4 Best Homemade Pressure Washer Soap

A pressure washer is a very efficient tool for cleaning floors, vehicles, and other exterior surfaces. But they are not inexpensive. However, in the long term, they are a fantastic investment. They work pretty well on their own, but with a pressure washer detergent soap, they perform much better. 

Making your own homemade pressure washer soap will enable you to make long-term financial savings while enhancing the performance of your pressure washer.

For straightforward directions on how to produce car wash soap for pressure washers, please check the list below.

Why Should You Make Your Homemade Pressure Washer Soap?

Some people might think that making their own detergent would be too difficult. For several reasons, making your own pressure washer detergent is still better than buying pre-made soap.


Making your own detergent enables you to save more than store-bought supplies because homemade soaps last longer. Therefore, you could make 5 liters of detergent that could be kept on a shelf in the garage and would be plenty for your next 5 pressure washing occasions.


Many widely available soaps contain ingredients that might cause adverse reactions. Making your own will let you stay away from substances that might irritate your eyes and skin, or even cause a migraine.

It is not worth taking any chances when it comes to your health and possessing substances to which you may be allergic. Using them when flying through the air in a powerful aircraft may have a major impact.


Making your own pressure washer detergent can help you reduce your carbon impact, which is something you should be worried about. Being highly eco-friendly is a good thing because you’ll be using a lot of water, gasoline, or electricity with your pressure washer.


Some companies may not wish to publish all of their components. However, there are occasions when we need to be careful about what our families and children are exposed to. Producing your own detergent gives you complete control over its composition.

4 Best Recipes For Homemade Pressure Washer Soap

General Purpose

4 Best Recipes For Homemade Pressure Washer Soap

It is safe to use this all-purpose cleaner on various surfaces. You may make use of supplies you already have at home. However, I do advise using laundry soaps that do not contain phosphate.

  • Prepare 1 gallon of water, 1/3 cup of powdered phosphate-free washing detergent, 2/3 cup of cleaner, and 1 cup of vinegar (optional)
  • Combine the dry ingredients
  • Add all the liquid to the mixture and stir slowly

This is a fantastic homemade pressure washer detergent to use on items like your patio furniture because it won’t hurt your plants or cause damage. Since it is non-toxic and decomposes in the soil, it is environmentally friendly.


a perfect homemade soap

Despite being one of the toughest building materials available, concrete is nonetheless susceptible to damage. Over time, cracks, spalling, and weaknesses can appear, especially on driveways with a lot of foot and vehicle use. A garden hose’s water pressure is 30 to 80 times lower than that of a power washer.

Using soap in pressure washing may help you thoroughly clean your driveway with much lower water pressure. Follow these steps for a perfect homemade soap:

  • Prepare 3 litres of water, 1.5 cups of borax, 1 cup of liquid dish soap, 1 cup of washing soda, and 1 cup of degreaser (optional). 
  • Combine the borax and washing soda
  • Add water to create a solution
  • Add degreaser and liquid dish soap 

By increasing the amount of chemicals and lowering the amount of water, you may concentrate this solution. Make this detergent outside or in a place with good ventilation or use a mask to avoid the chemical vapours from these materials.


the best method for cleaning a car

The car’s paint may be shielded from abrasive pollutants by using a pressure washer or power washer soap. Additionally, it guarantees less cleaning work, which is helpful for our hectic schedules.

To wash without touching anything, we may simply spray on the soap and let it take care of most of the dirt removal. It’s the best method for cleaning a car without damaging the paint, according to several auto owners on Reddit. You need the best car wash soap for pressure washers to achieve the greatest results.

  • Prepare 1 gallon of water and 12 tbsp of laundry detergent
  • Add the detergent to lukewarm water
  • Mix slowly to avoid creating too many bubbles.

To prevent inflicting any damage, wash your car with low pressure, and then thoroughly rinse it with a water hose to get rid of all the cleaning agents.

Check out this video for another recipe:

Vinyl Siding

washing vinyl siding

By making your own cleaning solutions, you have the chance to create soaps that are specifically meant for washing vinyl siding. These tend to be gentle and will not stain, burn, or scuff the siding surface.

  • Prepare 3 liters of warm water, 1/2 cup of laundry detergent, and 1/2 cup of trisodium phosphate
  • Combine them in a container before spraying with a power washer over the siding

When using soap, I advise keeping the water pressure between 1,300 and 1,600 PSI. By starting out with low pressure, you may familiarize yourself with the pressure washer and determine whether the pressure is sufficient to effectively clean vinyl siding or whether you need to raise the pressure.

Keep in mind that the siding might separate with the slightest rise in pressure. To protect your siding, it is important to reduce the pressure and move carefully.


You now know how to create homemade pressure washer soap. You’ll be happy you did it yourself rather than hiring someone else to do it for you because the entire process should only take a few hours.

If you follow the advice and guidelines I’ve given, you should be able to complete the project in a single day and restore the brand-new appearance to the exterior of your home. Just keep in mind to follow all safety precautions while using a pressure washer to prevent unneeded accidents.

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