How to Pressure Wash a Brick House


Pressure washing is a powerful method for cleaning brick houses, revitalizing their appearance and ensuring longevity. However, it’s imperative to employ proper techniques and equipment to prevent harm to the brick surface. This comprehensive guide provides step-by-step instructions, essential safety measures, and expert tips for achieving optimal results when pressure washing your brick home. By following these guidelines diligently, you can restore your home’s curb appeal while safeguarding its structural integrity for years to come.

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Safety Precautions

Essential Safety Gear

Safety gear is essential before undertaking any task involving high-pressure water and debris to prevent potential injuries. Safety goggles shield the eyes from splashes and flying particles, reducing the risk of eye damage. Durable gloves and non-slip shoes provide protection and stability, enhancing overall safety during the operation.

Using the Appropriate Pressure Settings

When cleaning brick surfaces, selecting the appropriate pressure setting is crucial to prevent harm to both the mortar and the bricks themselves. Older or more delicate bricks are particularly susceptible to damage from high-pressure cleaning, which can erode mortar joints or even chip the bricks. By opting for a lower-pressure setting, you can effectively remove dirt and grime without risking structural integrity, ensuring the longevity and aesthetic appeal of the brickwork.

Avoiding Electrical Hazards

To enhance outdoor electrical safety, it’s crucial to cover all outdoor electrical sockets with weatherproof covers to prevent moisture ingress, which can lead to electrical hazards. Additionally, it’s important to avoid spraying water near electrical fixtures or wiring to minimize the risk of short circuits or electric shocks. Installing a ground fault circuit interrupter (GFCI) adds an extra layer of safety by quickly shutting off power in the event of a ground fault, protecting against electrical shocks in outdoor environments.

Preparing the Area

Preparing for a potential flood involves clearing the area around your house by removing any furniture and decorations that could be damaged by water. Additionally, ensuring that windows and doors are tightly closed helps prevent water ingress, minimizing potential damage to the interior of the house. Taking these precautions can help mitigate the impact of flooding and protect your home and belongings.

Choosing the Right Pressure Washer

Types of Pressure Washers

When it comes to cleaning brick houses, the ideal pressure washer is a medium-duty model, whether gas-powered or electric, offering versatility and power without being too excessive. The adjustable pressure settings are crucial as they allow you to tailor the force of the water to the specific needs of the bricks, ensuring effective cleaning without causing any damage. This combination of medium-duty power and adjustable settings strikes the right balance for safely and effectively cleaning brick surfaces, making the process efficient and preserving the integrity of the bricks.

Ideal PSI for Brick

Brick structures have inherent strength to withstand various pressures, but mortar, the material binding the bricks, is more vulnerable. Using a pressure washer with a moderate range, typically between 1500 to 2000 pounds per square inch (PSI), is recommended to effectively clean brick surfaces while minimizing the risk of mortar damage. This PSI range is sufficient to remove dirt and grime without exerting excessive force that could dislodge or degrade the mortar between bricks.

Preparing Your Pressure Washer

Gathering Necessary Equipment and Materials

To effectively pressure wash a brick house, it’s essential to select the appropriate pressure washer with enough power to remove dirt and grime without damaging the bricks. Additionally, using a detergent specifically formulated for brick surfaces can help loosen tough stains and ensure a thorough clean while prioritizing safety by wearing protective gear and using ladders or scaffolding for accessing higher or hard-to-reach areas, which is crucial.

Setting Up

Before you start pressure washing, make sure to connect your pressure washer securely to the water supply to prevent any potential leaks. Confirm that all connections are tight and fitted adequately before turning on the machine to ensure efficient and safe operation.

Selecting the Right Nozzle

Using a wide-angle nozzle for mortar application ensures that pressure is dispersed uniformly, reducing the risk of erosion within the mortar mix. This nozzle design helps maintain the structural integrity of the applied mortar by preventing localized high-pressure spots that could lead to uneven distribution and eventual erosion. By evenly distributing the pressure, the wide-angle nozzle promotes a more consistent and durable bond between the mortar and the substrate, enhancing the overall quality and longevity of the construction project.

Inspecting the House for Any Potential Damage

Before starting the pressure washing process, it is vital to inspect the exterior of the house for any signs of damage, such as cracked bricks or loose mortar. Addressing these issues beforehand prevents water from seeping into vulnerable areas and causing further damage.

Clearing the Surrounding Area

To prepare for high-pressure water spraying, it’s essential to clear the area of any furniture, decorations, or movable objects to prevent damage. Additionally, covering plants, lighting fixtures, and electrical outlets shields them from potential harm caused by the forceful water spray. These preventive measures help ensure a safe and effective cleaning process while preserving the integrity of surrounding elements.

Cleaning Solutions and Detergents

Choosing the Right Cleaning Solution for Brick Surfaces

When choosing a cleaner for brick surfaces, prioritize products explicitly formulated for brick to ensure optimal cleaning results. These specialized cleaners are gentle yet effective, removing dirt and grime without harming the brick’s texture or color. Steer clear of harsh chemicals, as they can potentially degrade or stain the brick, compromising its integrity and aesthetic appeal over time.

