Pressure washing is an excellent way to give your house a thorough cleaning and restore its shine. But before you start blasting away with your pressure washer, it’s essential to prep your home’s exterior properly. One of the crucial steps in this process is spraying your house with a cleaning solution that will help break down grime, dirt, and other stains. But what should you spray your house with before pressure washing? If you’re asking this question, you’re in the right place.
What should I Spray my House with before Pressure Washing? Before pressure washing your house, you should spray it with a mixture of water and a cleaning solution such as bleach, trisodium phosphate, or a commercial house wash. This will help loosen and remove dirt, grime, and other contaminants, making the pressure washing more effective.
In this blog, we’ll guide you through the best solutions to use and why they work.
Types of cleaners and solutions

From all-purpose cleaners to specialized solutions designed for specific surfaces, choosing the right product can make a significant difference in the outcome of your pressure washing job. Here is a closer look at the different types of cleaners and solutions that you can use to prepare your house for pressure washing.
Environmentally-friendly cleaners
In the context of pressure washing a house, using environmentally-friendly cleaners can help minimize harm to the surrounding ecosystem. These types of cleaners are formulated to be biodegradable and non-toxic, which means they won’t leave behind harmful chemicals that can damage plants, animals, or waterways.
Some examples of environmentally-friendly cleaners include vinegar, hydrogen peroxide, and citrus-based cleaners. These options are effective at removing dirt, grime, and stains from surfaces without compromising the safety of the environment.
Chemical-based cleaners
Chemical-based cleaners are one type of solution that can be used to prepare your house for pressure washing. They are typically more powerful than other types of cleaners and can help to remove stubborn stains and dirt. They can also be more dangerous to use and should be handled with care.
When choosing a chemical-based cleaner, be sure to select one that is appropriate for your specific cleaning needs and follow all safety instructions provided by the manufacturer.
DIY solutions
When it comes to pressure washing your house, there are several DIY solutions you can use to clean the surfaces effectively. One option is to use a mixture of warm water and dish soap, which can be effective for removing dirt and grime. Another option is to mix equal parts of white vinegar and water, which can help remove mildew and stains.
For tougher stains, you can try using a mixture of baking soda and water, which can help lift dirt and grime from the surface. Another option is to mix oxygen bleach with water, which can be effective for removing mold and mildew.
Choosing the right cleaner for your house

With so many different types of cleaners available on the market, it can be challenging to know which one is right for your needs. Following are some of the most common types of cleaners used for pressure washing and provide some tips to help you choose the right one for your house.
Identifying the surface material
Identifying the surface material of your house is crucial in choosing the right cleaner before pressure washing. Different materials such as wood, brick, stucco, and vinyl require specific cleaners to effectively remove dirt, grime, and stains without causing damage.
Before starting any pressure washing project, take the time to determine the surface material and research the appropriate cleaning solution to ensure the best results and protect your home from potential damage.
Assessing the level of dirt and stains
When choosing a cleaner to use before pressure washing your house, assess the level of dirt and stains present. This will help you determine the appropriate cleaner to use and ensure that you achieve the best results possible. Different types of cleaners are designed for different levels of dirt and stains, choose the right one to avoid damaging your property.
By assessing the level of dirt and stains beforehand, you can select the most effective cleaner and achieve a clean and refreshed-looking house after pressure washing.
Consideration of surrounding plants and vegetation
When choosing a cleaner to spray on your house before pressure washing, consider the surrounding plants and vegetation. Harsh chemicals can damage or even kill plants, so choose a cleaner that is plant-friendly or take necessary precautions to protect them.
You can cover the plants with plastic sheets or wet them down with water before and after pressure washing to minimize any potential harm. Read the label of the cleaner and follow the manufacturer’s instructions for use and disposal to avoid any negative environmental impact.
How to prepare your house for pressure washing

In the following paragraphs, we are discussing what you should spray your house with before pressure washing and why it’s essential for achieving a deep clean.
Clearing the area around your house
When preparing your house for pressure washing, it’s essential to clear the surrounding area. This includes removing any furniture, toys, or debris that may be in the way. It’s also crucial to cover any delicate plants or flowers to protect them from the force of the water. By clearing the area around your house, you can ensure that the pressure washing process is safe and effective.
Protecting outdoor electrical outlets
When pressure washing your house, protect your outdoor electrical outlets to avoid damage or electrical hazards. One way to do this is by covering them with waterproof covers or plastic bags secured with tape.
Turn off power to the outlets before covering them and to remove the covers once the pressure washing is complete. By taking these precautions, you can ensure that your electrical outlets stay safe while getting your house clean.
Closing windows and doors
When preparing your house for pressure washing, close all windows and doors. This will help prevent water from entering your home and causing damage to your belongings or interior.
Closing windows and doors can also help to protect your windows from being cracked or shattered by the force of the pressure washer. Taking this simple step can help ensure that your pressure washing project is successful and avoids any unnecessary damage or inconvenience.
Properly applying cleaning solutions

