When it comes to cleaning the exterior of your house, brick homes can present a unique challenge. Brick is a porous material that can accumulate dirt, grime, and even mold over time. This can not only make your house look dirty and uncared for, but it can also lead to potential health hazards for you and your family. One popular solution to this problem is pressure washing, but is it safe and effective for brick houses?

The answer is not straightforward. While pressure washing can certainly remove built-up dirt and grime from the surface of the bricks, it can also cause damage if not done correctly. The high pressure of the water can erode the mortar between the bricks, leading to structural issues and potential water damage inside your home. It can also cause the bricks themselves to become damaged or even dislodged.

So, should you pressure wash your brick house? It depends on a few factors. First, consider the age and condition of your bricks. If your bricks are relatively new and in good condition, pressure washing may be a viable option. However, if your bricks are older and more delicate, it’s best to avoid pressure washing altogether or at least use a lower pressure setting.

Another factor to consider is the type of grime or mold on your bricks. If the dirt and grime is superficial and can be easily removed with a gentle cleaning solution and a soft brush, it’s better to avoid pressure washing to prevent unnecessary damage to your bricks. If you’re dealing with stubborn stains or mold that won’t come off with a gentler cleaning method, then pressure washing may be a necessary step.

Pros and Cons of Pressure Washing a Brick House

Pressure washing a brick house can be a quick and effective way to clean and rejuvenate its appearance. However, before deciding to pressure wash your brick house, it’s important to consider the pros and cons to ensure you make an informed decision.


  • Efficiency: Pressure washing can remove dirt, debris, and stains from the surface of the bricks much faster than scrubbing by hand.
  • Enhanced Curb Appeal: The process can significantly improve the overall appearance of your brick house, making it look brighter and more visually appealing.
  • Preventive Maintenance: Regular pressure washing can help prevent the buildup of mold, mildew, and algae, which can cause damage to the surface of the bricks over time.
  • Increased Longevity: By removing grime and contaminants from the bricks, pressure washing can help prolong the lifespan of the materials, potentially saving you money on expensive repairs or replacements.
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  • Potential Damage: If not done correctly, pressure washing can cause damage to the bricks, especially if the pressure is too high or the nozzle is held too close to the surface. This can lead to cracks, chips, or mortar joints becoming dislodged.
  • Water Intrusion: High-pressure water can force its way into cracks, crevices, and gaps in the brickwork, potentially causing water damage or underlying structural issues.
  • Loss of Protective Coating: Some brick houses may have a protective coating or sealant applied to the surface. Pressure washing can remove this protective layer, leaving the bricks more vulnerable to staining, moisture penetration, and other damage.
  • Environmental Impact: Pressure washing uses significant amounts of water, which can be wasteful and contribute to water pollution if not properly managed. It’s essential to consider the environmental implications and use water responsibly during the process.

Before pressure washing your brick house, it’s recommended to consult with a professional who specializes in this type of cleaning. They can assess the condition of your bricks, determine the appropriate pressure and techniques to use, and help minimize the potential risks and drawbacks of the process.

Benefits of Pressure Washing

Pressure washing offers numerous benefits for cleaning a brick house. Here are some of the advantages of using this method:

  • Efficient Cleaning: Pressure washing provides a fast and effective way to remove dirt, grime, mold, and mildew from the surface of brick. The high-pressure water stream can penetrate deep into the porous surface, ensuring a thorough clean.
  • Enhanced Curb Appeal: By removing built-up dirt and stains, pressure washing can greatly improve the appearance of a brick house. This can enhance its curb appeal, making it more attractive to potential buyers or visitors.
  • Preventive Maintenance: Regular pressure washing can help prevent the growth of mold and mildew on the brick, which can cause damage over time. By keeping the surface clean, you can extend the lifespan of the brick and avoid costly repairs.
  • Health and Safety: Mold, mildew, and algae growth on brick surfaces can pose health risks, especially for those with allergies or respiratory conditions. Pressure washing removes these contaminants, creating a healthier environment for you and your family.
  • Environmentally Friendly: Pressure washing is a relatively eco-friendly cleaning method. It uses only water and does not require the use of harsh chemicals that can harm the environment or damage the brick.