Diluting the Detergent Properly

Following the manufacturer’s instructions for diluting the detergent is crucial to achieve optimal cleaning results. Proper dilution not only ensures the effective removal of dirt and grime but also helps minimize environmental impact by using the right amount of product. By adhering to these instructions, you can maintain a clean environment while maximizing the efficiency of your cleaning efforts.

Testing the Solution on a Small Area

Before applying the cleaning solution throughout the entire house, it’s prudent to conduct a small-scale test on an inconspicuous area first. This allows you to assess any potential adverse reactions, such as discoloration or damage to the brick, without risking harm to a larger surface. Taking this precautionary step can prevent costly mistakes and ensure the safety and integrity of your home’s surfaces.

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Techniques for Pressure Washing Brick

Best Practices

To achieve streak-free cleaning, it’s crucial to start at the top and gradually work your way down, allowing gravity to assist in the process and prevent streaks from forming. Consistently maintaining both the distance and angle of your cleaning motion ensures that the cleaning solution is evenly spread across the surface, minimizing the likelihood of streaks and leaving behind a polished finish. This method not only enhances the effectiveness of the cleaning process but also results in a visibly uniform and streak-free surface.

Starting from the Top and Working Downwards

Starting at the highest point of the house and progressing downwards in segmented sections ensures that any dirty water or debris doesn’t trickle down onto already cleaned areas, maintaining a consistent level of cleanliness throughout the cleaning process. This method also allows for a more efficient workflow, as it eliminates the need to revisit previously cleaned sections due to accidental contamination from higher areas. By following this systematic approach, each part of the house receives the same level of attention and thorough cleaning, resulting in a polished and pristine finish.

Holding the Pressure Washer at the Correct Angle

Maintaining a 45-degree angle while spraying ensures optimal dirt removal by effectively lifting it away from the brick’s surface. This angle prevents the dirt from being pushed deeper into the brick, facilitating a thorough cleaning process. By adhering to this angle, you can achieve a pristine finish without risking damage to the brickwork.

Using Consistent and Overlapping Strokes

To achieve a streak-free finish, it’s essential to apply water with consistent, overlapping strokes, ensuring thorough coverage without missing any spots. Employing a systematic pattern while moving the nozzle helps to distribute the water evenly across all surfaces, preventing patchiness or uneven cleaning. By adhering to these techniques, you can ensure a professional-looking result while efficiently covering the entire area needing cleaning.

Patterns to Avoid Damage

Spraying directly into the gaps and crevices of bricks should be avoided, as it can compromise the integrity of the mortar holding them together. Instead, focus on applying the spray evenly across the surface of the bricks to ensure thorough coverage without risking damage. This approach helps maintain the structural stability of the wall while effectively cleaning or treating the surface as needed.

Dealing with Stubborn Stains

Treating Oil, Grease, and Rust Stains

To tackle stubborn stains such as oil, grease, and rust effectively, it’s advisable first to apply a specialized cleaning solution targeted at these specific types of stains. These solutions are formulated to penetrate and dissolve stubborn residues, facilitating their removal during the pressure-washing process. By pre-treating the stains with the appropriate solution, you enhance the efficiency of the pressure washing and achieve a cleaner result.

Using a Rotary Scrub Brush for Deep Cleaning

For those tough, deep-seated stains, employing a rotary scrub brush attachment alongside your pressure washer is key. This dynamic duo ensures that even the most stubborn grime is thoroughly agitated and lifted away. With the added power and motion, you’ll achieve a sparkling, clean surface that’s free from persistent stains.

Applying Additional Cleaning Solutions as Needed

For stubborn stains, it’s advisable to reapply the cleaning solution and let it sit for an extended duration to penetrate and break down the residue effectively. This extended exposure time enhances the solution’s ability to tackle the stain more comprehensively, ensuring a thorough treatment. Once the stain has been adequately treated, proceed with rinsing to remove any remaining cleaning solution and residue, leaving the surface clean and refreshed.

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Rinsing and Drying

Thoroughly Rinse the Brick Surface

Once you’ve finished cleaning, thoroughly rinse the surface with fresh water to eliminate any lingering detergent residue. This step is crucial to prevent potential surface damage or unsightly streaks caused by leftover cleaning agents. A thorough rinse ensures a pristine finish and maintains the integrity of the surface you’ve just cleaned.

Allowing the House to Dry Completely

After laying the brick, it’s crucial to let it dry thoroughly. This process may span several hours to a full day, influenced by prevailing weather conditions. Prior to proceeding with additional treatments like sealing, it’s imperative to confirm that the brick’s surface is entirely devoid of moisture. This ensures optimal adhesion and effectiveness of subsequent applications, guaranteeing the longevity and integrity of the structure.

