Pressure washing a house is a great way to spruce up the exterior of your home. Not only does it look great, but it can also help to protect the exterior of your home from the elements.

However, it’s important to know what chemicals to use for pressure washing to ensure your safety and get the best results. In this article, we’ll go over the safety considerations, the best types of cleaners and pre-rinse solutions, and provide some helpful maintenance tips.

Safety Considerations

No matter the job, safety should always be your top priority! When it comes to pressure washing your house, it’s important to follow safety precautions.

Make sure to wear protective clothing like gloves, goggles, and a face mask. Additionally, you should always check the weather report before you begin to make sure there’s no chance of rain. Rain can cause chemicals used for cleaning to be pushed back onto your gutter, siding, and other parts of your house, increasing the risk of damage.

When it comes to the chemicals used for pressure cleaning your house, make sure to use one specifically designed for house cleaning and removal. Make sure to read the instructions on the packaging and use the chemicals accordingly.

Safety should always be your top priority when pressure washing your house.

Equipment and Supplies

You’ll need the right equipment and supplies to make sure your exterior surfaces look great. Pressure washers are the most effective way to clean walls, driveways, stone, concrete, roofs, and tiles. Make sure you have the proper pressure washer for the job, as well as a chemical cleanser with a low pH and detergent level. Always use protective gear such as goggles and gloves when handling the chemical cleaner. Additionally, you’ll need a brush attachment for the pressure washer and a ladder to reach high areas. Make sure to check the weather forecast before you begin pressure washing, as rain can dilute the cleaning agent and make it ineffective.

Types of Cleaners

When it comes to exterior cleaning, the type of cleaner you choose is just as important as the equipment you use. Depending on the material you’re cleaning, there are different types of cleaners to consider.

For instance, a wood deck or fence may require a mild detergent to remove dirt and grime, while vinyl siding may require a more powerful cleaner like a degreaser. When using cleaning products, it’s important to read the directions and safety warnings carefully to ensure the product is used safely.

For best results, it’s also recommended to use a sealing product to help protect the surface from future dirt and grime. Professional pressure washing services may also be able to provide the necessary supplies and chemicals for cleaning and sealing the exterior of your home.

Pre-Rinse Solutions

Before applying any cleaning products, pre-rinse solutions can help loosen stubborn dirt and debris for more effective cleaning. Pre-rinse solutions are ideal for outdoor surfaces such as patios, sidewalks, brick, metal, and other areas prone to staining. They help break down dirt and grime that may have been stuck to the surface for weeks or months.

Pre-rinse solutions can be used with a pressure washer or applied by hand using a scrub brush. The pre-rinse solution should be applied prior to using a detergent or other cleaning product to get the best results. By using a pre-rinse solution on these outdoor surfaces, it can help to reduce the amount of scrubbing and pressure washing required to get the job done.

Detergent Application

Once the pre-rinse solution has been applied, it’s time to apply a detergent to the surface for optimal cleaning results.

When you’re pressure washing a porch, asphalt, or shingle, it’s important to use the right detergent for the job.

A good detergent will help dissolve dirt, grease, and grime, and it won’t leave any residue on the surface.

Detergents can be applied with a brush, a sprayer, or a pressure washer, depending on the situation.

For large areas, it’s a good idea to enlist the help of a team to ensure the job is done quickly and efficiently.

Pressure Washing

Getting the job done quickly and effectively requires the right kind of pressure washing – one that’ll cut through dirt, grease, and grime without leaving any residue behind.

To get the best results, it’s important to determine the surface area of the house that needs to be pressure washed and to estimate the amount of time it’ll take to complete the job.

Using the wrong type of pressure or incorrect pressure settings can cause damage to the exterior of the house. It’s also important to use the right type of chemical detergent to ensure that it gets the job done while also protecting the surface from any potential damage.

To get the best results, a detergent specifically designed for pressure washing should be used. This will ensure that the detergent won’t leave any residue behind and will effectively remove dirt, grease, and grime without any issues.


