How to Paint Brick Siding — DIY Steps + Stop Points

Painting brick siding changes the look and can protect the surface when done correctly. It’s important to understand what you’re trying to achieve and the limitations of brick as a substrate. This intro lays out when painting makes sense and when alternatives should be considered.

Consider brick porosity, existing coatings, and exposure to the elements. Use manufacturer data sheets, product labels, or local code guidance to confirm suitability. If you’re unsure, plan a small test area and consult a pro for a second opinion before committing to a full project.

When to paint vs when to repair or replace

Painting brick siding can enhance its appearance, but it’s not always the best solution. Inspect your bricks for signs of damage before you grab a paintbrush.

If bricks are cracked, loose, or show signs of water damage, they need repair or replacement, not painting. Painting over these issues won’t fix them and could make them worse.

However, if your bricks are sound but faded or you want a color change, painting is a viable option. Just remember, painting doesn’t protect bricks from moisture like sealants do.

Timing and environmental readiness

The time of year matters when painting brick siding. Don’t just pick a weekend; choose the right conditions for best results.

Check your paint’s label. Most paints need temperatures between 50-90°F (10-32°C) to cure properly. This range can vary, so always follow the manufacturer’s guidance.

Avoid painting in direct sunlight or when humidity is high. These conditions can cause poor adhesion and uneven drying. Opt for cool, dry days instead.

Also, avoid painting during rainy seasons. Water can’t penetrate painted surfaces as easily, leading to moisture buildup behind the paint.

Back to top ↑

Keep a practical list of tools that match brick porosity and surface condition. Include safety gear like eye and respiratory protection, along with brushes, rollers, or a sprayer for the job at hand. Think through the workflow you’ll use based on the brick’s texture and previous coatings.

Choose items with durability and cleanability in mind, and know when to rent larger equipment for efficiency. Always verify product data sheets or labels for compatibility with masonry surfaces and breathable finishes. If any specification is unclear, check the manufacturer instructions or local rules before purchasing.

Back to top ↑

Start with a methodical inspection to identify loose mortar, cracked bricks, and signs of previous coatings. Document issues so you can prioritize repairs before painting. This step helps prevent adhesion problems later on.

Create a repair plan that marks stop points where repairs must be completed first. Use labels like mortar stabilizing, brick replacement, or coating removal as you go. When in doubt, verify repair requirements with manufacturer guidance or local masonry standards before proceeding.

Identifying and treating efflorescence and biological growth

Efflorescence is that white, powdery stuff you see on bricks. It’s salt deposits from moisture in the walls. Mildew and algae are those green or black spots. They’re biological growths that love damp surfaces.

First things first: Don’t try to scrub them off with harsh chemicals. That could damage your bricks. Instead, use a soft brush and a solution of water and a mild detergent. Test it on a small area first.

For efflorescence, you might need a specialized cleaner. Again, test it first. If growth is heavy, consider using a fungicide or algaecide. Always follow the manufacturer’s instructions.

Mortar, cracked bricks, and structural concerns

Check your mortar joints. If they’re crumbling or missing, you’ll need to repoint them. That’s just mason’s talk for filling those gaps with new mortar.

Now, cracked bricks: Hairline cracks are usually okay. But if they’re wide or the brick feels loose, replace it. It’s a simple job, but do it right to avoid water getting in.

But here’s where you must stop and think: If there are lots of cracks, or bricks are missing, or walls are leaning, that’s not just a paint job anymore. That’s structural. Get a pro out to look at it. Safety first, and warranties matter too.

Back to top ↑

Detail safe cleaning methods that suit the brick and soil load. Decide between light hand-scrubbing or controlled pressure washing based on porosity and contaminant level. Protect adjacent plants and surfaces from overspray during cleaning.

Rinse practices matter for leaving a clean, receptive surface. Check detergents and rinse cycles on product labels or manufacturer instructions to avoid residue that could affect adhesion. If unsure, consult the product data sheet or local guidance for masonry cleaning.

Pressure Washing Best Practices and Alternatives

Pressure washing is a quick way to clean brick siding, but it must be done right. Start by checking your pressure washer’s manual for the correct nozzle tip and PSI setting.

Never exceed 1200 PSI. Too much pressure can damage mortar joints or even dislodge bricks. Always test on a small, hidden area first to ensure you’re not causing harm.

For fragile mortar or older brickwork, consider using a stiff-bristle brush and a garden hose with an adjustable nozzle instead. It’s slower but safer.

Masking, Protecting Trim, and Creating Work Zones

Before you start cleaning, protect your windows, doors, and trim with painter’s tape and plastic sheeting. This will keep them clean and prevent paint from seeping into unwanted areas.

Lay down drop cloths or plastic sheets on the ground to catch any runoff. This protects your landscaping and walkways, and makes cleanup easier.

Control water flow. Use a hose with an adjustable nozzle to direct water away from plants and other sensitive areas. You can also use sandbags or weighted boards to create barriers and contain runoff.

Back to top ↑

Outline a clear sequence for priming and applying the first coat, including any surface wetting steps. Select primers and binders based on brick porosity and existing coatings, and align your method with the product’s recommended application. Plan adhesion checks at practical stop points.

Discuss real-world workflow options like brush, roller, or spray, and how each interacts with texture. Always verify that the primer is compatible with the topcoat and masonry substrate per the label or manufacturer instructions. If in doubt, check with the supplier or local code guidance before proceeding.

Application techniques for mortar joints and textured brick

Start by tackling the mortar joints. Use a stiff-bristled, angled brush to work the primer into these crevices. This ensures even coverage and helps prevent paint from peeling later on.

For flat areas of the bricks, use a roller with a medium nap cover. This allows for quick, even application while still allowing the primer to penetrate the brick’s surface.

Pro tip: After applying the primer or paint, use a back-brushing technique to ensure complete coverage and penetration into any remaining crevices or textured areas.

Stop point: adhesion and absorption testi