Overall, pressure washing can be highly beneficial for cleaning a brick house. It offers efficient cleaning, enhances curb appeal, prevents damage, promotes health and safety, and is environmentally friendly. Consider using this method to maintain the beauty and integrity of your brick surfaces.

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Considerations Before Pressure Washing

Before you decide to pressure wash your brick house, there are several considerations you should keep in mind. While pressure washing can be an effective method for cleaning bricks, it is important to proceed with caution to avoid any potential damage.

Here are some important factors to consider:

Age of the Bricks Older bricks are generally more fragile and prone to damage. Before pressure washing, carefully assess the condition of the bricks and consult with a professional if necessary.
Mortar Condition Check the condition of the mortar between the bricks. If it is already deteriorating, pressure washing may cause further damage. Consider repairing or repointing the mortar before proceeding.
Type of Bricks Bricks can vary in their composition and surface texture. Some bricks may be more suitable for pressure washing, while others may be too soft or porous, making them vulnerable to damage. Research the specific type of bricks used in your house before deciding to pressure wash.
Water Pressure Using excessive water pressure can cause the bricks to crack, chip, or become dislodged. It is important to use the appropriate pressure setting on your pressure washer and to maintain a safe distance from the surface of the bricks.
Preparation and Protection Before pressure washing, make sure to protect nearby plants, windows, and other sensitive areas from the high-pressure water. Use plastic sheeting or drop cloths to cover them and consider applying a protective sealant to the bricks after cleaning.

It is always a good idea to consult with a professional before pressure washing your brick house, especially if you are unsure about any of these considerations. They can provide expert advice and guidance to ensure that the process is done safely and effectively.

Alternative Cleaning Methods for Brick Houses

While pressure washing can be an effective way to clean a brick house, there are also alternative methods that you can consider. These methods may be gentler on your bricks and less likely to cause damage. Here are some alternatives to pressure washing:

  • Soft Washing: Soft washing involves using a low-pressure water stream and specialized cleaning solutions to remove dirt, grime, and mold from your brick house. This method is less likely to cause damage compared to pressure washing, making it a popular choice for brick house owners.
  • Hand Scrubbing: If you prefer a more hands-on approach, you can try hand scrubbing your brick house. Use a mixture of warm water and gentle soap, and scrub the bricks with a soft-bristle brush. This method allows you to have more control over the cleaning process and ensure that you don’t apply too much force on the bricks.
  • Chemical Cleaners: There are chemical cleaners available specifically designed for brick surfaces. These cleaners can be applied to the bricks and left to sit for a certain period of time before rinsing them off. Make sure to choose a cleaner that is safe for brick and follow the instructions carefully.
  • Steam Cleaning: Steam cleaning is another option for cleaning brick houses. It uses high-temperature steam to loosen dirt and grime from the surface, which can then be wiped away. This method is more gentle on bricks compared to pressure washing, but it requires specialized equipment.
  • Professional Cleaning Services: If you’re not comfortable or don’t have the time to clean your brick house yourself, you can hire professional cleaning services. They have the expertise and equipment to safely and effectively clean your brick house without causing damage.
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Before choosing an alternative cleaning method, it’s important to assess the condition of your brick house and consider any specific cleaning requirements. Some methods may be more suitable for certain situations or types of dirt and grime. If you’re unsure, it’s always a good idea to consult with a professional or seek advice from experts in brick house cleaning.

Questions and answers,

Can I use a pressure washer to clean a brick house?

Yes, you can use a pressure washer to clean a brick house, but there are some precautions you should take.

What type of pressure washer should I use to clean a brick house?

It is recommended to use a pressure washer with a maximum pressure of 3,000 PSI or less to clean a brick house. Higher pressure can damage the bricks or mortar.

Should I use detergent when pressure washing a brick house?

Using a gentle detergent specially formulated for pressure washers can help remove dirt and grime more effectively. However, be sure to follow the manufacturer’s instructions and avoid using harsh chemicals.

How close should I hold the pressure washer wand to the brick surface?

You should hold the pressure washer wand about 6-8 inches away from the brick surface to avoid causing damage. Holding it too close can result in chipping or etching of the bricks, while holding it too far may not provide enough cleaning power.