Brick surfaces add timeless appeal to homes and commercial buildings, but keeping them clean requires care to avoid damage. This guide outlines practical, safe methods for removing dirt, algae, and efflorescence from brick using commonly available tools. Readers will find step-by-step instructions, safety tips, and troubleshooting to ensure durable, attractive brickwork.
Quick Answer
For most dirt and mildew on brick, start with a gentle cleaning method using a masonry brush and a mild cleaning solution. If more stubborn stains persist, consider a pressure washer with proper settings and a brick cleaning kit. Always test a small area first and protect nearby plants. Avoid using high-pressure on soft bricks or old mortar to prevent damage.
What You’ll Need
The following tools and materials cover typical brick cleaning needs. Gather these before you begin to streamline the process.
- Pressure washer 2000 psi brick cleaning kit — for tough grime and efflorescence
- Masonry brush long handle brick cleaning — for scrubbing without bending
- Rotary surface cleaner for brick and pavement — for even cleaning on flat surfaces
- Brick cleaning scraper tool — for stubborn deposits and mortar haze
- Drill brush attachment masonry brick cleaning — for detailed nooks and mortar lines
Before You Start
Assess the brick type and existing mortar, as some bricks are more porous or fragile. Wear protective eyewear and gloves, and keep children and pets away from the work area. Protect nearby plants with plastic sheeting or drop cloths, and cover vegetation at least 6 feet away. Plan to work in shaded or cool conditions to prevent cleaners from drying too quickly. Never use highly acidic cleaners on brick without professional guidance as they can erode mortar and surface finish. Time estimate: 2–6 hours depending on area and stain severity.
Step-By-Step: How To Clean Brick
- Prepare the area by removing loose debris with a brush or broom and sealing all nearby electrical outlets or fixtures.
- Mix a mild cleaning solution according to product instructions, starting with warm water and a soft detergent suitable for brick.
- Test a small, inconspicuous area to check for adverse reactions to the cleaner or water exposure.
- Use a masonry brush long handle brick cleaning to scrub the surface in a consistent, circular motion, paying attention to mortar joints.
- For stubborn stains, apply a brick cleaning scraper tool or use a drill brush attachment masonry brick cleaning to sponge, scrub, and lift deposits without damaging the brick.
- Rinse with a low-pressure spray to remove loosened material, avoiding high-pressure jets that can erode mortar.
- If efflorescence remains, re-apply a cleaning agent designed for mineral deposits and scrub again before a final rinse.
- For larger flat areas, switch to a rotary surface cleaner for brick and pavement to achieve even cleaning and reduce streaks.
- Let the brick dry completely, then inspect the surface for missed spots and repeat as needed on a dry, cool day.
- Seal porous brick after thorough drying if you plan to reduce future staining, applying a breathable masonry sealer as directed.
- Maintain regular cleaning using mild cleaners and periodic scrubbing to prevent heavy buildup.
Troubleshooting
| Symptom | Likely Cause | Fix | Prevention |
|---|---|---|---|
| Streaks after rinsing | Uneven cleaning, residual cleaner | Re-rinse areas with even sweep, avoid direct sunlight | Use uniform brushing pattern |
| Bricks feel rough after cleaning | Mortar damage or mineral deposits | Use gentler tools and test area first | Limit pressure and duration on joints |
| Stains reappear quickly | Porous brick absorbing moisture | Consider breathable sealing and timely maintenance | Perform cleaning during dry weather |
| Discolored mortar | Acid cleaners on mortar | Stop using acidic products; switch to milder cleaners | Follow manufacturer guidelines for mortar care |
Common Mistakes
- Using high-pressure water on old or soft brick can crack bricks or loosen mortar.
- Using harsh chemicals without testing a small area first may cause discoloration or damage.
- Ignoring safety—always wear eye protection and gloves and keep pets away during cleaning.
- Rushing the rinse stage can leave deposits that resettle on the brick surface.
Tips For Best Results
- Work in the shade or on overcast days to prevent cleaners from drying too quickly.
- Keep the spray nozzle at a safe distance to avoid mortar damage while cleaning.)
- Use a long-handled brush to minimize bending and improve leverage on vertical surfaces.
- Test cleaners on a hidden area to ensure colorfastness before full application.
- Document the cleaning process with photos to monitor progress and plan maintenance.
Call A Professional
Seek professional help if brick shows significant deterioration, if you are unsure about the mortar condition, or if efflorescence recurs after cleaning. Stop work and consult a mason or cleaning specialist if you notice cracking, loose bricks, or contaminated moisture behind the wall. For historic or decorative brickwork, professional assessment may help preserve value and integrity of the surface.
FAQ
Can I clean brick using a regular household cleaner?
Yes, but choose a mild cleaner designed for masonry and test first to avoid damage.
Is a pressure washer safe for brick?
It can be, with low to medium pressure and a wide spray pattern to protect mortar joints.
How often should brick be cleaned?
Depends on environment, but every 1–3 years is common for outdoor brick facing.
Should I seal brick after cleaning?
Breathable masonry sealers can help prevent stains, but wait until the brick is completely dry.
What causes efflorescence on brick?
Mineral deposits emerge when water moves through brick masonry, leaving salts on the surface after evaporation.
Can I use bleach on brick?
Bleach can discolor and weaken some bricks; use it only when recommended by product guidelines and tested first.
Buying Guide
When choosing equipment for brick cleaning, consider size, power, and surface area. For small, tight spaces, a handheld or lightweight setup may suffice, while larger brick facades benefit from a 2000 psi cleaning kit and a rotary surface cleaner to maintain even coverage. Noise level and energy efficiency matter for residential use, as do control options like adjustable pressure and spray patterns. Placement is also important; ensure access to outlets and sheltered storage for cleaning solutions. Compare kits for compatibility with masonry brushes and drill attachments to tailor the setup to brick tasks.
Key buying factors to review include:
- Size and portability for the cleaning area (walls, steps, arches)
- Pressure range suitable for brick while protecting mortar
- Surface cleaners for large flat surfaces to prevent streaks
- Brushes and attachments like drill brushes and long-handle tools
- Chemical compatibility with mild masonry cleaners and efflorescence removers
- Ease of maintenance and availability of replacement parts
Ask yourself: Do you mainly clean exterior walls, walkways, or decorative brickwork? How much time do you plan to invest in maintenance? A well-chosen setup balances power with care to extend the life and look of brick surfaces.