Properly applying cleaning solutions before pressure washing and provide some tips on how to do so effectively. By the end of this section, you’ll have a better understanding of how to prepare your house for a successful pressure washing session.
Tips for diluting and mixing cleaning solutions
When preparing cleaning solutions for pressure washing your house, follow the right dilution and mixing techniques to ensure effective cleaning and prevent damage to your property.
Some tips to keep in mind include measuring the correct amount of cleaning solution, using appropriate safety gear, starting with the lowest concentration and increasing as needed, and avoiding mixing different cleaning solutions together. Thoroughly rinse the surfaces after cleaning to remove any residue and prevent damage.
Using a garden sprayer or dedicated detergent reservoir
When pressure washing your house, there are two main ways to apply cleaning solutions: using a garden sprayer or a dedicated detergent reservoir. Using a garden sprayer allows for more control over the amount of solution applied, while a dedicated detergent reservoir is a more convenient option for larger projects.
Whichever method you choose, make sure to follow the manufacturer’s instructions and properly dilute the solution before applying it to your house.
Optimal dwell time and application methods
To achieve the best results when pressure washing your house, consider the optimal dwell time and application methods for cleaning solutions. Dwell time refers to the amount of time a cleaning solution needs to remain on the surface to effectively break down dirt and grime. The ideal dwell time will vary depending on the type and strength of the solution being used.
Apply the cleaning solution properly. For example, applying too much solution can result in wastage and may harm surrounding plants and vegetation. On the other hand, applying too little solution may not provide sufficient cleaning power. To ensure proper application, use a pump sprayer or a low-pressure sprayer and start from the bottom and work your way up to avoid streaking. Allow the solution to sit for the recommended dwell time before rinsing it off with your pressure washer.
Pressure washing techniques

