, vinyl siding may last anywhere from 10 to 12 years to a couple of decades with appropriate care. Vinyl siding is quite robust, so it can typically withstand the power exerted by pressure washers. Vinyl siding soft washing is a popular and simple cleaning solution for this material.

The best and easiest approach to clean vinyl siding is a soft wash pressure washer! Soft wash systems begin with specialist detergents designed to dissolve even the roughest, thickest filth and grime safely and effectively. Once dissolved, all that's needed to remove dirt and debris is a low-pressure rinse, often only a little stronger than your home's garden hose.

Soft washing your home's siding not only preserves it but also helps to reduce splashing and splattering! When you pick soft wash pressure washing for your home's siding, you also reduce the chance of breaking exterior window glass, landscape elements, brick chimney exteriors, and other materials.

To clean vinyl siding, begin by spraying it with a bleach-based cleaning solution. Allow for a few minutes for this solution to loosen tough dirt and stains. Then, using a 25-degree nozzle, spray down from top to bottom and left to right in a sweeping motion.

Can Siding Grow Mold?

Mold may develop on practically any surface with moisture, even the bottom of the siding. Mold may be difficult to remove after it has started to develop because disturbing it releases additional spores into the air.

Mold spores, as well as dampness, may penetrate through your siding in a variety of ways. Cracks or rips in the butt joints, for example, provide an ideal gateway for fungus and insects searching for a warm spot to remain. Water and mold spores can also infiltrate your siding through window headers. Using flashing, water flowing from the roof must be directed away from the headers. Water can infiltrate behind the siding if the flashing is broken or not correctly fastened, enabling mold to grow.

washing mold off vinyl siding

How Do you Get Green Algae Off Vinyl Siding?

Getting green algae off your vinyl sliding is important as it can cause structural damage. If not, it is removed promptly. The following tools and materials are used.

  • Bucket
  • Microfiber cloths
  • Small spray bottle
  • Pump pressure sprayer
  • Pole brush with microfiber head
  • Garden hose with spray nozzle
  • Household pressure washer
  • Ladder

Process of Removing Green Algae from Vinyl Siding 

  1. Evaluate the extent of the problem. With a soapy rag and a rinse, muted growth should be removed. A stronger cleaning solution will be required if the growth is thicker.
  2. Mix some cleaning solution in a bucket.
    • Normal soap and water work well for mild levels of growth
    •  A stronger solution made from laundry detergent and water for thicker algae growth.
    • A solution of oxygen bleach for heavy growth. Oxygen bleach is gentler in the environment.
    • Dilute chlorine bleach with water for the heaviest stains use a small quantity and a small sprayer.
  3. Water the grass and plants surrounding your house with the garden hose. The water coating will protect them from the cleaning solution to some extent.
  4. Fill a pump pressure sprayer with a non-toxic cleaning solution to spray cleaner on hard-to-reach areas.
  5. Fill a pump pressure sprayer with a non-toxic cleaning solution to spray cleaner on hard-to-reach areas.
  6. Begin applying the cleaning solution to the vinyl siding to continue learning how to remove green algae. Use a sprayer to ensure that you cover all surfaces. If you're going to use a ladder, be sure it's sturdy.
  7. Use the cloth and pail to apply the solution to the lower portions of the siding. Use a microfiber cloth or a pole brush with a microfiber head to apply the cleaning.
  8. Allow 10 to 15 minutes for the cleaner to sit on the siding.
  9. Begin rinsing at the top and working your way down.
  10. To rinse, use a garden hose spray nozzle or a pressure washer. Heavy layers of algae can be removed with a pressure washer.
  11. If any stubborn algae remain, re-spray.
  12. If required, use a little bleach on the roughest places.
  13. Rinse the area where you have to wash it again.
  14. To remove any cleaning residue, re-spray the grass and plants around the home.
  15. Perform any maintenance procedures required to address the issues generating the algae development.

removing grime from vinyl siding

How Often Should You Clean Vinyl Siding?

Cleaning vinyl siding every two to three years is a decent "rule of thumb." It's not a good idea to go more than a few years without power washing since homes may accumulate a lot of dust and dirt that people ignore, and pressure washing also removes pesky insect nests and termite tunnels.

You'll need to alter this timetable to meet your property and needs, just like any other cleaning and maintenance work.


To homeowners and intending homeowners, it is important to be familiar with the concept of maintenance, as proper maintenance is key to enhancing the life span of your home,

Keeping your sliding clean at all times is an integral part of home maintenance; professionals should be employed to help with this. HomeGuide estimates the quote for pressure washing to about $0.35 to $0.77 per square foot.

For additional information, check out our other blogs. We frequently publish about power washing services. Give our pressure washers a call if you need to schedule services. Our team at Redford Charter Power Washing Pros offers state-of-the-art exterior cleaning for your home.


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