Post-Pressure Washing Maintenance

Inspecting for Any Missed Spots or Damage

Once the house has thoroughly dried following the cleaning process, meticulously examine the surface for any overlooked areas or signs of damage that may have occurred. It is crucial to promptly attend to these issues to ensure the continued structural integrity and aesthetic appeal of the brickwork. Timely maintenance and repair efforts will help preserve the durability and overall quality of the house’s exterior.

Sealing the Brick Surface if Necessary

Applying a sealant to the brick offers a proactive defense against moisture and dirt infiltration, which is especially crucial in regions prone to harsh weather conditions. This protective layer acts as a shield, bolstering the resilience of the brickwork and extending its longevity. By safeguarding against environmental elements, the sealant helps maintain the structural integrity and aesthetic appeal of the bricks over time.

Regular Maintenance Schedule for Future Cleaning

Creating a consistent maintenance schedule is crucial to ensure that future cleanings are conducted regularly, effectively preventing the buildup of dirt and pollutants on the brickwork. By implementing such a schedule, you not only prolong the lifespan of the brickwork but also maintain the aesthetic appeal of your home, ensuring it always looks its best. Consistent upkeep not only enhances the visual appeal of your property but also contributes to its overall longevity and value.

How to Pressure Wash a Brick House

Effectively and safely cleaning your brick house hinges on employing the correct pressure, selecting the appropriate nozzle, and utilizing a compatible cleaning solution. These factors ensure that you remove dirt and grime efficiently while preserving the integrity of the brick surface. Proper technique prevents damage, allowing you to maintain the aesthetic appeal and structural integrity of your home.

Aftercare and Maintenance

Post-Washing Care

After finishing the washing process, thoroughly examine the brickwork for any indications of damage, such as cracks or erosion. If any issues are detected, promptly address them by carrying out the required repairs to maintain the structural integrity and aesthetics of the surface. Regular inspection and maintenance are crucial for preserving the longevity and appearance of the brickwork over time.

Preventative Measures

Regularly inspecting and clearing your gutters is essential to avoid water damage to your home. Additionally, applying a sealant to the bricks can act as an extra barrier against water infiltration, further protecting your property’s structure. These preventive measures can help maintain the integrity of your home and save you from costly repairs down the line.

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Professional vs. DIY Pressure Washing

When to Hire a Professional

When considering the size of your house or the condition of its brickwork, opting for professional assistance ensures safety and expertise. Large properties or older brickwork can present unique challenges that require specialized knowledge and equipment to address effectively. By entrusting the task to professionals, you mitigate the risk of accidents and ensure the job is completed with precision and care.

DIY Considerations

When you take on pressure washing as a do-it-yourself project, you not only save money but also offer a sense of accomplishment as you witness the transformation of surfaces. Equipping yourself with the appropriate tools, such as a high-quality pressure washer and safety gear like goggles and gloves, ensures efficient and safe cleaning. Following proper safety guidelines, including understanding the appropriate pressure levels for different surfaces and maintaining a safe distance from electrical outlets, guarantees a successful and satisfying experience.

Enhancing Curb Appeal

Enhancing your home’s curb appeal can be as simple as updating fixtures, giving doors a fresh coat of paint, and ensuring the landscaping is well-maintained to harmonize with your newly washed exterior. These small touches can make a significant difference in how passersby and potential buyers perceive your home. By paying attention to these details, you can elevate the overall appearance and value of your property.

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What is the best time of year to pressure wash a brick house?

The best time is during warmer months, as this allows the washed surfaces to dry completely and reduces the risk of water freezing in and damaging the mortar.

How often should I pressure wash my brick house?

It’s generally recommended to pressure wash your brick house every 1 to 2 years to prevent the buildup of grime and pollutants that can degrade the brick over time.

Can pressure washing damage bricks?

Yes, pressure washing can damage bricks if done incorrectly. Using too high of pressure or spraying too closely can erode the mortar and damage the bricks.

What should I do if I notice damage after pressure washing?

If you notice damage, it’s essential to address it quickly. Consult a professional to assess the extent of the damage and recommend repairs to prevent further deterioration.

Is it necessary to seal the brick after washing?

Sealing brick after washing is not necessary for all homes, but it can provide extra protection against moisture and dirt, especially in climates with severe weather conditions.

Are there any eco-friendly cleaning solutions recommended for pressure-washing bricks?

Yes, for an eco-friendly option, consider using a mixture of water and vinegar or a biodegradable detergent that is safe for plants and soil around your home.

What should I do to prepare my brick house for pressure washing?

Clear the area of any movable objects, cover plants and electrical outlets, and close all windows and doors to prevent water from entering the home.


Pressure washing your brick house not only enhances its curb appeal but also helps to maintain its structural integrity by removing dirt, grime, and mold buildup. By following proper techniques and using appropriate equipment, homeowners can achieve results that rival those of professional services, saving both time and money in the process. Additionally, regular pressure washing can prolong the lifespan of your brick exterior, preserving its beauty for years to come.

Remember: A clean house is a happy house!

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