Brick is a popular material for good reason — it elevates a home's appearance and holds up better than a lot of alternatives. But like anything, it still needs cleaning and maintenance over time, and pressure washing is usually the first method people consider.
Is It OK To Pressure Wash Brick?
Generally, yes. Pressure washing is an effective way to clean brick, but brick isn't immune to damage from high pressure — especially older brick that may already be in rougher shape. The key is using the right approach, not just blasting away at full power.
What About Power Washing?
Power washing uses heated water and steam rather than the unheated water in standard pressure washing. That added heat makes it more effective on things like oil and grease stains, and brick and masonry generally hold up well to it — it can make caked-in dirt, stubborn stains, and mold growth look almost new again.
Why Brick Still Needs Cleaning
Brick is often chosen because it's low maintenance — no paint or special treatments required. But low maintenance isn't no maintenance. Dirt, algae, mold, mildew, grease, and other buildup can still collect on brick over time, and beyond the cosmetic issue, some of that buildup can be a health hazard.
Tips For Pressure Washing Brick
1. Avoid High Pressure
Too much pressure can damage the brick itself or the mortar holding it together, potentially loosening the wall and letting water penetrate more easily. Start low — around 500 PSI — and work up from there, generally staying under 2,000 PSI. Use a wider, fan-style nozzle rather than a narrow one that concentrates force in one spot.
2. Keep The Right Distance
Even at a lower pressure setting, holding the wand too close to the surface increases the force delivered. Keeping a reasonable distance lets you dislodge dirt without overdoing it.
3. Skip Muriatic Acid
It might seem like a strong solution for stubborn dirt, but muriatic acid damages the outer surface and breaks down mortar joints, letting water in and weakening the structure over time. The same goes for ammonia and drain cleaners.
4. Skip Wire Brushes And Power Tools
For stubborn grime, use a natural or nylon-bristle brush instead. Wire brushes leave behind metal fragments that rust and stain brick over time, and power tools are too harsh, often stripping away finish unevenly.
When To Call A Professional
There's nothing wrong with cleaning brick yourself, but a professional can inspect the surface first, recommend the right approach, and typically finish the job faster with less risk of damage — plus access to equipment and products your local hardware store won't carry.