Best Pressure Washer Soap For Cars, Vinyl Siding and Bricks

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Are you looking for the best pressure washer soap for cleaning your home? We’ve got a list that’ll appeal to you. Check it out to know which ones to buy.

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When pressure washing your car, patio, or your house, you need to have a soap or detergent ready. After a while, thick debris or dirt may stick to your home’s walls or your car doors. While a pressure washer has the power to loosen the dirt, it may take more than just water to fully wash the dirt away.

In order to completely clean your home or car, you need to use soap and water. Even the best gas pressure washer with soap tank won’t work optimally unless there’s soap inside.

But the question is, which pressure washer soap should you buy?

There are so many brands and so many types out there for you to choose. Picking out the right one can be pretty difficult.

That’s why we decided to make things easier by providing you with a short guide that will help you determine which products you should put your attention into. This will allow you to narrow your choices to the best pressure washer soap out of the list we’ve laid out.

Let’s check them out!

The Comparison Table

Before we go into details, let me introduce the products first. This’ll give you an idea of how we pick these products based on application. Later on, we’ll go to the specifics of each product.

But first, take a look at the table below:



Best Use For...


Karcher Multi Purpose Detergent

Karcher Multi Purpose Detergent

Concrete, brick, and cement

Briggs and Stratton Pressure Washer Detergent

Briggs and Stratton Pressure Washer Detergent

Wood and vinyl siding

Sun Joe Premium Pressure Washer Soap

Sun Joe Premium Pressure Washer Soap

Vehicle material and various other materials

Krud Kutter Green Pressure Washer

Krud Kutter Green Pressure Washer

Home walls, vinyl siding, and gutters

Sun Joe Heavy Duty Cleaner

Sun Joe Heavy Duty Cleaner

Furniture and vehicles

Simple Green Outdoor Furniture Soap

Simple Green Outdoor Furniture Soap

Any heavy duty cleaning job

How To Choose The Best Pressure Washer Soap For Different Cleaning Applications

Now that you know our top picks for best pressure washer house cleaners, let’s move onto something a little deeper. Even if you know what products you should look out for, picking the best one for your situation is another story.

You see, each soap type has its own use. So, the best pressure washer soap for cars may not necessarily be the best pressure washer soap for house nor is it the best pressure washer soap for brick material.

With that in mind, we believe that you must know how to pick your pressure washer cleaning agents through a concrete list of criteria.

If you don’t have one in mind yet, we’ll give you a list that you can use:

  • Purpose

The first thing that you need to take into consideration is the purpose of the soap. As we’ve reiterated above, you need to buy soap depending on the purpose of application. For instance, if you want to wash your windows, you need to get something that can polish windows.

So far, the best pressure washer soap for windows is the vinegar or ammonia-based soaps. If you want to clean your vinyl sidings, the best pressure washer soap for vinyl siding will probably be the Sodium based types like sodium hydroxide or sodium hypochlorite.

In any case, take a look at the ingredients of the soap and the list of applications it can clean. Usually, you’ll find the applications of the soap on the front package.

  • Safety

When we talk about safety, we refer to how safe the soap is on certain surfaces. Some soaps, especially the bleach-based ones, can damage some objects-- like the exterior of your car. As much as possible, we don’t recommend that you use strong soaps unless really needed. After all, bleach-based soaps are for heavy duty purposes anyway. For regular maintenance cleaning, you can stick with mild ingredients or better yet, natural ingredients.

Another aspect of safety that we need to take into consideration is health related safety. Some soaps may not be good for your pets, children, or family members when inhaled. Some may also be harmful to the skin upon contact. While the milder soaps won’t give you any problems, stronger ones might.

So, if you know you’re going to use a strong soap, prepare the necessary equipment. You’ll need long sleeves, long pants, and a mask. Also, make sure to keep your children and pets away from the vicinity while you use strong soaps.

  • Environmental Impact

It’s no surprise that chemicals can damage the environment when they get into our drains. Unfortunately, most soaps are made out of chemical ingredients that may cause a negative environmental impact. This shouldn’t be a problem if you’re only using a little bit for your cleaning. But if you need to clean your house, you’re going to need more than just a little.

As much as possible, we recommend that you get the soaps that use natural ingredients. Try to get the ones that don’t have ammonia or bleach. Only use the strong, commercial grade soaps if you absolutely have to.

  • Versatility

While most soaps have their own specialties when it comes to application, there are some that are more versatile than others. This means that there are soaps that have more applications. There may be some soaps that specialize in cleaning cars, vinyl siding and brick material all at the same time. As a general rule, we prefer the soaps that have high versatility because it allows us to save money and storage space. That’s why most of the products we picked are multi-purpose ones.