Before you fire up your pressure washer, take some precautions to protect your home and the surrounding environment. One crucial step in preparing for pressure washing is choosing the right cleaning solution to use before you start spraying.
Here is a closer look at pressure washing techniques and explore some of the best solutions to use before you start pressure washing your home.
Choosing the right pressure washer
When choosing a pressure washer for your house, there are a few factors to consider. Firstly, consider the PSI (pounds per square inch) rating of the pressure washer, as this will determine the level of pressure it can deliver. Secondly, think about the GPM (gallons per minute) rating, which will determine the volume of water that the pressure washer can deliver. Consider the type of nozzle that you will be using, as different nozzles will deliver different levels of pressure and spray patterns. Ensure that you choose a pressure washer with a detergent tank or a way to apply cleaning solutions, as this will make the cleaning process more effective.
Selecting the appropriate nozzle and pressure settings
When pressure washing your house, to select the appropriate nozzle and pressure settings. The nozzle size and pressure will determine the cleaning power of the machine. A nozzle with a smaller opening will create a higher pressure and therefore a more powerful stream of water, while a larger opening will create a wider, softer spray. The pressure settings should be adjusted based on the surface being cleaned.
For example, a higher pressure setting can be used for concrete surfaces, but a lower pressure setting is recommended for more delicate surfaces such as wood. Start with a lower pressure setting and adjust as needed to avoid damage to the surface being cleaned. Always consult the manufacturer’s instructions for specific guidelines on nozzle selection and pressure settings.
Tips for effective and safe pressure washing
When it comes to pressure washing your house, there are a few tips to keep in mind to ensure that the process is effective and safe. Firstly, choose the right cleaning solution to spray your house with before pressure washing. This can include anything from a mild detergent to a specialized cleaning solution for specific surfaces such as brick or wood.
Secondly, make sure to use the appropriate pressure and nozzle for the job at hand, as too much pressure or the wrong nozzle can damage your home’s surfaces. Always wear protective gear such as goggles and gloves, and be mindful of any electrical outlets or outdoor fixtures that may be affected by the pressure washing process. By following these tips, you can achieve a clean and refreshed home exterior without causing any damage or harm.
Post-cleaning care
After pressure washing your house, it’s essential to take post-cleaning care to maintain the cleanliness and appearance of your home. While pressure washing can effectively remove dirt, grime, and stains from your home’s exterior, it can also strip away protective coatings and damage delicate surfaces if not done correctly. Following are the different types of sprays you can use for post-cleaning care and how to apply them effectively.
Rinsing your house
When pressure washing your house, rinsing it properly is an important step in post-cleaning care. This step helps to remove any remaining dirt, debris, or cleaning solution from the surface of your house. To effectively rinse your house, start at the top and work your way down, using a garden hose or pressure washer set to a low pressure setting.
Be sure to rinse all surfaces thoroughly and check for any missed spots before moving on to the next section. Also protect your plants and landscaping by covering them or watering them down before rinsing your house. Proper rinsing will leave your house looking clean and free of residue.
Inspecting for remaining dirt or stains
After pressure washing your house, inspect for any remaining dirt or stains. This can be done by carefully examining the surfaces, especially in areas that were particularly dirty or stained before washing. If any stains or dirt are found, a cleaning solution or stain remover can be applied to the area before rinsing it off with water.
Follow the manufacturer’s instructions when using cleaning solutions or stain removers and to wear appropriate protective gear. By thoroughly inspecting and treating any remaining dirt or stains, you can ensure that your house looks clean and well-maintained after pressure washing.
Drying and ventilating the area
After pressure washing your house, properly dry and ventilate the area. This will help prevent moisture buildup and potential damage to your home’s structure. To do this, make sure to thoroughly dry any surfaces that were sprayed with water and open up windows and doors to promote airflow.
Consider using a fan or dehumidifier to aid in the drying process. By taking these steps, you can ensure that your home stays in top condition after pressure washing.
Safety Precautions
Not all chemicals are created equal, and some can be harmful to you, your home, or the environment. Here are the safety precautions you should take when choosing and applying chemicals to your house before pressure washing. By following these precautions, you can ensure a safe and effective pressure washing experience that will leave your home looking its best.
Properly handling cleaning chemicals
When pressure washing a house, take proper safety precautions when handling cleaning chemicals. This includes wearing protective gear, following manufacturer instructions, and being aware of potential hazards.
Always store chemicals in a safe place, away from children and pets, and dispose of them properly. It’s also recommended to test the cleaning solution on a small, inconspicuous area before applying it to the entire house. By taking these steps, you can ensure a safe and effective cleaning process.
Using the correct pressure washer settings
When pressure washing your house, it’s crucial to use the correct pressure washer settings to avoid damaging your home’s exterior. Before beginning the task, you must assess the surface and choose the appropriate pressure washer nozzle and setting.
A fan-shaped nozzle is suitable for general cleaning, while a pinpoint nozzle is ideal for tough stains. Adjusting the pressure is essential to prevent damage to surfaces such as wood, vinyl, and stucco. Always start with a low-pressure setting and gradually increase the pressure until the desired results are achieved. Remember to exercise caution while pressure washing and wear proper safety gear.
Wearing appropriate safety gear
When pressure washing a house, wear appropriate safety gear to protect yourself from potential hazards. This gear includes eye protection, hearing protection, a respirator mask, and non-slip footwear.
Wearing these items can help prevent injuries from flying debris, loud noise, harmful chemicals, and slippery surfaces. Prioritize safety when pressure washing to avoid accidents and ensure a successful outcome.
Conclusion
To prepare your house for pressure washing, it’s recommended to spray it with a cleaning solution that can break down dirt and grime. Some effective options include a mixture of water and bleach, trisodium phosphate, or a specialized house wash solution.
In conclusion, it is essential to understand the importance of proper preparation before pressure washing your house. Taking the time to assess the surface, gather the necessary tools, and apply the appropriate cleaning solution will not only ensure that you achieve the best results but also prevent any damage to your property.
Remember to always wear protective gear and follow safety guidelines when pressure washing. In addition, it is crucial to choose the right cleaning solution based on the type of surface you are cleaning and the type of stain or debris you are removing.
By following these key takeaways, you can have a successful pressure washing experience that will leave your home looking clean and refreshed. With proper preparation, you can save time, money, and avoid any potential damage to your property. So, be sure to take the necessary steps before starting your pressure washing project, and enjoy the benefits of a cleaner, brighter home.
Frequently Asked Questions (What should I Spray my House with before Pressure Washing)
What do you spray before pressure washing?
Before pressure washing, it is important to spray a pre-treatment solution to help loosen dirt, grime, and any organic growth on the surface being cleaned. This pre-spray helps in the overall effectiveness of the pressure washing process by breaking down stubborn stains and making it easier to remove them during the actual pressure washing.
What solution to use to pressure wash a house?
When pressure washing a house, it is generally recommended to use a mild detergent solution specifically formulated for pressure washing. These solutions are designed to effectively clean various surfaces without causing damage or discoloration.
Additionally, some pressure washers have detergent tanks that allow you to mix the cleaning solution directly with the water stream.
What do you spray on siding before pressure washing?
Before pressure washing siding, it is advisable to spray a siding cleaner or a specialized detergent that is safe for the type of siding you have. This cleaner is specifically designed to remove dirt, mold, mildew, and other stains from siding surfaces.
It helps to break down the grime, making it easier to clean during the pressure washing process.
Do you use bleach to pressure wash a house?
While bleach can be effective at killing mold and mildew, it is generally not recommended to use bleach as a primary cleaning agent when pressure washing a house. Bleach can cause damage to certain surfaces, especially if not diluted properly, and it may also harm nearby plants and landscaping.
It is best to use a mild detergent solution specifically formulated for pressure washing instead.