After the pressure washing of the house is complete, it’s time to rinse off the detergent and dirt for a sparkling clean finish! To do this, you’ll need a garden hose with a sprayer nozzle attached.

Start at the top of the house and work your way down, spraying the house with a fine mist of water. This will help to remove any remaining detergent residue.

Additionally, make sure to rinse away any dirt or debris that may have been loosened during the pressure washing process. Doing this will help prevent staining and discoloration, leaving your house looking its best.


Once you’re done rinsing, it’s time for drying!

When drying your house, it’s important to use a soft cloth or a soft-bristled brush to avoid damaging the surface of your house.

If you’re using a power washer, make sure to turn it off and allow the water to evaporate naturally. If necessary, you can use a fan to speed up the drying process.

You can also use a dry-cleaning solution to help remove any stains that may have been left behind after the pressure washing. Be sure to read the instructions carefully before using the solution, as some solutions may be too strong for certain surfaces.

Mold Remediation

If the pressure washing has left your house with any mold or mildew, it’s important to take swift action to remediate the issue quickly.

The first step is to make sure you’re using the right cleaning products to kill the mold. You’ll want to use a household cleaner that contains bleach or a detergent containing ammonia. Make sure to wear protective clothing and safety glasses when using these cleaners.

Next, use a scrub brush or power washer to remove the mold from the surface. After the mold is gone, use a cleaner that contains a fungicide to prevent the mold from returning.

Finally, dry the area completely to prevent the mold from growing back.

Protective Coatings

To keep your home looking its best, consider applying a protective coating to the exterior surfaces after pressure washing. This will help prevent future mold growth and keep your house looking great!

There are a variety of coatings available to suit your needs. For example, you can use anti-fungal, mildew-resistant, waterproof, and UV-resistant coatings. All of these coatings provide protection against the elements and can be applied with a brush, roller, or sprayer.

It’s important to read the instructions on the label carefully before applying the coating. You should also make sure to wear protective gear, such as a mask and gloves when applying the coating.

Applying a protective coating will help to keep your home looking great and prevent further damage from mold and other elements.

Common Mistakes

Avoid costly mistakes by ensuring that you read the instructions on the label carefully and use the correct protective gear when applying the coating. This is especially important when pressure washing a house, as you want to make sure you’re using the right chemicals and that you don’t damage the surface.

It’s also important to double check the chemical compatibility of the coating with other materials that may come into contact with it, like wood, metal, and concrete. It’s important to use the right nozzle size and pressure when pressure washing. Too much pressure can damage the surface, while too little pressure may not be enough to remove dirt and grime.

Additionally, the distance of the nozzle from the surface should be taken into account, as too close of a distance can cause damage while too far can make the job ineffective. Following the instructions on the label and carefully considering the nozzle size, pressure, and distance will help you to avoid making costly mistakes.

Maintenance Tips

Regular maintenance is key to keeping your house looking its best. Make sure to check the coating regularly and take any necessary steps to ensure it remains in good condition.

Pressure washing is an important part of this process, as it removes dirt and debris that can build up over time and can lead to damage to the siding or other surfaces. When pressure washing, always use a cleaning solution that’s specifically designed for use with the pressure washer, as this’ll ensure that the solution’s safe for use on the surface.

Make sure to follow the manufacturer’s instructions for dilution and application, and always wear protective gear such as gloves and safety glasses when using a pressure washer. After use, be sure to flush the pressure washer and all of its accessories with fresh water to ensure that no remnants of the cleaning solution remain.


You’ve now learned what chemicals to use for pressure washing a house. With the right equipment and products, you can achieve great results in no time. Just remember to take safety measures and use the right solutions for your needs.

Avoid common mistakes and follow the instructions for each product to get the best results. With regular maintenance, your house will look clean and inviting for years to come. So don’t hesitate to give your home the pressure washing¬†it deserves!