  • Size

The last thing that you need to consider is the size. This refers to the size of the soap container. The size will determine how much soap you can use at a given time. The bigger the size, the more soap you can store and use. The average size for a soap container is around 1 gallon. However, they may come in smaller sizes such as a quart. Just pick the size based on how much you want to use.

The Best Pressure Washer Soap Reviews (With Best Features)

Best Pressure Washer Soap for Specific Brands:

#1 Karcher Multi Purpose Detergent

First on the list is the Karcher Multi-purpose Detergent. This detergent is known for cleaning up dirt quickly. Its formulation focuses on speed and versatility. So aside from quickly washing away debris, it can also be used for various applications. However, it seems to work best for decks, driveways, patios, and backyards.

It’s one of the best soaps for cleaning brick material and concrete. Lastly, it’s highly worth the money because 1 quart of this detergent can give you 5 gallons of soap mixture if you mix it with water.

Karcher Multi Purpose Detergent


Best Features:

  • Good for cleaning driveways and patios
  • Can loosen dirt vert fast
  • Ingredients are all safe and biodegradable

#2 Briggs and Stratton Pressure Washer Detergent

This is one of the best choices of soaps for vinyl siding and home walls. It specializes in washing away thick dirt, as well as mold/mildew. If you happen to see any of those annoying molds growing at the side of your home or maybe somewhere on your porch, whip out this detergent and spray away. It can easily loosen the undesirable substance and do away with it quickly. It is also safe to use on wood since the ingredients are pretty mild.

Briggs and Stratton Pressure Washer Detergent


Best Features:

  • Easily able to break down mold, mildew, and algae
  • Great for vinyl siding and wood material
  • Can wash away stubborn grime
  • check
    Comes in a 1-gallon package

#3 Sun Joe Premium Pressure Washer Soap

We absolutely love this product because it doesn’t leave foul smells like other soaps or detergents do. In fact, this soap comes in three different scents-- pineapple, vanilla, and coconut. If you like pleasant smells, you’ll find this pretty appealing.

If you’re also asking us, “What is the best pressure washer soap for cars?”

We’d probably tell you to pick this one. The ingredients of this product are very mild and safe for metal surfaces. Because of that, the product is great for cleaning the exterior of cars. The product is also pretty versatile, as well as it can be used for other surfaces like brick or vinyl.

Sun Joe Premium Pressure Washer Soap


Best Features:

  • Very mild and safe
  • Comes in three different scents
  • check
    Can produce a lot of foam

So far, we’ve listed soaps that are pretty versatile with application. If you want something a little more specific, we’ve got three products you can choose from. Check them out below.

Best Pressure Washer Soap for Specific Applications:

#1 Krud Kutter Green Pressure Washer

If you’re looking for the best pressure washer gutter cleaner for homes, this can be a pretty good candidate. It specializes in removing mold, mildew, and debris on house walls, sidings, and gutters. This is especially useful if there are grease spots on your home. You can use this for your regular home maintenance.

Krud Kutter Green Pressure Washer


Best Features:

  • Can remove very tough stains
  • Good for cleaning animal feces and grease spots
  • Does not contain petroleum
  • check
    Safe for use on any home material

#2 Sun Joe Heavy Duty Cleaner

For heavy duty jobs like thick debris, stubborn molds, sticky grease, or heavy rust, this is the cleaner you should get. This can be used for pretty much anything that requires heavy-duty cleaning. The best part is that the ingredients are biodegradable, so they’re pretty much safe.

Sun Joe Heavy Duty Cleaner


Best Features:

  • Can take out even the toughest grease spot or stain
  • Able to remove rust
  • Versatile with application

#3 Simple Green Outdoor Furniture Soap

This one is more focused on cleaning patio furniture. It works well on wood, brick, and metal. It is also biodegradable and safe for use. If you don’t want to pressure wash your furniture, you can also use this with a brush or a mop.

Simple Green Outdoor Furniture Soap


Best Features:

  • Very safe and mild ingredients
  • Can be used with a brush
  • check
    Good for wood and safe on metal


And there you have our list of the 6 best pressure washer soap products to buy. If you were to ask us “What is the best pressure washer soap?” though, we probably can’t give you an answer because it will depend on what application you’re looking at.

Rather than asking yourself which of the 6 choices are the best, ask yourself first what you’re going to use the soap for, then make your choice from there. Once you’ve picked out the one you need, bring out the best pressure washer soap gun with the best pressure washer soap dispenser that you have and start cleaning away!

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Mattie Keyes

Hi there! This is Mattie. When I am not making DIY projects for my house, I spend most of my time researching and writing reviews of different products that you can buy online. I am an office worker turn full-time blogger, and I hope to help other homeowners like me on how to improve and reinvent your home using the best ideas and equipment.