How to Pressure Wash a House

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You may spend time cleaning the inside of the house every day, such as doing dishes, keeping up on laundry, and dusting the surfaces. But what about your home’s exterior?

Houses might become quite dirty as a result of weather factors, mud, or your children playing with chalk or water balloons.

A pressure washer is the finest technique to clean the outside of your house. This does the task fast and effectively. I’ll teach you how to pressure wash a house so you’re prepared.

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Is Power Washing Harmful to Your Home?

Before you get out of your pressure washer, there are a few things you should be aware of. You might damage your property if you don’t pressure wash correctly and safely.

For starters, if the pressure washer is excessively powerful and has a high PSI (more than 1500), you risk damaging or splitting your home’s siding.

Water damage is another major concern. Water may readily enter the walls of some dwellings, particularly those built of wood or brick. If the water does not evaporate quickly enough, it will create rot and moisture buildup.

Finally, because you’re spraying the water upwards, you run the danger of allowing moisture into your attic.

If you’re not sure, a garden hose and some soap are an efficient way to clean your house, even if it takes a little longer.

However, taking the necessary safeguards and measures ensures that pressure washing is still a good idea!

What You Should Do Before You Begin Pressure Washing Your Home

Before you begin pressure cleaning, you should perform the following:

Put on your safety gear.

Furniture should be removed or covered. Include plants, bushes, and floors as well.

Air vents should be covered.

Avoid needing ladders. They are not required, and if you use them, you are putting your life in danger since the side of your house will be slippery, and you should not use power tools while on a ladder.

Check that the extension hose you’re needing isn’t too lengthy and might come into touch with any electricity lines.

Make sure the space surrounding you is clear. Remove any required furniture, power tools, motorcycles, and other items. You should also make certain that no children or pets are present.

Check to see if your home was painted with lead-based paint. If this is the case, you should have a professional remove it before you begin pressure cleaning.

If you suspect or know your home has asbestos, have it tested by a professional. If you have asbestos, you run the risk of upsetting it with your pressure washer, which may be dangerous.

Turn off all outside electrical outlets and appliances. If you spray them by mistake, you risk damaging your home’s electrical system or igniting a fare.

What You’ll Need to Power Wash a House

So you want to power wash your house. Let’s start by gathering the necessary items. This includes the following:

Pressure washer detergent: You will need detergent to clean your house since it will make the job simpler and faster. Also, choose a detergent designed particularly for your home’s siding, whether it’s vinyl, cement, stucco, or anything else. I also advocate needing an eco-friendly solution to avoid harming neighboring grass, wildlife, and floors.

Pressure Washer: You will, of course, require a pressure washer, but not just any pressure washer. I recommend going with one that has 2.3 GPM, which means the pressure washer will be fairly powerful — approximately 2,600 PSI. If this is the case, well need to stand very far back when pressure washing to avoid harming the siding of the house. If in doubt, go with a loIr PSI, between 1200 and 1600, for softer siding like wood or aluminum. Vinyl and other tough surfaces may withstand greater PSI levels. You should also ensure that it includes a soap tank so that you can store the detergent.

Attachments: I recommend purchasing a brush attachment since it makes cleaning houses simpler, especially when it comes to eliminating build-up and dirt. You might also want an extension wand for extra versatility.

The Right Nozzle: When washing a home, use a 25 or 40-degree nozzle tip for a broader jet of water. This allows you to cover more of the home siding at once and avoid damage.

Wearing protective eyeWear and strong, robust clothes, rather than light, loose clothing, is recommended.

Plastic Sheeting: To minimize water damage, cover air vents with plastic sheeting. You should also cover any surrounding furniture, plants, and floors to protect them.

How to Power Wash a House

Now that you’re ready, it’s time to get started. Before you begin, avoid doing this on a particularly sunny day since direct sunshine might dry up the cleaning solution, making it difficult to rinse.


If you have a long-handled brush, start by cleaning the siding of the home to eliminate surface-level dirt.

The siding of the home should next be rinsed with a normal garden house, going from the top down. If you don’t have a garden hose, use your pressure washer with a broad spray angle and low pressure while standing far back.

Allow the siding to cure before proceeding to the next step.

You may wish to do this step one day and the remainder of the steps the next.

Fill Pressure Washer

Follow the manufacturer’s ratio recommendations when adding pressure washer detergent to your pressure washer.

Before you begin, test in an inconspicuous location to confirm that your chosen settings are safe for your house.


Now you may begin spraying the siding. To avoid soap running over dry patches, start at the bottom and work your way up.

While spraying, move-in horizontal steps along with the house, gradually going upwards but retaining a downward angle where practicable. As you go up the siding, this will become difficult.

After applying the detergent, allow it to remain for 10 minutes before washing it off. This enables it to effectively remove any mold, mildew, or dirt accumulation.


You may now rinse the detergent off after it has rested for at least 10 minutes in all parts of the house. To achieve this, you should use plain water in your pressure washer.

Instead of working from the bottom up, this time you’ll work from the top down to thoroughly rinse away all of the soap. This also prevents filthy water from flowing over clean siding sections.

To ensure that all of the detergents is washed away, you may want to move closer or use a higher pressure setting for this part.

If you detect any damage, take a step back and use a broader spray nozzle.


Allow the siding to completely cure before doing anything else to the side of your house, such as painting. This might take up to 48 hours, but if you’re going to paint, I recommend waiting at least a week.

Dust and insects might rapidly return, therefore you should use a yard hose to cleanse your residence more often. However, pressure washing should only be necessary every few years.

Frequently Asked Questions

More On Cleaning Outside the House

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You can also grab a copy of my cleaning planner, The Get It Clean Cleaning Planner here on the site. It’s packed full of extremely practical tips and tricks and checklists that can help you get your house clean, and keep it clean once and for all.

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