Power washing is an efficient and popular method for removing built-up dirt, grime, mold, and algae from home exteriors. But when it comes to brick houses, homeowners often ask: can you power wash brick house surfaces safely?
The answer is yes—but with significant caveats. This blog will guide you through the essential considerations, best practices, and why hiring a professional is usually the best route.
What You’ll Learn in This Guide
- Understanding Brick: Material Matters
- Is Power Washing Brick Safe?
- Common DIY Mistakes to Avoid
- Why Professional Power Washing Makes a Difference
- Key Takeaways for Homeowners
Understanding Brick: Material Matters
Brick has long been valued for its strength, natural aesthetic, and low maintenance. However, despite its rugged appearance, brick is a surprisingly delicate material in certain contexts—particularly when it comes to cleaning. Its porous nature means it readily absorbs water, and if moisture becomes trapped inside the brick or mortar, it can lead to a range of issues such as efflorescence, cracking, or even internal mold growth.
The structural integrity of brick is closely tied to the condition of the mortar joints. Over time, weathering can weaken mortar, making it more susceptible to erosion—especially when subjected to the high pressures of power washing. Unlike smooth, non-porous materials like vinyl or aluminum siding, brick surfaces cannot simply be blasted clean without risking irreversible damage.
Adding to the complexity is the variety of brick types used in construction. Some bricks are soft-fired, which makes them more vulnerable to surface wear, while others are hard-fired and more resistant. Additionally, many brick homes have coatings or sealants that affect how the brick should be cleaned. Older bricks, especially in historic homes, may not have any modern sealing, making them even more sensitive.
Understanding the specific composition and condition of your brickwork is essential before attempting any cleaning method. For example, a newer home with sealed, high-density brick can typically handle low-pressure washing more effectively than an older home with worn, untreated surfaces.
Can You Power Wash a Brick House Without Damaging It?
Yes, you can power wash a brick house without damaging it—but only if it’s done with care and expertise. While brick is durable, it’s not impervious to damage, especially when subjected to high-pressure water. Improper techniques can lead to a host of problems, including:
- Erosion of mortar joints, which weakens the structure and can lead to expensive repairs.
- Chipping or flaking of the brick surface, especially in older or softer bricks.
- Water infiltration behind the brick façade, which can cause hidden mold growth, wood rot, or even damage to insulation and framing.
Professional cleaning teams are trained to recognize these risks and use methods that minimize them. One such method is soft washing, which combines gentle water pressure with biodegradable cleaning solutions. This approach effectively removes dirt, algae, and stains without subjecting the masonry to unnecessary stress.
To safely power wash a brick house, you should:
- Inspect the exterior carefully
Look for cracks in the brick or crumbling mortar. Any structural weakness should be repaired before washing begins to prevent water from entering behind the walls. - Use the lowest pressure setting possible
More pressure doesn’t mean a better clean—especially with brick. Start low and only increase pressure slightly if necessary. Most pros use specific nozzles designed to disperse water in a fan spray rather than a concentrated stream. - Apply appropriate cleaning solutions
Choose detergents that are safe for masonry. These help break down organic matter and grime so that minimal pressure is needed for rinsing. - Rinse gently and thoroughly
After the detergent has done its job, a light rinse is all that’s needed. It’s essential to remove all residue to avoid streaking or damage from leftover chemicals.
Ultimately, while it is possible to clean brick with power washing equipment, it requires a level of caution and experience that many DIYers may not possess. That’s why many homeowners choose to rely on professionals who understand how to tailor their approach based on the condition and type of brickwork.
Common DIY Mistakes to Avoid
One of the biggest risks of DIY power washing brick is using too much pressure. Many homeowners assume more force equals more cleanliness, but that’s a recipe for long-term damage to both brick and mortar.
Other common errors include:
- Using the wrong nozzle: Narrow tips concentrate pressure and can gouge the brick surface, leading to pitting and erosion.
- Skipping pre-treatment: Without the right cleaners, stains and biological growth like algae, mildew, or lichen may not be fully removed—and could return more quickly.
- Washing in cold weather: Moisture can freeze inside the brick, causing it to crack, flake, or spall, especially in freeze-thaw climates like Michigan.
- Ignoring safety protocols: Power washers are powerful machines that can cause injury if mishandled. Eye protection, secure footing, and correct hose handling are essential.
- Neglecting to protect nearby areas: DIYers often forget to shield landscaping, light fixtures, windows, and electrical outlets from overspray or cleaning chemicals, which can lead to damage or safety hazards.
- Failing to rinse properly: Leftover detergent can stain the brick or attract more dirt if not thoroughly rinsed.
Instead of risking costly repairs or incomplete results, it’s often smarter to leave the job to professionals—especially if you’re unsure about the right pressure settings, equipment, or detergents.
Why Professional Power Washing Makes a Difference
Hiring professionals for house power washing ensures that your home receives the care it needs without the hazards of a DIY approach. Experts are trained to assess the condition of your brickwork, choose the right cleaning agents, and apply safe levels of pressure.
At Absolutely Clean Services, we’ve been offering power washing services in Grand Rapids since 1999. Our team is experienced in cleaning both residential and commercial properties, using eco-friendly methods tailored to each surface type. When it comes to power washing brick, we always err on the side of caution to preserve your home’s integrity.
Professionals also handle post-washing inspections and can recommend whether your brick needs resealing—an important step in prolonging its lifespan and appearance.
Factors That Influence the Cost of Power Washing
The cost of power washing a brick house can vary based on several key factors. The size of the home, the type and condition of the brick, the presence of stubborn stains or biological growth (like algae or moss), and the accessibility of the surfaces all influence the final quote. Homes with fragile or historic brickwork may also require gentler techniques, which can affect both the time and equipment needed.
Instead of offering general estimates that might not reflect your specific situation, it’s best to consult directly with a local professional who can assess your home and provide a personalized quote. If you’re in or around Grand Rapids, Michigan, we at Absolutely Clean Services would be happy to take a look at your property and recommend the safest, most effective way to clean your brick exterior.
Key Takeaways for Homeowners
So, can you power wash brick house exteriors without damaging them? Yes, but only when done carefully and correctly. If you’re set on doing it yourself, thorough research, low pressure, and the right products are non-negotiable. Still, hiring experienced professionals like Absolutely Clean Services can save you time, avoid costly repairs, and ensure your home looks its best.
Brick homes are beautiful and built to last, but only if maintained properly. Whether you’re dealing with seasonal grime or years of build-up, power washing brick is a task best handled with knowledge and caution—or better yet, by pros who specialize in house power washing.